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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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search workshop on atmospheric cryospheric observations

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

slide2

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

slide3
Develop a protocol for “detection” of

Arctic change

  • Easy to understand
  • Includes natural variability
  • Multivariate
slide4

Vorticity Index

Global Mean SAT Anomaly

Polyakov & Johnson,2000

Scott, 2001

Ice Anomaly

Venegas & Mysak, 2000

slide7

Winter Severity Index

Thompson, et al. 2001

slide9

Surface Temperature Trend 1950-96 (C/decade)

AO Surface Temperature Anomalies 1950-96 (C)

http://tao.atmos.washington.edu/analyses0500

wmo publication no 9 volume a

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

slide11

Location of Buoys over the Arctic Ocean

http://iabp.apl.washington.edu

wmo publication no 9 volume a1

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
Temperature Anomalies Based on TOVS Path-P Data Set for March During 1990s at 200 hPa

J. E. Overland

slide14

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

slide15

The International Tundra Experiment (ITEX)Arctic and Subarctic Field Sites

http://www.systbot.gu.se/research/itex/itexmap.html

slide18

Forman, et al., 2000,

EOS Transitions

slide19

Ice thickness (m)

Difference Ice Thickness

http://www.pac.dfo-mpo.gc.ca/sci/osap/projects/jpod/projects/arc_thin/thin1.htm

ecmwf sw radiation april

125 Wm-2

-50

ECMWF SW Radiation April

E40 – E15

P. Viterbo

slide23

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