--- _id: '11100' abstract: - lang: eng text: Eukaryotic cell function depends on the physical separation of nucleoplasmic and cytoplasmic components by the nuclear envelope (NE). Molecular communication between the two compartments involves active, signal-mediated trafficking, a function that is exclusively performed by nuclear pore complexes (NPCs). The individual NPC components and the mechanisms that are involved in nuclear trafficking are well documented and have become textbook knowledge. However, in addition to their roles as nuclear gatekeepers, NPC components-nucleoporins-have been shown to have critical roles in chromatin organization and gene regulation. These findings have sparked new enthusiasm to study the roles of this multiprotein complex in nuclear organization and explore novel functions that in some cases appear to go beyond a role in transport. Here, we discuss our present view of NPC biogenesis, which is tightly linked to proper cell cycle progression and cell differentiation. In addition, we summarize new data suggesting that NPCs represent dynamic hubs for the integration of gene regulation and nuclear transport processes. article_processing_charge: No article_type: original author: - first_name: M. full_name: Capelson, M. last_name: Capelson - first_name: C. full_name: Doucet, C. last_name: Doucet - first_name: Martin W full_name: HETZER, Martin W id: 86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed last_name: HETZER orcid: 0000-0002-2111-992X citation: ama: 'Capelson M, Doucet C, Hetzer M. Nuclear pore complexes: Guardians of the nuclear genome. Cold Spring Harbor Symposia on Quantitative Biology. 2011;75:585-597. doi:10.1101/sqb.2010.75.059' apa: 'Capelson, M., Doucet, C., & Hetzer, M. (2011). Nuclear pore complexes: Guardians of the nuclear genome. Cold Spring Harbor Symposia on Quantitative Biology. Cold Spring Harbor Laboratory Press. https://doi.org/10.1101/sqb.2010.75.059' chicago: 'Capelson, M., C. Doucet, and Martin Hetzer. “Nuclear Pore Complexes: Guardians of the Nuclear Genome.” Cold Spring Harbor Symposia on Quantitative Biology. Cold Spring Harbor Laboratory Press, 2011. https://doi.org/10.1101/sqb.2010.75.059.' ieee: 'M. Capelson, C. Doucet, and M. Hetzer, “Nuclear pore complexes: Guardians of the nuclear genome,” Cold Spring Harbor Symposia on Quantitative Biology, vol. 75. Cold Spring Harbor Laboratory Press, pp. 585–597, 2011.' ista: 'Capelson M, Doucet C, Hetzer M. 2011. Nuclear pore complexes: Guardians of the nuclear genome. Cold Spring Harbor Symposia on Quantitative Biology. 75, 585–597.' mla: 'Capelson, M., et al. “Nuclear Pore Complexes: Guardians of the Nuclear Genome.” Cold Spring Harbor Symposia on Quantitative Biology, vol. 75, Cold Spring Harbor Laboratory Press, 2011, pp. 585–97, doi:10.1101/sqb.2010.75.059.' short: M. Capelson, C. Doucet, M. Hetzer, Cold Spring Harbor Symposia on Quantitative Biology 75 (2011) 585–597. date_created: 2022-04-07T07:53:18Z date_published: 2011-04-18T00:00:00Z date_updated: 2022-07-18T08:54:23Z day: '18' doi: 10.1101/sqb.2010.75.059 extern: '1' external_id: pmid: - '21502404' intvolume: ' 75' keyword: - Genetics - Molecular Biology - Biochemistry language: - iso: eng month: '04' oa_version: None page: 585-597 pmid: 1 publication: Cold Spring Harbor Symposia on Quantitative Biology publication_identifier: isbn: - '9781936113071' issn: - 0091-7451 - 1943-4456 publication_status: published publisher: Cold Spring Harbor Laboratory Press quality_controlled: '1' scopus_import: '1' status: public title: 'Nuclear pore complexes: Guardians of the nuclear genome' type: journal_article user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd volume: 75 year: '2011' ... --- _id: '112' abstract: - lang: eng text: Particle beams are important tools for probing atomic and molecular interactions. Here we demonstrate that particle beams also offer a unique opportunity to investigate interactions in macroscopic systems, such as granular media. Motivated by recent experiments on streams of grains that exhibit liquid-like breakup into droplets, we use molecular dynamics simulations to investigate the evolution of a dense stream of macroscopic spheres accelerating out of an opening at the bottom of a reservoir. We show how nanoscale details associated with energy dissipation during collisions modify the stream\'s macroscopic behavior. We find that inelastic collisions collimate the stream, while the presence of short-range attractive interactions drives structure formation. Parameterizing the collision dynamics by the coefficient of restitution (i.e., the ratio of relative velocities before and after impact) and the strength of the cohesive interaction, we map out a spectrum of behaviors that ranges from gaslike jets in which all grains drift apart to liquid-like streams that break into large droplets containing hundreds of grains. We also find a new, intermediate regime in which small aggregates form