Monitoring Eco-Hydrological Spring Onset Over Alaska and Northern Canada With Complementary Satellite Remote Sensing Data
More than half of the global land area undergoes seasonal freeze/thaw (FT) transitions in spring. Spatial patterns and timing of spring thawing influence eco-hydrological processes and landscape moisture availability over arctic and boreal ecosystems. The seasonal progression of spring thawing coinc...
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ftnasajpl:oai:trs.jpl.nasa.gov:2014/54423 2023-05-15T14:57:54+02:00 Monitoring Eco-Hydrological Spring Onset Over Alaska and Northern Canada With Complementary Satellite Remote Sensing Data Kim, Youngwook Kimball, John S. Parazoo, Nicholas Xu, Xiaolan Dunbar, R. Scott Colliander, Andreas Reichle, Rolf Derksen, Chris 2022-03-16T02:52:14Z application/pdf http://hdl.handle.net/2014/54423 en_US eng Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2021 IEEE 2021: International Geoscience and Remote Sensing Symposium (41th Annual IGARSS Symposium), Brussels, Belgium, July 11-16, 2021 CL#21-0882 http://hdl.handle.net/2014/54423 Preprint 2022 ftnasajpl 2022-03-20T18:02:40Z More than half of the global land area undergoes seasonal freeze/thaw (FT) transitions in spring. Spatial patterns and timing of spring thawing influence eco-hydrological processes and landscape moisture availability over arctic and boreal ecosystems. The seasonal progression of spring thawing coincides with warmer temperatures, snowmelt, and a rapid increase in soil moisture, which initiates the growing season for ecosystem productivity. In this study, we utilize complementary satellite observations to determine the pattern and order of occurrence in landscape thawing, soil moisture increase, and ecosystem productivity that collectively define the eco-hydrological spring onset across Alaska and Northern Canada. Satellite data utilized include landscape FT status from SMAP and AMSR-2, OCO-2 derived solar-induced chlorophyll fluorescence (GOSIF), and gross primary production (GPP) and soil moisture from SMAP. The resulting spring onset maps showed spring thawing as the precursor to growing season onset, indicated by a rapid rise in available soil moisture and GPP. Our results indicated an average spring transition period of 3±2 (SD) weeks between initial landscape thawing and growing season onset. A rapid increase in soil moisture generally followed landscape thawing but occurred before the subsequent seasonal rise in GPP. Spring onset generally occurred earlier in boreal forest (DOY 102±14) than arctic tundra (DOY 124±22). NASA/JPL Report Arctic Tundra Alaska JPL Technical Report Server Arctic Canada |
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description |
More than half of the global land area undergoes seasonal freeze/thaw (FT) transitions in spring. Spatial patterns and timing of spring thawing influence eco-hydrological processes and landscape moisture availability over arctic and boreal ecosystems. The seasonal progression of spring thawing coincides with warmer temperatures, snowmelt, and a rapid increase in soil moisture, which initiates the growing season for ecosystem productivity. In this study, we utilize complementary satellite observations to determine the pattern and order of occurrence in landscape thawing, soil moisture increase, and ecosystem productivity that collectively define the eco-hydrological spring onset across Alaska and Northern Canada. Satellite data utilized include landscape FT status from SMAP and AMSR-2, OCO-2 derived solar-induced chlorophyll fluorescence (GOSIF), and gross primary production (GPP) and soil moisture from SMAP. The resulting spring onset maps showed spring thawing as the precursor to growing season onset, indicated by a rapid rise in available soil moisture and GPP. Our results indicated an average spring transition period of 3±2 (SD) weeks between initial landscape thawing and growing season onset. A rapid increase in soil moisture generally followed landscape thawing but occurred before the subsequent seasonal rise in GPP. Spring onset generally occurred earlier in boreal forest (DOY 102±14) than arctic tundra (DOY 124±22). NASA/JPL |
format |
Report |
author |
Kim, Youngwook Kimball, John S. Parazoo, Nicholas Xu, Xiaolan Dunbar, R. Scott Colliander, Andreas Reichle, Rolf Derksen, Chris |
spellingShingle |
Kim, Youngwook Kimball, John S. Parazoo, Nicholas Xu, Xiaolan Dunbar, R. Scott Colliander, Andreas Reichle, Rolf Derksen, Chris Monitoring Eco-Hydrological Spring Onset Over Alaska and Northern Canada With Complementary Satellite Remote Sensing Data |
author_facet |
Kim, Youngwook Kimball, John S. Parazoo, Nicholas Xu, Xiaolan Dunbar, R. Scott Colliander, Andreas Reichle, Rolf Derksen, Chris |
author_sort |
Kim, Youngwook |
title |
Monitoring Eco-Hydrological Spring Onset Over Alaska and Northern Canada With Complementary Satellite Remote Sensing Data |
title_short |
Monitoring Eco-Hydrological Spring Onset Over Alaska and Northern Canada With Complementary Satellite Remote Sensing Data |
title_full |
Monitoring Eco-Hydrological Spring Onset Over Alaska and Northern Canada With Complementary Satellite Remote Sensing Data |
title_fullStr |
Monitoring Eco-Hydrological Spring Onset Over Alaska and Northern Canada With Complementary Satellite Remote Sensing Data |
title_full_unstemmed |
Monitoring Eco-Hydrological Spring Onset Over Alaska and Northern Canada With Complementary Satellite Remote Sensing Data |
title_sort |
monitoring eco-hydrological spring onset over alaska and northern canada with complementary satellite remote sensing data |
publisher |
Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2021 |
publishDate |
2022 |
url |
http://hdl.handle.net/2014/54423 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Tundra Alaska |
genre_facet |
Arctic Tundra Alaska |
op_relation |
IEEE 2021: International Geoscience and Remote Sensing Symposium (41th Annual IGARSS Symposium), Brussels, Belgium, July 11-16, 2021 CL#21-0882 http://hdl.handle.net/2014/54423 |
_version_ |
1766330003513933824 |