Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E
High latitude regions are undergoing significant climate-related change and represent an integral component of the Earth’s climate system. Near-surface vapor pressure deficit, soil temperature, and soil moisture are essential state variables for monitoring high latitude climate and estimating the re...
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ftunivmontana:oai:scholarworks.umt.edu:etd-1880 2023-07-16T03:56:35+02:00 Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E Jones, Lucas Alan 2007-01-01T08:00:00Z application/pdf https://scholarworks.umt.edu/etd/861 https://scholarworks.umt.edu/context/etd/article/1880/viewcontent/msthesis_laj_final.pdf unknown University of Montana https://scholarworks.umt.edu/etd/861 https://scholarworks.umt.edu/context/etd/article/1880/viewcontent/msthesis_laj_final.pdf ©2007 Lucas Alan Jones Graduate Student Theses, Dissertations, & Professional Papers Arctic tundra Boreal forest carbon and water cycles ecological processes hydrometeorology land surface processes microwave remote sensing remote sensing of ecosystems soil moisture soil temperature thesis 2007 ftunivmontana 2023-06-27T22:39:25Z High latitude regions are undergoing significant climate-related change and represent an integral component of the Earth’s climate system. Near-surface vapor pressure deficit, soil temperature, and soil moisture are essential state variables for monitoring high latitude climate and estimating the response of terrestrial ecosystems to climate change. Methods are developed and evaluated to retrieve surface soil temperature, daily maximum/minimum air temperature, and land surface wetness information from the EOS Advanced Microwave Scanning Radiometer (AMSR-E) on the Aqua satellite for eight Boreal forest and Arctic tundra biophysical monitoring sites across Alaska and northern Canada. Daily vapor pressure deficit is determined by employing AMSR-E daily maximum/minimum air temperature retrievals. The seasonal pattern of microwave emission and relative accuracy of the estimated land surface state are influenced strongly by landscape properties including the presence of open water, vegetation type and seasonal phenology, snow cover and freeze-thaw transitions. Daily maximum/minimum air temperature is retrieved with RMSEs of 2.88 K and 2.31 K, respectively. Soil temperature is retrieved with RMSE of 3.1 K. Vapor pressure deficit (VPD) is retrieved to within 427.9 Pa using thermal information from AMSR-E. AMSR-E thermal information imparted 27% of the overall error in VPD estimation with the remaining error attributable to underlying algorithm assumptions. Land surface wetness information derived from AMSR-E corresponded with soil moisture observations and simple soil moisture models at locations with tundra, grassland, and mixed -forest/cropland land covers (r = 0.49 to r = 0.76). AMSR-E 6.9 GHz land surface wetness showed little correspondence to soil moisture observation or model estimates at locations with > 20% open water and > 5 m2 m-2 Leaf Area Index, despite efforts to remove the impact of open water and vegetation biomass. Additional information on open water fraction and vegetation phenology derived from ... Thesis Arctic Climate change Tundra Alaska University of Montana: ScholarWorks Arctic Canada |
institution |
Open Polar |
collection |
University of Montana: ScholarWorks |
op_collection_id |
ftunivmontana |
language |
unknown |
topic |
Arctic tundra Boreal forest carbon and water cycles ecological processes hydrometeorology land surface processes microwave remote sensing remote sensing of ecosystems soil moisture soil temperature |
spellingShingle |
Arctic tundra Boreal forest carbon and water cycles ecological processes hydrometeorology land surface processes microwave remote sensing remote sensing of ecosystems soil moisture soil temperature Jones, Lucas Alan Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E |
topic_facet |
Arctic tundra Boreal forest carbon and water cycles ecological processes hydrometeorology land surface processes microwave remote sensing remote sensing of ecosystems soil moisture soil temperature |
description |
High latitude regions are undergoing significant climate-related change and represent an integral component of the Earth’s climate system. Near-surface vapor pressure deficit, soil temperature, and soil moisture are essential state variables for monitoring high latitude climate and estimating the response of terrestrial ecosystems to climate change. Methods are developed and evaluated to retrieve surface soil temperature, daily maximum/minimum air temperature, and land surface wetness information from the EOS Advanced Microwave Scanning Radiometer (AMSR-E) on the Aqua satellite for eight Boreal forest and Arctic tundra biophysical monitoring sites across Alaska and northern Canada. Daily vapor pressure deficit is determined by employing AMSR-E daily maximum/minimum air temperature retrievals. The seasonal pattern of microwave emission and relative accuracy of the estimated land surface state are influenced strongly by landscape properties including the presence of open water, vegetation type and seasonal phenology, snow cover and freeze-thaw transitions. Daily maximum/minimum air temperature is retrieved with RMSEs of 2.88 K and 2.31 K, respectively. Soil temperature is retrieved with RMSE of 3.1 K. Vapor pressure deficit (VPD) is retrieved to within 427.9 Pa using thermal information from AMSR-E. AMSR-E thermal information imparted 27% of the overall error in VPD estimation with the remaining error attributable to underlying algorithm assumptions. Land surface wetness information derived from AMSR-E corresponded with soil moisture observations and simple soil moisture models at locations with tundra, grassland, and mixed -forest/cropland land covers (r = 0.49 to r = 0.76). AMSR-E 6.9 GHz land surface wetness showed little correspondence to soil moisture observation or model estimates at locations with > 20% open water and > 5 m2 m-2 Leaf Area Index, despite efforts to remove the impact of open water and vegetation biomass. Additional information on open water fraction and vegetation phenology derived from ... |
format |
Thesis |
author |
Jones, Lucas Alan |
author_facet |
Jones, Lucas Alan |
author_sort |
Jones, Lucas Alan |
title |
Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E |
title_short |
Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E |
title_full |
Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E |
title_fullStr |
Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E |
title_full_unstemmed |
Satellite Microwave Remote Sensing of Boreal-Arctic Land Surface State and Meteorology from AMSR-E |
title_sort |
satellite microwave remote sensing of boreal-arctic land surface state and meteorology from amsr-e |
publisher |
University of Montana |
publishDate |
2007 |
url |
https://scholarworks.umt.edu/etd/861 https://scholarworks.umt.edu/context/etd/article/1880/viewcontent/msthesis_laj_final.pdf |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Climate change Tundra Alaska |
genre_facet |
Arctic Climate change Tundra Alaska |
op_source |
Graduate Student Theses, Dissertations, & Professional Papers |
op_relation |
https://scholarworks.umt.edu/etd/861 https://scholarworks.umt.edu/context/etd/article/1880/viewcontent/msthesis_laj_final.pdf |
op_rights |
©2007 Lucas Alan Jones |
_version_ |
1771543004829450240 |