by capture from the gas phase, similar to what can be observed in molecular beams. Our results show that nearly all aspects of stream behavior are closely related to the velocity gradient associated with vertical free fall. Led by this observation, we propose a simple energy balance model to explain the droplet formation process. The qualitative as well as many quantitative features of the simulations and the model compare well with available experimental data and provide a first quantitative measure of the role of attractions in freely cooling granular streams. acknowledgement: This work was supported by the NSF through CBET-0933242. We acknowledge use of shared facilities provided by the Keck Facility for Ultrafast Imaging at the University of Chicago and by the Chicago MRSEC through NSF DMR-0820054. Software support by Itasca Consulting Group, Inc., under the Itasca Educational Partnership is gratefully acknowledged. H.G. thanks the German-American Fulbright Commission for fellowship support during his stay at the University of Chicago. article_number: '051302' author: - first_name: Scott R full_name: Waitukaitis, Scott R id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87 last_name: Waitukaitis orcid: 0000-0002-2299-3176 - first_name: Helge full_name: Grütjen, Helge last_name: Grütjen - first_name: John full_name: Royer, John last_name: Royer - first_name: Heinrich full_name: Jaeger, Heinrich last_name: Jaeger citation: ama: Waitukaitis SR, Grütjen H, Royer J, Jaeger H. Droplet and cluster formation in freely falling granular streams. Physical Review E. 2011;83(5). doi:10.1103/PhysRevE.83.051302 apa: Waitukaitis, S. R., Grütjen, H., Royer, J., & Jaeger, H. (2011). Droplet and cluster formation in freely falling granular streams. Physical Review E. American Physical Society. https://doi.org/10.1103/PhysRevE.83.051302 chicago: Waitukaitis, Scott R, Helge Grütjen, John Royer, and Heinrich Jaeger. “Droplet and Cluster Formation in Freely Falling Granular Streams.” Physical Review E. American Physical Society, 2011. https://doi.org/10.1103/PhysRevE.83.051302. ieee: S. R. Waitukaitis, H. Grütjen, J. Royer, and H. Jaeger, “Droplet and cluster formation in freely falling granular streams,” Physical Review E, vol. 83, no. 5. American Physical Society, 2011. ista: Waitukaitis SR, Grütjen H, Royer J, Jaeger H. 2011. Droplet and cluster formation in freely falling granular streams. Physical Review E. 83(5), 051302. mla: Waitukaitis, Scott R., et al. “Droplet and Cluster Formation in Freely Falling Granular Streams.” Physical Review E, vol. 83, no. 5, 051302, American Physical Society, 2011, doi:10.1103/PhysRevE.83.051302. short: S.R. Waitukaitis, H. Grütjen, J. Royer, H. Jaeger, Physical Review E 83 (2011). date_created: 2018-12-11T11:44:41Z date_published: 2011-05-12T00:00:00Z date_updated: 2021-01-12T06:48:25Z day: '12' doi: 10.1103/PhysRevE.83.051302 extern: '1' external_id: arxiv: - '1006.1371' intvolume: ' 83' issue: '5' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1006.1371 month: '05' oa: 1 oa_version: Preprint publication: Physical Review E publication_status: published publisher: American Physical Society publist_id: '7942' quality_controlled: '1' status: public title: Droplet and cluster formation in freely falling granular streams type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 83 year: '2011' ... --- _id: '11673' abstract: - lang: eng text: Given only the URL of a Web page, can we identify its topic? We study this problem in detail by exploring a large number of different feature sets and algorithms on several datasets. We also show that the inherent overlap between topics and the sparsity of the information in URLs makes this a very challenging problem. Web page classification without a page’s content is desirable when the content is not available at all, when a classification is needed before obtaining the content, or when classification speed is of utmost importance. For our experiments we used five different corpora comprising a total of about 3 million (URL, classification) pairs. We evaluated several techniques for feature generation and classification algorithms. The individual binary classifiers were then combined via boosting into metabinary classifiers. We achieve typical F-measure values between 80 and 85, and a typical precision of around 86. The precision can be pushed further over 90 while maintaining a typical level of recall between 30 and 40. article_number: '15' article_processing_charge: No article_type: original author: - first_name: Eda full_name: Baykan, Eda last_name: Baykan - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Ludmila full_name: Marian, Ludmila last_name: Marian - first_name: Ingmar full_name: Weber, Ingmar last_name: Weber citation: ama: Baykan E, Henzinger MH, Marian L, Weber I. A comprehensive study of features and algorithms for URL-based topic classification. ACM Transactions on the Web. 