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http://www.epic.noaa.gov/SEARCH/obs/workshop /. SEARCH Workshop on Atmospheric-Cryospheric Observations. Jim Overland Florence Fetterer David McGuire Jackie Richter-Menge John Walsh. Background courtesy of LAII. SEARCH Workshop on Atmospheric-Cryospheric Observations
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http://www.epic.noaa.gov/SEARCH/obs/workshop/ SEARCH Workshop on Atmospheric-Cryospheric Observations Jim Overland Florence Fetterer David McGuire Jackie Richter-Menge John Walsh Background courtesy of LAII
SEARCH Workshop on Atmospheric-Cryospheric Observations http://www.epic.noaa.gov/SEARCH/obs/workshop/ 27-29 November, 2001 60 Scientists Atmosphere Land Sea Ice Arctic Systems Reanalysis Did not look at Oceans Paleo Biology
Develop a protocol for “detection” of Arctic change • Easy to understand • Includes natural variability • Multivariate
Vorticity Index Global Mean SAT Anomaly Polyakov & Johnson,2000 Scott, 2001 Ice Anomaly Venegas & Mysak, 2000
FREQUENCY OF OCCURRENCE OF EXTREME COLD EVENTS Thompson, et al. 2001
Winter Severity Index Thompson, et al. 2001
Difference In Daily Mean Surface Temperature Anomalies Thompson, et al. 2001
Surface Temperature Trend 1950-96 (C/decade) AO Surface Temperature Anomalies 1950-96 (C) http://tao.atmos.washington.edu/analyses0500
2477 WMO Publication No. 9 Volume A B.E. Goodison & P. Louie All active Synoptic Stations north of 50 N as of 29 Oct 2001
Location of Buoys over the Arctic Ocean http://iabp.apl.washington.edu
238 WMO Publication No. 9 Volume A B.E. Goodison & P. Louie All active Upper Air Stations north of 50 N as of 29 Oct 2001
Temperature Anomalies Based on TOVS Path-P Data Set for March During 1990s at 200 hPa J. E. Overland
FLUX/ATLAS Research Sites Alaska LTER Research Sites IGBP High Latitude Transects The high latitude transects span significant variation in several environmental variables and provide a network for improving our understanding of controls over vegetation dynamics, carbon dynamics and water/energy exchange in high latitudes Objective of studies by High Latitude Transects Working Group: Evaluate how vegetation dynamics, carbon dynamics, and water/energy exchange are related to environmental variation spanned by the network of high latitude transects (McGuire et al., in press) D. McGuire
The International Tundra Experiment (ITEX)Arctic and Subarctic Field Sites http://www.systbot.gu.se/research/itex/itexmap.html
Candidate Boreholes for Permafrost Thermal Monitoring V. E. Romanovsky
Mean Annual Temperature at Churapcha Station, East Siberia V. E. Romanovsky
Forman, et al., 2000, EOS Transitions
Ice thickness (m) Difference Ice Thickness http://www.pac.dfo-mpo.gc.ca/sci/osap/projects/jpod/projects/arc_thin/thin1.htm
125 Wm-2 -50 ECMWF SW Radiation April E40 – E15 P. Viterbo
NCEP Eta 32 km/ 45 Layer Model Topography Fedor Mesinger
Preliminary Workshop Recommendations: • Develop Protocol for Arctic Change • Support Arctic Buoy Program • Recalibrate and Update TOVS data • Russian Data Rescue and Update • Continue Specialized Land Time Series • Enhance Alert Series as Intensive Site • Undertake an Arctic System Reanalysis Polar Bears: courtesy of J. Morison