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Glaciological Data Report 32 GLACIOLOGICAL DATA Report GD-32 PAPERS AND RECOMMENDATIONS: Snow Watch 2002 Workshop and Workshop on Assessing Global Glacier Recession National Snow and Ice Data Center World Data Center for Glaciology, Boulder December 2003 Glaciological Data REPORT GD-32 PAPERS AND RECOMMENDATIONS: Snow Watch 2002 Workshop and Workshop on Assessing Global Glacier Recession Editor: Amy Casey Copyeditor: Jason Wolfe Compiler: Daryl Kohlerschmidt Published by: National Snow and Ice Data Center World Data Center for Glaciology, Boulder Cooperative Institute for Research in Environmental Sciences University of colorado Boulder, CO 80309-0449 USA December 2003 PREFACE This issue contains the reports and recommendations from two workshops. The Snow Watch 2002 continued a series that began in 1978. The most recent workshop was hosted by NOAA in Camp Spring, MD, 31 October through 1 November, 2002. It was convened by Bruce Ramsay, whose assistance is much appreciated. The Workshop on Global Glacier Recession was held in Boulder, CO, 16-18 March 2003. Fund- ing for the workshop was provided by NSF (EAR-0307144) through a grant to Roger Barry. The responsible Program Manager was Dr. Douglas James (GEO/EAR). Contributing funds were contributed by Drs. Jane Dionne (OPP), H. Richard Lane (GEO/EAR), Cassandra Dudka (NSF International), Julie Palais (OPP), and David Verado (GEO/ATM). Thanks are due to Kathy Zellers, CIRES, who coordinated the workshop logistics, Daryl Kohler- schmidt, NSIDC, for clerical support, and Amy Casey, NSIDC, for editorial assistance. Roger G. Barry Director National Snow and Ice Data Center World Data Center for Glaciology, Boulder iii iv Contents Preface .............................................................................................................iii Section 1: Snow Watch 2002 Workshop ....................................................... 1 Snow Watch 2002 Workshop Introduction ....................................................3 Snow Watch 2002 Agenda ..............................................................................5 Snow Watch 2002 Abstracts ...........................................................................9 Planned Contributions of the WCRP Climate and Cryosphere (CliC) Project to Snow Cover Studies ................................................................................................................ 9 Passive Microwave Derived Snow Cover Products for Canadian Regions – Supporting Research and Operational Applications .................................................... 10 Global Snow Depth Monitoring Using Passive Microwave Data ................................. 10 A Blended Snow Cover Data Set ................................................................................ 11 Current and Future Snow Mapping at NOAA/NESDIS ................................................ 11 Development of a Gridded North American Snow Depth and Water Equivalent Data Set for General Circulation Model (GCM) Evaluation: Results with an Enhanced Snowpack Model ......................................................................................................... 12 Relationships Between Spatial Patterns of Snow Water Equivalent and Atmospheric Circulation For Central North America, 1978 - 2001 .............................. 13 The Northern Hemisphere’s Spring Snow “Drought” ................................................... 14 An Analysis Of The Spring Snow 'Drought' Of Recent Decades In Terms Of Snow-AO Relationship On Weekly To Monthly Time Scales ...................................... 14 Relation of Spring Snow “Drought” of Recent Decades to Phase of AO and PNA During Previous Winter Season .................................................................................. 14 Monitoring Global Snow Cover Using Passive Microwave Satellite Remote Sensing: Long-Term Climatologies from Historical Data Sets and Near Real-Time Products from EOS Data ............................................................................................................ 15 Preliminary Results from AMIP-2: Snow Extent and Water Equivalent Simulations ... 16 Snow Cover and its Ablation in the Appalachian Mountains ....................................... 16 Streamflow Response to Snow Cover Extent Change in Large Siberian Rivers ........ 17 Snow Watch Working Groups ......................................................................19 Snow Watch Working Group 1: Surface Observations .......................................... 19 Station Networks ......................................................................................................... 19 Recommendations ................................................................................................ 19 Measurement Standards ............................................................................................. 19 Recommendations ................................................................................................ 20 Historical Data ............................................................................................................. 20 Recommendations ................................................................................................ 20 Field Programs ............................................................................................................ 20 Recommendations ................................................................................................ 20 Progress Since Snow Watch '92 ................................................................................. 21 Snow Watch Working Group 2: Spatial Variability .............................................. 22 History of Accomplishments ........................................................................................ 22 Important Future Issues .............................................................................................. 23 v Snow Watch Working Group 3: Time Series and Change Detection .................... 24 Overview ......................................................................................................................24 Snow Cover Records ...................................................................................................24 Statistical Evaluation ....................................................................................................24 Creativity ......................................................................................................................24 Snow Watch 2002 Attendees ....................................................................... 27 Section 2: Workshop on Assessing Global Glacier Recession................ 31 Assessing Global Glacier Recession Workshop Agenda ........................................................................................ 33 Assessing Global Glacier Recession: Results of the Workshop ............. 35 Summary ............................................................................................................... 35 Rationale ......................................................................................................................35 Status and Goals .........................................................................................................36 Workshop Results ........................................................................................................37 References .............................................................................................................. 37 Workshop Working Group Assessments ................................................... 39 Working Group 1: Assessment of GCOS Variables ............................................. 39 Recommendations .......................................................................................................39 Crosscutting Issues .....................................................................................................40 Working Group 2: World Glacier Inventories ....................................................... 41 History of Glacier Inventories .......................................................................................41 Current Inventory Efforts ..............................................................................................41 Definition of Inventory ..................................................................................................42 Mechanisms to Bring These Steps About ....................................................................42 Working Group 3: Glacier Mapping ...................................................................... 44 List of Glacier Inventories ...........................................................................................45 Summary of Overall Workshop Recommendations ............................................... 46 Unifying Themes ..........................................................................................................46 Recommended Actions ................................................................................................46 Workshop Papers and Presentations ......................................................... 49 Observational Evidence of Accelerated Glacier Wastage: Uncertainty in Prediction ..................................................................................... 49 The Importance of Glacier Volume Change: Some Examples ....................................49 Explanation of Peaks and Valleys ...............................................................................50
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