2011;5(3). doi:10.1145/1993053.1993057 apa: Baykan, E., Henzinger, M. H., Marian, L., & Weber, I. (2011). A comprehensive study of features and algorithms for URL-based topic classification. ACM Transactions on the Web. Association for Computing Machinery. https://doi.org/10.1145/1993053.1993057 chicago: Baykan, Eda, Monika H Henzinger, Ludmila Marian, and Ingmar Weber. “A Comprehensive Study of Features and Algorithms for URL-Based Topic Classification.” ACM Transactions on the Web. Association for Computing Machinery, 2011. https://doi.org/10.1145/1993053.1993057. ieee: E. Baykan, M. H. Henzinger, L. Marian, and I. Weber, “A comprehensive study of features and algorithms for URL-based topic classification,” ACM Transactions on the Web, vol. 5, no. 3. Association for Computing Machinery, 2011. ista: Baykan E, Henzinger MH, Marian L, Weber I. 2011. A comprehensive study of features and algorithms for URL-based topic classification. ACM Transactions on the Web. 5(3), 15. mla: Baykan, Eda, et al. “A Comprehensive Study of Features and Algorithms for URL-Based Topic Classification.” ACM Transactions on the Web, vol. 5, no. 3, 15, Association for Computing Machinery, 2011, doi:10.1145/1993053.1993057. short: E. Baykan, M.H. Henzinger, L. Marian, I. Weber, ACM Transactions on the Web 5 (2011). date_created: 2022-07-27T13:48:11Z date_published: 2011-07-01T00:00:00Z date_updated: 2022-09-12T08:46:56Z day: '01' doi: 10.1145/1993053.1993057 extern: '1' intvolume: ' 5' issue: '3' keyword: - Topic classification - URL - ODP language: - iso: eng month: '07' oa_version: None publication: ACM Transactions on the Web publication_identifier: eissn: - 1559-114X issn: - 1559-1131 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' scopus_import: '1' status: public title: A comprehensive study of features and algorithms for URL-based topic classification type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 5 year: '2011' ... --- _id: '11760' abstract: - lang: eng text: "We study a novel load balancing problem that arises in web search engines. The problem is a combination of an offline assignment problem, where files need to be (copied and) assigned to machines, and an online load balancing problem, where requests ask for specific files and need to be assigned to a corresponding machine, whose load is increased\r\nby this. We present simple deterministic algorithms for this problem and exhibit an interesting trade-off between the available space to make file copies and the obtainable makespan. We also give non-trivial lower bounds for a large class of deterministic algorithms and present a randomized algorithm that beats these bounds with high probability." article_processing_charge: No article_type: original author: - first_name: Paul full_name: Dütting, Paul last_name: Dütting - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Ingmar full_name: Weber, Ingmar last_name: Weber citation: ama: Dütting P, Henzinger MH, Weber I. Offline file assignments for online load balancing. Information Processing Letters. 2011;111(4):178-183. doi:10.1016/j.ipl.2010.11.022 apa: Dütting, P., Henzinger, M. H., & Weber, I. (2011). Offline file assignments for online load balancing. Information Processing Letters. Elsevier. https://doi.org/10.1016/j.ipl.2010.11.022 chicago: Dütting, Paul, Monika H Henzinger, and Ingmar Weber. “Offline File Assignments for Online Load Balancing.” Information Processing Letters. Elsevier, 2011. https://doi.org/10.1016/j.ipl.2010.11.022. ieee: P. Dütting, M. H. Henzinger, and I. Weber, “Offline file assignments for online load balancing,” Information Processing Letters, vol. 111, no. 4. Elsevier, pp. 178–183, 2011. ista: Dütting P, Henzinger MH, Weber I. 2011. Offline file assignments for online load balancing. Information Processing Letters. 111(4), 178–183. mla: Dütting, Paul, et al. “Offline File Assignments for Online Load Balancing.” Information Processing Letters, vol. 111, no. 4, Elsevier, 2011, pp. 178–83, doi:10.1016/j.ipl.2010.11.022. short: P. Dütting, M.H. Henzinger, I. Weber, Information Processing Letters 111 (2011) 178–183. date_created: 2022-08-08T11:33:03Z date_published: 2011-01-15T00:00:00Z date_updated: 2022-09-12T09:38:05Z day: '15' doi: 10.1016/j.ipl.2010.11.022 extern: '1' intvolume: ' 111' issue: '4' language: - iso: eng month: '01' oa_version: None page: 178-183 publication: Information Processing Letters publication_identifier: issn: - 0020-0190 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Offline file assignments for online load balancing type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 111 year: '2011' ... --- _id: '11796' abstract: - lang: eng text: "The design of truthful auctions that approximate the optimal expected revenue is a central problem in algorithmic mechanism design. 