AMAP_Arctic_Multi_Indicators
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parameterunitscontributor
source notes
description
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air temperature pan-Arcticdeg. CMuyin Wang, NOAA/Pacific Marine Environmental Laboratory, Seattle WA, USA
NCEP/NCAR Reanalysis
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air temperature, regionaldeg. CJason E. Box, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark
NCEP/NCAR Reanalysis
Temperature anomalies vs 1980-2010, deg. C
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permafrost temperature, N Slope Alaskadeg. CVladimir E. Romanovsky, Geophysical Institute, University of Alaska Fairbanks, USA
Averaged Temp at 20 m depth at three North Slope sites (West Dock, Deadhorse, Frankiln Bluffs)
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Precipitation, warm season, cold season, annualmm water equivalentJason E. Box, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark
NCEP/NCAR Reanalysis
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river dischargekm^3/y
Johanna Mård, Department of Earth Sciences, Uppsala University, Sweden
Global Runoff Data Centre, 56068 Koblenz, Germany
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Arctic tundra NDVIdimensionlessUma S. Bhatt, Department of Atmospheric Sciences, Geophysical Institute, University of Alaska Fairbanks
GIMMS NDVI3g V1.1 1982-2017 is a 1/8 degree product based on AVHRR sensors and is a global data set with observations twice monthly (first and second half of each month). Maximum NDVI is largest value during growing season and TI-NDVI is the time integrated NDVI from May-Sept for values greater than 0.05.
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snowcover durationdaysRoss Brown, Climate Research Division, Environment and Climate Change CanadaNOAA-CDR
Arctic land area spring snow cover duration is the number of days with snow on the ground over the 6 month period Feb-July (the 2nd half of the snow season). Anomalies are computed with respect to the 1981-2010 average and the grid values are weighted by cell area when computing the Arctic average anomaly. Greenland is excluded because the NOAA-CDR product does not have sufficient resolution to capture the snowline variation consistently. Ross Brown
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sea ice extentmillions of square kmWalter N. Meier, National Snow and Ice Data Center, University of Colorado, Boulder, CO, USANSIDC
NSIDC Sea Ice Index, https://nsidc.org/data/seaice_index/, Fetterer, F., K. Knowles, W. Meier, M. Savoie, and A. K. Windnagel. 2017, updated daily. Sea Ice Index, Version 3. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: https://doi.org/10.7265/N5K072F8.
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regional land ice mass balanceGt water equivalentJason E. Box, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark
Box, J.E., W.T. Colgan, B. Wouters, D.O. Burgess, S. O'Neel, L. Thomson, S. Mernild, Global sea-level contribution from Arctic land ice (1971 to 2017), Environmental Research Letters, ERL-105795, revised 14 Nov, to be part of special issue: Focus on Indicators of Arctic Environmental Variability and Change
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