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Trends of Thermal, Wetness, and Vegetative Change in the Circumpolar Arctic

Overview

DOIhttps://doi.org/10.3334/ORNLDAAC/2322
Version1
Project
Published2024-02-29
Usage49 downloads

Description

This dataset provides estimates of trends in temperature, moisture, and vegetation changes over the circumpolar Arctic. Time series trends were measured by the Theil-Sen slope and associated p-values for a variety of variables including 2-meter air temperature, precipitation, soil moisture, non-frozen season days, permafrost active layer thickness, snow cover, vapor pressure deficit, land surface water fraction, normalized difference vegetation index (NDVI), and vegetation optical depth. Trends were measured annually and over specific seasons of spring (March to May), summer (June to August), autumn (September to November) and winter (December to February), and for the 1980-2020 and 1997-2020 time periods, depending on the variable and original data availability. Emerging hotspots of change were identified for the same variables and seasons, but only over the 1997-2020 period. In addition, a multivariate ranking was used to create combined hotspot layers to show areas of substantial changes in the thermal environment, moisture, and vegetation; these themes reflect landscape changes considered to be detrimental (e.g., a threat) to ecosystems and human populations. Ancillary files provide the boundaries of study regions, Brown permafrost regions, and a land cover product. The data are provided in cloud optimized GeoTIFF (COG) and shapefile formats.

Science Keywords

  • CLIMATE INDICATORS
  • LAND SURFACE/AGRICULTURE INDICATORS
  • SOIL MOISTURE
  • TERRESTRIAL HYDROSPHERE
  • SNOW/ICE
  • SNOW COVER
  • LAND SURFACE
  • FROZEN GROUND
  • SEASONALLY FROZEN GROUND
  • ATMOSPHERE
  • ATMOSPHERIC TEMPERATURE
  • SURFACE TEMPERATURE
  • AIR TEMPERATURE
  • BIOSPHERE
  • VEGETATION
  • VEGETATION INDEX
  • NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI)
  • LAND SURFACE
  • FROZEN GROUND
  • ACTIVE LAYER
  • ATMOSPHERE
  • ATMOSPHERIC WATER VAPOR
  • WATER VAPOR INDICATORS
  • VAPOR PRESSURE
  • TERRESTRIAL HYDROSPHERE
  • SURFACE WATER
  • CLIMATE INDICATORS
  • CRYOSPHERIC INDICATORS
  • CLIMATE INDICATORS
  • LAND SURFACE/AGRICULTURE INDICATORS
  • VEGETATION COVER
  • BIOSPHERE
  • VEGETATION
  • VEGETATION OPTICAL DEPTH
  • CLIMATE INDICATORS
  • ATMOSPHERIC/OCEAN INDICATORS
  • PRECIPITATION INDICATORS
  • PRECIPITATION TRENDS

Data Use and Citation

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Crosscite Citation Formatter
Watts, J.D., S. Potter, B.M. Rogers, A-M. Virkkala, G. Fiske, K. Arndt, A. Burrell, S. Natali, K. Butler, B. Gerlt, J. Grayson, T.A. Shestakova, J. Du, and Y. Kim. 2023. Trends of Thermal, Wetness, and Vegetative Change in the Circumpolar Arctic. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2322

This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use Policy. See our Data Use and Citation Policy for more information.

Data Files

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Companion Files

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Dataset has 15 companion files.

  • 1997_2020_1_12_vegetation_combined_hotspot_legend.txt
  • 1997_2020_6_8_vegetation_combined_hotspot_legend.txt
  • 1997_2020_3_5_thermal_combined_hotspot_legend.txt
  • 1997_2020_6_8_moisture_combined_hotspot_legend.txt
  • 1997_2020_3_5_vegetation_combined_hotspot_legend.txt
  • 1997_2020_9_11_moisture_combined_hotspot_legend.txt
  • Brown_permafrost_attributes.pdf
  • 1997_2020_3_5_moisture_combined_hotspot_legend.txt
  • 1997_2020_1_12_thermal_combined_hotspot_legend.txt
  • 1997_2020_12_2_thermal_combined_hotspot_legend.txt
  • land_cover_legend.txt
  • 1997_2020_9_11_thermal_combined_hotspot_legend.txt
  • CircumArctic_Trends_Hotspots.pdf
  • 1997_2020_9_11_vegetation_combined_hotspot_legend.txt
  • 1997_2020_1_12_moisture_combined_hotspot_legend.txt