30 years after Myerson’s characterization of Bayesian optimal auctions in single-parameter domains [8], characterizing but also providing efficient mechanisms for multi-parameter domains still remains a very important unsolved problem. Our work improves upon recent results in this area, introducing new techniques for tackling the problem, while also combining and extending recently introduced tools.\r\n\r\nIn particular we give the first approximation algorithms for Bayesian auctions with multiple heterogeneous items when bidders have additive valuations, budget constraints and general matroid feasibility constraints." alternative_title: - LNCS article_processing_charge: No author: - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Angelina full_name: Vidali, Angelina last_name: Vidali citation: ama: 'Henzinger MH, Vidali A. Multi-parameter mechanism design under budget and matroid constraints. In: 19th Annual European Symposium on Algorithms. Vol 6942. Springer Nature; 2011:192–202. doi:10.1007/978-3-642-23719-5_17' apa: 'Henzinger, M. H., & Vidali, A. (2011). Multi-parameter mechanism design under budget and matroid constraints. In 19th Annual European Symposium on Algorithms (Vol. 6942, pp. 192–202). Saarbrücken, Germany: Springer Nature. https://doi.org/10.1007/978-3-642-23719-5_17' chicago: Henzinger, Monika H, and Angelina Vidali. “Multi-Parameter Mechanism Design under Budget and Matroid Constraints.” In 19th Annual European Symposium on Algorithms, 6942:192–202. Springer Nature, 2011. https://doi.org/10.1007/978-3-642-23719-5_17. ieee: M. H. Henzinger and A. Vidali, “Multi-parameter mechanism design under budget and matroid constraints,” in 19th Annual European Symposium on Algorithms, Saarbrücken, Germany, 2011, vol. 6942, pp. 192–202. ista: 'Henzinger MH, Vidali A. 2011. Multi-parameter mechanism design under budget and matroid constraints. 19th Annual European Symposium on Algorithms. ESA: European Symposium on Algorithms, LNCS, vol. 6942, 192–202.' mla: Henzinger, Monika H., and Angelina Vidali. “Multi-Parameter Mechanism Design under Budget and Matroid Constraints.” 19th Annual European Symposium on Algorithms, vol. 6942, Springer Nature, 2011, pp. 192–202, doi:10.1007/978-3-642-23719-5_17. short: M.H. Henzinger, A. Vidali, in:, 19th Annual European Symposium on Algorithms, Springer Nature, 2011, pp. 192–202. conference: end_date: 2011-09-09 location: Saarbrücken, Germany name: 'ESA: European Symposium on Algorithms' start_date: 2011-09-05 date_created: 2022-08-11T11:51:39Z date_published: 2011-09-01T00:00:00Z date_updated: 2023-02-13T11:32:41Z day: '01' doi: 10.1007/978-3-642-23719-5_17 extern: '1' intvolume: ' 6942' language: - iso: eng month: '09' oa_version: None page: 192–202 publication: 19th Annual European Symposium on Algorithms publication_identifier: isbn: - '9783642237188' issn: - 1611-3349 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Multi-parameter mechanism design under budget and matroid constraints type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 6942 year: '2011' ... --- _id: '11864' abstract: - lang: eng text: Auctions are widely used on the Web. Applications range from internet advertising to platforms such as eBay. In most of these applications the auctions in use are single/multi-item auctions with unit demand. The main drawback of standard mechanisms for this type of auctions, such as VCG and GSP, is the limited expressiveness that they offer to the bidders. The General Auction Mechanism (GAM) of [1] is taking a first step towards addressing the problem of limited expressiveness by computing a bidder optimal, envy free outcome for linear utility functions with identical slopes and a single discontinuity per bidder-item pair. We show that in many practical situations this does not suffice to adequately model the preferences of the bidders, and we overcome this problem by presenting the first mechanism for piece-wise linear utility functions with non-identical slopes and multiple discontinuities. Our mechanism runs in polynomial time. Like GAM it is incentive compatible for inputs that fulfill a certain non-degeneracy requirement, but our requirement is more general than the requirement of GAM. For discontinuous utility functions that are non-degenerate as well as for continuous utility functions the outcome of our mechanism is a competitive equilibrium. We also show how our mechanism can be used to compute approximately bidder optimal, envy free outcomes for a general class of continuous utility functions via piece-wise linear approximation. Finally, we prove hardness results for even more expressive settings. article_processing_charge: No author: - first_name: Paul full_name: Dütting, Paul last_name: Dütting - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Ingmar full_name: Weber, Ingmar last_name: Weber citation: ama: 'Dütting P, Henzinger MH, Weber I. An expressive mechanism for auctions on the web. In: Proceedings of the 20th International Conference on World Wide Web. Association for Computing Machinery; 2011:127-136. doi:10.1145/1963405.1963427' apa: 