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Smith, Jr., Walker O.

Polynyas

Windows to the World

Herausgeber: Smith, Jr., Walker O.Barber, David
Verlag: Elsevier Science, Oxford
Reihentitel: Elsevier oceanography series
Band: Band 74
Zusatzinfo: 475 Seiten.
ISBN13: 9780080522937
ISBN10: 0080522939
Erschienen: 09.07.2007
Medientyp: E-Book
Einbandart: ebook
Land: Niederlande
Sprache: Englisch
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Polynyas are relatively ice-free regions when compared to the areas around them, and have been suggested as being foci for energy transfer between the atmosphere and ocean, ice "factories?, and critical areas with respect to polar ecosystems and biogeochemical cycles. This volume presents an integrated, multidisciplinary review of polynyas in both the Arctic and Antarctic. It emphasizes the meteorology, ice dynamics, oceanography, biological components, chemistry, and modeling of these systems, particularly with respect to their roles in polar processes and distributions. The various interactions within polynyas, particularly between the physical forcing and biological responses, is emphasized, as are the potential changes in polynyas that might occur under a climate regime that is rapidly changing. The authors of the reviews are leaders among their respective countries in polynya research, and all are internationally recognized.* Addresses the findings from actively researched polynyas and reports on the new understandings of polar systems that have evolved from these studies* Includes topics from meteorology to physics to biology and chemistry, and seeks to integrate them into a synthetic assessment* Provides material from both the Arctic and Antarctic, which is highly unusual in books of this type
  • Cover
  • Contents
  • List of Contributors
  • Foreword
  • Preface
  • Chapter 1. The Role of Sea Ice in Arctic and Antarctic Polynyas
  • 1. Introduction
  • 2. Polynyas, Sea Ice and Climate Variability/Change
  • 3. An Inventory of Arctic and Antarctic Polynyas
  • 4. Detailed Case Studies
  • 5. Conclusions
  • Acknowledgements
  • References
  • Chapter 2. Physical Oceanography of Polynyas
  • 1. Introduction
  • 2. Polynya Formation Processes
  • 3. Physical Oceanography
  • 4. Biological Importance of Polynyas
  • 5. Future Research in a Changing Environment
  • Acknowledgements
  • References
  • Chapter 3. Polynya Modelling
  • 1. Introduction
  • 2. Flux Model Approach
  • 3. Parameterisations for the Collection Thickness H
  • 4. Opening of a One-Dimensional Polynya
  • 5. Two-Dimensional Steady-State Solutions
  • 6. Two-Dimensional Steady-State Solutions with Ocean Currents
  • 7. Unsteady 2-Dimensional Flux Models
  • 8. Polynya Closing
  • 9. A Polynya Flux Model with a Prognostic Frazil Ice Concentration
  • 10. Coupled Atmosphere-Polynya Flux Model
  • 11. General Circulation Modelling Approach
  • 12. Ice GCM Equations
  • 13. Numerical Methods in Ice GCMs
  • 14. Regional Ice GCM Applications
  • 15. Conclusions
  • Acknowledgements
  • References
  • Chapter 4. Meteorology and Atmosphere-Surface Coupling in and around Polynyas
  • 1. Introduction
  • 2. Measurements of Meteorological Variables
  • 3. NWP Models
  • 4. Surface Interactions
  • 5. Outlook for the Future
  • 6. Summary
  • Appendix A: Acronyms
  • References
  • Chapter 5. Gas Fluxes and Dynamics in Polynyas
  • 1. Introduction
  • 2. Gases in Cold, Salty Water
  • 3. Carbon
  • 4. Sulfur
  • 5. Methylhalides
  • 6. The Future for Air-Sea Gas Exchange in Polynyas
  • Acknowledgements
  • References
  • Chapter 6. Biogeochemistry of Polynyas and Their Role in Sequestration of Anthropogenic Constituents
  • 1. Introduction
  • 2. Antarctic Polynyas
  • 3. Polynyas in the Arctic Ocean
  • References
  • Chapter 7. Physical Control of Primary Productivity in Arctic and Antarctic Polynyas
  • 1. Introduction
  • 2. Formation of the Four Major Polynyas
  • 3. Role of Physicochemical Properties of Polynyas
  • 4. Cloud Reduction over Polynyas with High Latent Heat Flux
  • 5. Timing of Polynya Expansion
  • References
  • Chapter 8. Primary Production and Nutrient Dynamics in Polynyas
  • 1. Introduction
  • 2. Phytoplankton Characteristics of Individual Polynyas
  • 3. Ecological Consequences of Polynya Production
  • 4. Comparison of Arctic and Antarctic Polynyas
  • 5. Summary and Conclusions
  • Acknowledgements
  • References
  • Chapter 9. Zooplankton Processes in Arctic and Antarctic Polynyas
  • 1. Introduction
  • 2. Zooplankton in Arctic Ocean Polynyas
  • 3. Zooplankton of the Southern Ocean
  • 4. Conclusions
  • Acknowledgements
  • References
  • Chapter 10. Pelagic Bacterial Processes in Polynyas
  • 1. Introduction
  • 2. Overview: Microbial Food Webs in Polar Seas
  • 3. Bacterial Processes in the Ross Sea Polynya (RSP)
  • 4. Bacterial Processes in Greenland Polynyas (NEW and NOW)
  • 5. Other Polynyas
  • 6. Summary and Prospects
  • Acknowledgements
  • References
  • Chapter 11. Benthic Processes in Polynyas
  • 1. Introduction
  • 2. General Polynya Patterns and Processes
  • 3. Means to Assess Interpolynya Differences
  • 4. Rate Processes and Their Controls
  • 5. Conclusions
  • Acknowledgements
  • References
  • Chapter 12. The Impact and Importance of Production in Polynyas to Top-Trophic Predators: Three Case Histories
  • 1. Introduction
  • 2. Ross Sea Polynya
  • 3. North Water Polynya
  • 4. Northeast Water Polynya
  • 5. Conclusion
  • References
  • Chapter 13. Polynyas and Climate Change: A View to the Future
  • 1. Introduction
  • 2. Polynyas and Climate Change: The Arctic
  • 3. Polynyas and Climate Change: The Antarctic
  • 4. Conclusions
  • References
  • Author Index
  • Subject Index
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