A complete view of the atmospheric hydrologic cycle

The global atmospheric water transport from the evaporation to the precipitation regions has been traced using Lagrangian trajectories. A matrix has been constructed by selecting various group of trajectories based on their surface starting(evaporation) and ending (precipitation) positions to show t...

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Main Authors: Dey, Dipanjan, Aldama Campino, Aitor, Döös, Kristofer
Format: Text
Language:English
Published: 2021
Subjects:
Online Access:https://doi.org/10.5194/hess-2021-509
https://hess.copernicus.org/preprints/hess-2021-509/
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spelling ftcopernicus:oai:publications.copernicus.org:hessd98214 2023-05-15T16:30:07+02:00 A complete view of the atmospheric hydrologic cycle Dey, Dipanjan Aldama Campino, Aitor Döös, Kristofer 2021-12-01 application/pdf https://doi.org/10.5194/hess-2021-509 https://hess.copernicus.org/preprints/hess-2021-509/ eng eng doi:10.5194/hess-2021-509 https://hess.copernicus.org/preprints/hess-2021-509/ eISSN: 1607-7938 Text 2021 ftcopernicus https://doi.org/10.5194/hess-2021-509 2021-12-06T17:22:31Z The global atmospheric water transport from the evaporation to the precipitation regions has been traced using Lagrangian trajectories. A matrix has been constructed by selecting various group of trajectories based on their surface starting(evaporation) and ending (precipitation) positions to show the connectivity of the atmospheric water transport within and between the three major ocean basins and the global landmass. The analysis reveals that a major portion of the evaporated water precipitates back into the same region, namely 67 % for the Indian, 64 % for the Atlantic, 85 % for the Pacific Ocean and 72 % for the global landmass. The evaporation from the subtropical regions of the Indian, Atlantic and Pacific Oceans is found to be the primary source of atmospheric water for precipitation over the Intertropical Convergence Zone (ITCZ) in the corresponding basins. The evaporated waters from the subtropical and western Indian Ocean were traced as the source for precipitation over the South Asian and Eastern African landmass, while Atlantic Ocean waters are responsible for rainfall over North Asia and Western Africa. Atlantic storm tracks were identified as the carrier of atmospheric water that precipitates over Europe, while the Pacific storm tracks were responsible for North American, eastern Asian and Australian precipitation. The bulk of South and Central American precipitation is found to have its source in the tropical Atlantic Ocean. The recycling of evapotranspirated water from land is pronounced over the western coast of South America, Northeastern Asia, Canada and Greenland. The ocean-to-land and land-to-ocean water transport through the atmosphere was computed to be 2 × 10 9 kg/s and 1 × 10 9 kg/s, respectively. The difference between them (net ocean-to-land transport), i.e. 1 × 10 9 kg/s, is transported to land. This net transport is approximately the same as found in previous Eulerian estimates. Text Greenland Copernicus Publications: E-Journals Canada Greenland Indian Pacific
institution Open Polar
collection Copernicus Publications: E-Journals
op_collection_id ftcopernicus
language English
description The global atmospheric water transport from the evaporation to the precipitation regions has been traced using Lagrangian trajectories. A matrix has been constructed by selecting various group of trajectories based on their surface starting(evaporation) and ending (precipitation) positions to show the connectivity of the atmospheric water transport within and between the three major ocean basins and the global landmass. The analysis reveals that a major portion of the evaporated water precipitates back into the same region, namely 67 % for the Indian, 64 % for the Atlantic, 85 % for the Pacific Ocean and 72 % for the global landmass. The evaporation from the subtropical regions of the Indian, Atlantic and Pacific Oceans is found to be the primary source of atmospheric water for precipitation over the Intertropical Convergence Zone (ITCZ) in the corresponding basins. The evaporated waters from the subtropical and western Indian Ocean were traced as the source for precipitation over the South Asian and Eastern African landmass, while Atlantic Ocean waters are responsible for rainfall over North Asia and Western Africa. Atlantic storm tracks were identified as the carrier of atmospheric water that precipitates over Europe, while the Pacific storm tracks were responsible for North American, eastern Asian and Australian precipitation. The bulk of South and Central American precipitation is found to have its source in the tropical Atlantic Ocean. The recycling of evapotranspirated water from land is pronounced over the western coast of South America, Northeastern Asia, Canada and Greenland. The ocean-to-land and land-to-ocean water transport through the atmosphere was computed to be 2 × 10 9 kg/s and 1 × 10 9 kg/s, respectively. The difference between them (net ocean-to-land transport), i.e. 1 × 10 9 kg/s, is transported to land. This net transport is approximately the same as found in previous Eulerian estimates.
format Text
author Dey, Dipanjan
Aldama Campino, Aitor
Döös, Kristofer
spellingShingle Dey, Dipanjan
Aldama Campino, Aitor
Döös, Kristofer
A complete view of the atmospheric hydrologic cycle
author_facet Dey, Dipanjan
Aldama Campino, Aitor
Döös, Kristofer
author_sort Dey, Dipanjan
title A complete view of the atmospheric hydrologic cycle
title_short A complete view of the atmospheric hydrologic cycle
title_full A complete view of the atmospheric hydrologic cycle
title_fullStr A complete view of the atmospheric hydrologic cycle
title_full_unstemmed A complete view of the atmospheric hydrologic cycle
title_sort complete view of the atmospheric hydrologic cycle
publishDate 2021
url https://doi.org/10.5194/hess-2021-509
https://hess.copernicus.org/preprints/hess-2021-509/
geographic Canada
Greenland
Indian
Pacific
geographic_facet Canada
Greenland
Indian
Pacific
genre Greenland
genre_facet Greenland
op_source eISSN: 1607-7938
op_relation doi:10.5194/hess-2021-509
https://hess.copernicus.org/preprints/hess-2021-509/
op_doi https://doi.org/10.5194/hess-2021-509
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