'Dütting, P., Henzinger, M. H., & Weber, I. (2011). An expressive mechanism for auctions on the web. In Proceedings of the 20th international conference on World wide web (pp. 127–136). Hyderabad, India: Association for Computing Machinery. https://doi.org/10.1145/1963405.1963427' chicago: Dütting, Paul, Monika H Henzinger, and Ingmar Weber. “An Expressive Mechanism for Auctions on the Web.” In Proceedings of the 20th International Conference on World Wide Web, 127–36. Association for Computing Machinery, 2011. https://doi.org/10.1145/1963405.1963427. ieee: P. Dütting, M. H. Henzinger, and I. Weber, “An expressive mechanism for auctions on the web,” in Proceedings of the 20th international conference on World wide web, Hyderabad, India, 2011, pp. 127–136. ista: 'Dütting P, Henzinger MH, Weber I. 2011. An expressive mechanism for auctions on the web. Proceedings of the 20th international conference on World wide web. WWW: International Conference on World Wide Web, 127–136.' mla: Dütting, Paul, et al. “An Expressive Mechanism for Auctions on the Web.” Proceedings of the 20th International Conference on World Wide Web, Association for Computing Machinery, 2011, pp. 127–36, doi:10.1145/1963405.1963427. short: P. Dütting, M.H. Henzinger, I. Weber, in:, Proceedings of the 20th International Conference on World Wide Web, Association for Computing Machinery, 2011, pp. 127–136. conference: end_date: 2011-04-01 location: Hyderabad, India name: 'WWW: International Conference on World Wide Web' start_date: 2011-03-28 date_created: 2022-08-16T09:05:34Z date_published: 2011-04-01T00:00:00Z date_updated: 2023-02-17T10:21:18Z day: '01' doi: 10.1145/1963405.1963427 extern: '1' language: - iso: eng month: '04' oa_version: None page: 127 - 136 publication: Proceedings of the 20th international conference on World wide web publication_identifier: isbn: - 978-145030632-4 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' scopus_import: '1' status: public title: An expressive mechanism for auctions on the web type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2011' ... --- _id: '12651' abstract: - lang: eng text: Temperature data from three Automatic Weather Stations and twelve Temperature Loggers are used to investigate the spatiotemporal variability of temperature over a glacier, its main atmospheric controls, the suitability of extrapolation techniques and their effect on melt modeling. We use data collected on Juncal Norte Glacier, central Chile, during one ablation season. We examine temporal and spatial variability in lapse rates (LRs), together with alternative statistical interpolation methods. The main control over the glacier thermal regime is the development of a katabatic boundary layer (KBL). Katabatic wind occurs at night and in the morning and is eroded in the afternoon. LRs reveal strong diurnal variability, with steeper LRs during the day when the katabatic wind weakens and shallower LRs during the night and morning. We suggest that temporally variable LRs should be used to account for the observed change. They tend to be steeper than equivalent constant LRs, and therefore result in a reduction in simulated melt compared to use of constant LRs when extrapolating from lower to higher elevations. In addition to the temporal variability, the temperature-elevation relationship varies also in space. Differences are evident between local LRs and including such variability in melt modeling affects melt simulations. Extrapolation methods based on the spatial variability of the observations after removal of the elevation trend, such as Inverse Distance Weighting or Kriging, do not seem necessary for simulations of gridded temperature data over a glacier. article_number: D23109 article_processing_charge: No article_type: original author: - first_name: L. full_name: Petersen, L. last_name: Petersen - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti citation: ama: 'Petersen L, Pellicciotti F. Spatial and temporal variability of air temperature on a melting glacier: Atmospheric controls, extrapolation methods and their effect on melt modeling, Juncal Norte Glacier, Chile. Journal of Geophysical Research: Atmospheres. 2011;116(D23). doi:10.1029/2011jd015842' apa: 'Petersen, L., & Pellicciotti, F. (2011). Spatial and temporal variability of air temperature on a melting glacier: Atmospheric controls, extrapolation methods and their effect on melt modeling, Juncal Norte Glacier, Chile. Journal of Geophysical Research: Atmospheres. American Geophysical Union. https://doi.org/10.1029/2011jd015842' chicago: 'Petersen, L., and Francesca Pellicciotti. “Spatial and Temporal Variability of Air Temperature on a Melting Glacier: Atmospheric Controls, Extrapolation Methods and Their Effect on Melt Modeling, Juncal Norte Glacier, Chile.” Journal of Geophysical Research: Atmospheres. American Geophysical Union, 2011. https://doi.org/10.1029/2011jd015842.' ieee: 'L. Petersen and F. Pellicciotti, “Spatial and temporal variability of air temperature on a melting glacier: Atmospheric controls, extrapolation methods and their effect on melt modeling, Juncal Norte Glacier, Chile,” Journal of Geophysical Research: Atmospheres, vol. 116, no. D23. American Geophysical Union, 2011.' ista: 'Petersen L, Pellicciotti F. 2011. Spatial and temporal variability of air temperature on a melting glacier: Atmospheric controls, extrapolation methods and their effect on melt modeling, Juncal Norte Glacier, Chile. Journal of Geophysical Research: Atmospheres. 