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

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.

Resources

Name Format Description Link
5 https://daac.ornl.gov%2FABOVE%2Fguides%2FCircumArctic_Trends_Hotspots.html
5 https://doi.org%2F10.3334%2FORNLDAAC%2F2322
5 https://data.ornldaac.earthdata.nasa.gov%2Fprotected%2Fbundle%2FCircumArctic_Trends_Hotspots_2322.zip
5 https://daac.ornl.gov%2FABOVE%2Fguides%2FCircumArctic_Trends_Hotspots_Fig1.jpg
5 https://above.nasa.gov%2F
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2FBrown_permafrost_attributes.pdf
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_9_11_vegetation_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2Fland_cover_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_9_11_thermal_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_6_8_vegetation_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_6_8_moisture_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_3_5_thermal_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_3_5_vegetation_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_3_5_moisture_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_1_12_thermal_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_1_12_vegetation_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_12_2_thermal_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_1_12_moisture_combined_hotspot_legend.txt
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DCircumArctic_Trends_Hotspots_2322%26ac%3Dtrue
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2F1997_2020_9_11_moisture_combined_hotspot_legend.txt
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FCircumArctic_Trends_Hotspots%2Fcomp%2FCircumArctic_Trends_Hotspots.pdf
5 https://search.earthdata.nasa.gov/search?q=CircumArctic_Trends_Hotspots_2322&ac=true
21 https://doi.org/10.3334/ORNLDAAC/2322
57 CircumArctic_Trends_Hotspots_2322.zip https://data.ornldaac.earthdata.nasa.gov/protected/bundle/CircumArctic_Trends_Hotspots_2322.zip
22 CircumArctic_Trends_Hotspots_Fig1.jpg https://daac.ornl.gov/ABOVE/guides/CircumArctic_Trends_Hotspots_Fig1.jpg
5 https://above.nasa.gov/
33 Brown_permafrost_attributes.pdf https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/Brown_permafrost_attributes.pdf
33 CircumArctic_Trends_Hotspots.pdf https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/CircumArctic_Trends_Hotspots.pdf
47 1997_2020_9_11_vegetation_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_9_11_vegetation_combined_hotspot_legend.txt
47 1997_2020_9_11_thermal_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_9_11_thermal_combined_hotspot_legend.txt
47 1997_2020_6_8_vegetation_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_6_8_vegetation_combined_hotspot_legend.txt
47 1997_2020_9_11_moisture_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_9_11_moisture_combined_hotspot_legend.txt
47 1997_2020_3_5_thermal_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_3_5_thermal_combined_hotspot_legend.txt
47 1997_2020_3_5_vegetation_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_3_5_vegetation_combined_hotspot_legend.txt
47 1997_2020_3_5_moisture_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_3_5_moisture_combined_hotspot_legend.txt
47 1997_2020_1_12_thermal_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_1_12_thermal_combined_hotspot_legend.txt
47 1997_2020_1_12_vegetation_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_1_12_vegetation_combined_hotspot_legend.txt
47 1997_2020_12_2_thermal_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_12_2_thermal_combined_hotspot_legend.txt
47 1997_2020_1_12_moisture_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_1_12_moisture_combined_hotspot_legend.txt
47 land_cover_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/land_cover_legend.txt
47 1997_2020_6_8_moisture_combined_hotspot_legend.txt https://data.ornldaac.earthdata.nasa.gov/public/above/CircumArctic_Trends_Hotspots/comp/1997_2020_6_8_moisture_combined_hotspot_legend.txt
5 https://above.nasa.gov
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2883645605-ORNL_CLOUD.iso19115

Tags

  • earth-science-cryospheric-indicators-climate-indicators
  • atmospheric-ocean-indicators-climate-indicators
  • snow-ice
  • normalized-difference-vegetation-index-ndvi
  • earth-science-atmospheric-temperature-atmosphere-surface-temperature-air-temperature
  • earth-science-vegetation-biosphere-vegetation-optical-depth
  • climate-indicators
  • land-surface
  • biosphere
  • surface-water
  • seasonally-frozen-ground
  • atmospheric-water-vapor
  • vegetation-cover
  • earth-science-atmospheric-ocean-indicators-climate-indicators-precipitation-indicators-precipit
  • earth-science-land-surface-agriculture-indicators-climate-indicators-vegetation-cover
  • atmosphere
  • atmospheric-temperature
  • terrestrial-hydrosphere
  • earth-science-surface-water-terrestrial-hydrosphere
  • land-surface-agriculture-indicators
  • earth-science-frozen-ground-land-surface-active-layer
  • vegetation
  • precipitation-trends
  • precipitation-indicators-air-temperature
  • cryospheric-indicators
  • water-vapor-indicators
  • active-layer
  • vegetation-optical-depth
  • surface-temperature
  • earth-science-snow-ice-terrestrial-hydrosphere-snow-cover
  • vegetation-index
  • frozen-ground
  • earth-science-frozen-ground-land-surface-seasonally-frozen-ground
  • snow-cover
  • vapor-pressure
  • earth-science-land-surface-agriculture-indicators-climate-indicators-soil-moisture
  • climate-indicators-soil-moisture
  • earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators-vapor-pressure
  • earth-science-vegetation-biosphere-vegetation-index-normalized-difference-vegetation-index-ndvi

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