Land-atmosphere interaction patterns in southeastern South America using satellite products and climate models
In regions of strong Land-Atmosphere (L-A) interaction, soil moisture (SM) conditions can impact the atmosphere through modulating the land surface fluxes. The importance of the identification of L-A interaction regions lies in the potential improvement of the weather/seasonal forecast and the bette...
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todo:paper_15698432_v64_n_p96_Spennemann2023-10-03T16:26:47Z Land-atmosphere interaction patterns in southeastern South America using satellite products and climate models Spennemann, P.C. Salvia, M. Ruscica, R.C. Sörensson, A.A. Grings, F. Karszenbaum, H. Climate modelling Land surface temperature Land-atmosphere interaction Satellite products Soil moisture Southeastern South America air-soil interaction climate modeling hot spot MODIS remote sensing satellite data soil moisture surface flux surface temperature Argentina In regions of strong Land-Atmosphere (L-A) interaction, soil moisture (SM) conditions can impact the atmosphere through modulating the land surface fluxes. The importance of the identification of L-A interaction regions lies in the potential improvement of the weather/seasonal forecast and the better understanding of the physical mechanisms involved. This study aims to compare the terrestrial segment of the L-A interaction from satellite products and climate models, motivated by previous modeling studies pointing out southeastern South America (SESA) as a L-A hotspot during austral summer. In addition, the L-A interaction under dry or wet anomalous conditions over SESA is analyzed. To identify L-A hotspots the AMSRE-LPRM SM and MODIS land surface temperature products; coupled climate models and uncoupled land surface models were used. SESA highlights as a strong L-A interaction hotspot when employing different metrics, temporal scales and independent datasets, showing consistency between models and satellite estimations. Both AMSRE-LPRM bands (X and C) are consistent showing a strong L-A interaction hotspot over the Pampas ecoregion. Intensification and a larger spatial extent of the L-A interaction for dry summers was observed in both satellite products and models compared to wet summers. These results, which were derived from measured physical variables, are encouraging and promising for future studies analyzing L-A interactions. L-A interaction analysis is proposed here as a meeting point between remote sensing and climate modelling communities of Argentina, within a region with the highest agricultural and livestock production of the continent, but with an important lack of in-situ SM observations. © 2017 Elsevier B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15698432_v64_n_p96_Spennemann |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Climate modelling Land surface temperature Land-atmosphere interaction Satellite products Soil moisture Southeastern South America air-soil interaction climate modeling hot spot MODIS remote sensing satellite data soil moisture surface flux surface temperature Argentina |
| spellingShingle |
Climate modelling Land surface temperature Land-atmosphere interaction Satellite products Soil moisture Southeastern South America air-soil interaction climate modeling hot spot MODIS remote sensing satellite data soil moisture surface flux surface temperature Argentina Spennemann, P.C. Salvia, M. Ruscica, R.C. Sörensson, A.A. Grings, F. Karszenbaum, H. Land-atmosphere interaction patterns in southeastern South America using satellite products and climate models |
| topic_facet |
Climate modelling Land surface temperature Land-atmosphere interaction Satellite products Soil moisture Southeastern South America air-soil interaction climate modeling hot spot MODIS remote sensing satellite data soil moisture surface flux surface temperature Argentina |
| description |
In regions of strong Land-Atmosphere (L-A) interaction, soil moisture (SM) conditions can impact the atmosphere through modulating the land surface fluxes. The importance of the identification of L-A interaction regions lies in the potential improvement of the weather/seasonal forecast and the better understanding of the physical mechanisms involved. This study aims to compare the terrestrial segment of the L-A interaction from satellite products and climate models, motivated by previous modeling studies pointing out southeastern South America (SESA) as a L-A hotspot during austral summer. In addition, the L-A interaction under dry or wet anomalous conditions over SESA is analyzed. To identify L-A hotspots the AMSRE-LPRM SM and MODIS land surface temperature products; coupled climate models and uncoupled land surface models were used. SESA highlights as a strong L-A interaction hotspot when employing different metrics, temporal scales and independent datasets, showing consistency between models and satellite estimations. Both AMSRE-LPRM bands (X and C) are consistent showing a strong L-A interaction hotspot over the Pampas ecoregion. Intensification and a larger spatial extent of the L-A interaction for dry summers was observed in both satellite products and models compared to wet summers. These results, which were derived from measured physical variables, are encouraging and promising for future studies analyzing L-A interactions. L-A interaction analysis is proposed here as a meeting point between remote sensing and climate modelling communities of Argentina, within a region with the highest agricultural and livestock production of the continent, but with an important lack of in-situ SM observations. © 2017 Elsevier B.V. |
| format |
JOUR |
| author |
Spennemann, P.C. Salvia, M. Ruscica, R.C. Sörensson, A.A. Grings, F. Karszenbaum, H. |
| author_facet |
Spennemann, P.C. Salvia, M. Ruscica, R.C. Sörensson, A.A. Grings, F. Karszenbaum, H. |
| author_sort |
Spennemann, P.C. |
| title |
Land-atmosphere interaction patterns in southeastern South America using satellite products and climate models |
| title_short |
Land-atmosphere interaction patterns in southeastern South America using satellite products and climate models |
| title_full |
Land-atmosphere interaction patterns in southeastern South America using satellite products and climate models |
| title_fullStr |
Land-atmosphere interaction patterns in southeastern South America using satellite products and climate models |
| title_full_unstemmed |
Land-atmosphere interaction patterns in southeastern South America using satellite products and climate models |
| title_sort |
land-atmosphere interaction patterns in southeastern south america using satellite products and climate models |
| url |
http://hdl.handle.net/20.500.12110/paper_15698432_v64_n_p96_Spennemann |
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1807316161427144704 |