116(D23), D23109.' mla: 'Petersen, L., and Francesca Pellicciotti. “Spatial and Temporal Variability of Air Temperature on a Melting Glacier: Atmospheric Controls, Extrapolation Methods and Their Effect on Melt Modeling, Juncal Norte Glacier, Chile.” Journal of Geophysical Research: Atmospheres, vol. 116, no. D23, D23109, American Geophysical Union, 2011, doi:10.1029/2011jd015842.' short: 'L. Petersen, F. Pellicciotti, Journal of Geophysical Research: Atmospheres 116 (2011).' date_created: 2023-02-20T08:18:14Z date_published: 2011-12-16T00:00:00Z date_updated: 2023-02-20T10:29:44Z day: '16' doi: 10.1029/2011jd015842 extern: '1' intvolume: ' 116' issue: D23 keyword: - Paleontology - Space and Planetary Science - Earth and Planetary Sciences (miscellaneous) - Atmospheric Science - Earth-Surface Processes - Geochemistry and Petrology - Soil Science - Water Science and Technology - Ecology - Aquatic Science - Forestry - Oceanography - Geophysics language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1029/2011JD01584 month: '12' oa: 1 oa_version: Published Version publication: 'Journal of Geophysical Research: Atmospheres' publication_identifier: issn: - 0148-0227 publication_status: published publisher: American Geophysical Union quality_controlled: '1' scopus_import: '1' status: public title: 'Spatial and temporal variability of air temperature on a melting glacier: Atmospheric controls, extrapolation methods and their effect on melt modeling, Juncal Norte Glacier, Chile' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 116 year: '2011' ... --- _id: '12649' abstract: - lang: eng text: Physically based hydrological models describe natural processes more accurately than conceptual models but require extensive data sets to produce accurate results. To identify the value of different data sets for improving the performance of the distributed hydrological model TOPKAPI we combine a multivariable validation technique with Monte Carlo simulations. The study is carried out in the snow and ice-dominated Rhonegletscher basin, as these types of mountainous basins are generally the most critical with respect to data availability and sensitivity to climate fluctuations. Each observational data set is used individually and in combination with the other data sets to determine a subset of best parameter combinations out of 10,000 Monte Carlos runs performed with randomly generated parameter sets. We validate model results against discharge, glacier mass balance, and satellite snow cover images for a 14 year time period (1994–2007). While the use of all data sets combined provides the best overall model performance (defined by the concurrent best agreement of simulated discharge, snow cover and mass balance with their respective measurements), the use of one or two variables for constraining the model results in poorer performance. Using only one data set for constraining the model glacier mass balance proved to be the most efficient observation leading to the best overall model performance. Our main result is that a combination of discharge and satellite snow cover images is best for improving model performance, since the volumetric information of discharge data and the spatial information of snow cover images are complementary. article_number: W07519 article_processing_charge: No article_type: original author: - first_name: David full_name: Finger, David last_name: Finger - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti - first_name: Markus full_name: Konz, Markus last_name: Konz - first_name: Stefan full_name: Rimkus, Stefan last_name: Rimkus - first_name: Paolo full_name: Burlando, Paolo last_name: Burlando citation: ama: Finger D, Pellicciotti F, Konz M, Rimkus S, Burlando P. The value of glacier mass balance, satellite snow cover images, and hourly discharge for improving the performance of a physically based distributed hydrological model. Water Resources Research. 2011;47(7). doi:10.1029/2010wr009824 apa: Finger, D., Pellicciotti, F., Konz, M., Rimkus, S., & Burlando, P. (2011). The value of glacier mass balance, satellite snow cover images, and hourly discharge for improving the performance of a physically based distributed hydrological model. Water Resources Research. American Geophysical Union. https://doi.org/10.1029/2010wr009824 chicago: Finger, David, Francesca Pellicciotti, Markus Konz, Stefan Rimkus, and Paolo Burlando. “The Value of Glacier Mass Balance, Satellite Snow Cover Images, and Hourly Discharge for Improving the Performance of a Physically Based Distributed Hydrological Model.” Water Resources Research. American Geophysical Union, 2011. https://doi.org/10.1029/2010wr009824. ieee: D. Finger, F. Pellicciotti, M. Konz, S. Rimkus, and P. Burlando, “The value of glacier mass balance, satellite snow cover images, and hourly discharge for improving the performance of a physically based distributed hydrological model,” Water Resources Research, vol. 47, no. 7. American Geophysical Union, 2011. ista: Finger D, Pellicciotti F, Konz M, Rimkus S, Burlando P. 2011. The value of glacier mass balance, satellite snow cover images, and hourly discharge for improving the performance of a physically based distributed hydrological model. Water Resources Research. 47(7), W07519. mla: Finger, David, et al. “The Value of Glacier Mass Balance, Satellite Snow Cover Images, and Hourly Discharge for Improving the Performance of a Physically Based Distributed Hydrological Model.” Water Resources Research, vol. 47, no. 7, W07519, American Geophysical Union, 2011, doi:10.1029/2010wr009824. short: D. Finger, F. Pellicciotti, M. Konz, S. Rimkus, P. Burlando, Water Resources Research 47 (2011). date_created: 2023-02-20T08:18:03Z date_published: 2011-07-01T00:00:00Z date_updated: 2023-02-20T10:39:57Z day: '01' doi: 10.1029/2010wr009824 extern: '1' intvolume: ' 47' issue: '7' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1029/2010WR009824 month: '07' oa: 1 oa_version: Published Version publication: Water Resources Research publication_identifier: issn: - 0043-1397 publication_status: published publisher: American Geophysical Union quality_controlled: '1' scopus_import: '1' status: public title: The value of glacier mass balance, satellite snow cover images, and hourly discharge for improving the performance of a physically based distributed hydrological model type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 47 year: '2011' ... --- _id: '12652' abstract: - lang: eng text: We explore the robustness and transferability of parameterizations of cloud radiative forcing used in glacier melt models at two sites in the Swiss Alps. We also look at the rationale behind some of the most commonly used approaches, and explore the relationship between cloud transmittance and several standard meteorological variables. The 2 m air-temperature diurnal range is the best predictor of variations in cloud transmittance. However, linear and exponential parameterizations can only explain 30–50% of the observed variance in computed cloud transmittance factors. We examine the impact of modelled cloud transmittance factors on both solar radiation and ablation rates computed with an enhanced temperature-index model. The melt model performance decreases when modelled radiation is used, the reduction being due to an underestimation of incoming solar radiation on clear-sky days. The model works well under overcast conditions. We also seek alternatives to the use of in situ ground data. However, outputs from an atmospheric model (2.2 km horizontal resolution) do not seem to provide an alternative to the parameterizations of cloud radiative forcing based on observations of air temperature at glacier automatic weather stations. Conversely, the correct definition of overcast conditions is important. article_processing_charge: No article_type: original author: - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti - first_name: Thomas full_name: Raschle, Thomas last_name: Raschle - first_name: Thomas full_name: Huerlimann, Thomas last_name: Huerlimann - first_name: Marco full_name: Carenzo, Marco last_name: Carenzo - first_name: Paolo full_name: Burlando, Paolo last_name: Burlando citation: ama: 'Pellicciotti F, Raschle T, Huerlimann T, Carenzo M, Burlando P. Transmission of solar radiation through clouds on melting glaciers: A comparison of parameterizations and their impact on melt modelling. Journal of Glaciology. 2011;57(202):367-381. doi:10.3189/002214311796406013' apa: 'Pellicciotti, F., Raschle, T., Huerlimann, T., Carenzo, M., & Burlando, P. (2011). Transmission of solar radiation through clouds on melting glaciers: A comparison of parameterizations and their impact on melt modelling. Journal of Glaciology. Cambridge University Press. https://doi.org/10.3189/002214311796406013' chicago: 'Pellicciotti, Francesca, Thomas Raschle, Thomas Huerlimann, Marco Carenzo, and Paolo Burlando. “Transmission of Solar Radiation through Clouds on Melting Glaciers: A Comparison of Parameterizations and Their Impact on Melt Modelling.” Journal of Glaciology. Cambridge University Press, 2011. https://doi.org/10.3189/002214311796406013.' ieee: 'F. Pellicciotti, T. Raschle, T. Huerlimann, M. Carenzo, and P. Burlando, “Transmission of solar radiation through clouds on melting glaciers: A comparison of parameterizations and their impact on melt modelling,” Journal of Glaciology, vol. 57, no. 202. Cambridge University Press, pp. 367–381, 2011.' ista: 'Pellicciotti F, Raschle T, Huerlimann T, Carenzo M, Burlando P. 2011. Transmission of solar radiation through clouds on melting glaciers: A comparison of parameterizations and their impact on melt modelling. Journal of Glaciology. 57(202), 367–381.' mla: 'Pellicciotti, Francesca, et al. “Transmission of Solar Radiation through Clouds on Melting Glaciers: A Comparison of Parameterizations and Their Impact on Melt Modelling.” Journal of Glaciology, vol. 57, no. 202, Cambridge University Press, 2011, pp. 367–81, doi:10.3189/002214311796406013.' short: F. Pellicciotti, T. Raschle, T. Huerlimann, M. Carenzo, P. Burlando, Journal of Glaciology 57 (2011) 367–381. date_created: 2023-02-20T08:18:21Z date_published: 2011-03-01T00:00:00Z date_updated: 2023-02-20T09:47:00Z day: '01' doi: 10.3189/002214311796406013 extern: '1' intvolume: ' 57' issue: '202' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3189/002214311796406013 month: '03' oa: 1 oa_version: Published Version page: 367-381 publication: Journal of Glaciology publication_identifier: eissn: - 1727-5652 issn: - 0022-1430 publication_status: published publisher: Cambridge University Press quality_controlled: '1' scopus_import: '1' status: public title: 'Transmission of solar radiation through clouds on melting glaciers: A comparison of parameterizations and their impact on melt modelling' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 57 year: '2011' ... --- _id: '12650' abstract: - lang: eng text: Streamflow is a hydrological variable measured at a defined river cross-section; it spatially integrates the runoff generating processes in the contributing watershed, including precipitation and air temperature. Trends in streamflow are progressive changes in the time series of streamflow that can be detected with statistical methods and their statistical significance can be assessed. Mountainous regions are particularly vulnerable to streamflow change because of their high specific runoff and the sensitivity to the distribution of precipitation and air temperature, and the processes of snow accumulation and melt. alternative_title: - Encyclopedia of Earth Sciences Series article_processing_charge: No author: - first_name: Peter full_name: Molnar, Peter last_name: Molnar - first_name: Paolo full_name: Burlando, Paolo last_name: Burlando - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti citation: ama: 'Molnar P, Burlando P, Pellicciotti F. Streamflow Trends in Mountainous Regions. In: Singh V, Singh P, Haritashya U, eds. Encyclopedia of Snow, Ice and Glaciers. 1st ed. Dordrecht: Springer Nature; 2011:1084-1089. doi:10.1007/978-90-481-2642-2_543' apa: 'Molnar, P., Burlando, P., & Pellicciotti, F. (2011). Streamflow Trends in Mountainous Regions. In V. Singh, P. Singh, & U. Haritashya (Eds.), Encyclopedia of Snow, Ice and Glaciers (1st ed., pp. 1084–1089). Dordrecht: Springer Nature. https://doi.org/10.1007/978-90-481-2642-2_543' chicago: 'Molnar, Peter, Paolo Burlando, and Francesca Pellicciotti. “Streamflow Trends in Mountainous Regions.” In Encyclopedia of Snow, Ice and Glaciers, edited by Vijay Singh, Pratap Singh, and Umesh Haritashya, 1st ed., 1084–89. Dordrecht: Springer Nature, 2011. https://doi.org/10.1007/978-90-481-2642-2_543.' ieee: 'P. Molnar, P. Burlando, and F. Pellicciotti, “Streamflow Trends in Mountainous Regions,” in Encyclopedia of Snow, Ice and Glaciers, 1st ed., V. Singh, P. Singh, and U. Haritashya, Eds. Dordrecht: Springer Nature, 2011, pp. 1084–1089.' ista: 'Molnar P, Burlando P, Pellicciotti F. 2011.Streamflow Trends in Mountainous Regions. In: Encyclopedia of Snow, Ice and Glaciers. Encyclopedia of Earth Sciences Series, , 1084–1089.' mla: Molnar, Peter, et al. “Streamflow Trends in Mountainous Regions.” Encyclopedia of Snow, Ice and Glaciers, edited by Vijay Singh et al., 1st ed., Springer Nature, 2011, pp. 1084–89, doi:10.1007/978-90-481-2642-2_543. short: P. Molnar, P. Burlando, F. Pellicciotti, in:, V. Singh, P. Singh, U. Haritashya (Eds.), Encyclopedia of Snow, Ice and Glaciers, 1st ed., Springer Nature, Dordrecht, 2011, pp. 1084–1089. date_created: 2023-02-20T08:18:07Z date_published: 2011-07-01T00:00:00Z date_updated: 2023-02-20T10:35:28Z day: '01' doi: 10.1007/978-90-481-2642-2_543 edition: '1' editor: - first_name: Vijay full_name: Singh, Vijay last_name: Singh - first_name: Pratap full_name: Singh, Pratap last_name: Singh - first_name: Umesh full_name: Haritashya, Umesh last_name: Haritashya extern: '1' language: - iso: eng month: '07' oa_version: None page: 1084-1089 place: Dordrecht publication: Encyclopedia of Snow, Ice and Glaciers publication_identifier: eisbn: - 978-90-481-2642-2 eissn: - 1871-756X isbn: - 978-90-481-2641-5 issn: - 1388-4360 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Streamflow Trends in Mountainous Regions type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2011' ...