On the hydrological cycle under paleoclimatic conditions as derived from AGCM simulations
The atmospheric hydrological cycle is compared for different time slices of the late Quaternary. Simulations have been conducted with an atmospheric circulation model at T42 resolution, and we have performed a global evaluation of the atmospheric water vapor transport. The water export from the Atla...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.25.2907 2023-05-15T16:40:57+02:00 On the hydrological cycle under paleoclimatic conditions as derived from AGCM simulations Gerrit Lohmann Max-Planck-Institute Gerrit Lohmann Stephan Lorenz The Pennsylvania State University CiteSeerX Archives 2000 application/postscript http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.25.2907 http://www.mpimet.mpg.de/~lohmann.gerrit/./PSFILES/Water_pal_agu.ps en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.25.2907 http://www.mpimet.mpg.de/~lohmann.gerrit/./PSFILES/Water_pal_agu.ps Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.mpimet.mpg.de/~lohmann.gerrit/./PSFILES/Water_pal_agu.ps text 2000 ftciteseerx 2016-01-07T19:40:09Z The atmospheric hydrological cycle is compared for different time slices of the late Quaternary. Simulations have been conducted with an atmospheric circulation model at T42 resolution, and we have performed a global evaluation of the atmospheric water vapor transport. The water export from the Atlantic catchment area, important for driving the large-scale thermohaline ocean circulation, is analyzed in detail. For the Last Glacial Maximum (LGM), we examine the model's sensitivity with respect to tropical cooling relative to the CLIMAP reconstruction which is motivated by recent data. We find that the LGM experiment with tropical cooling is in better agreement with proxy data available. Our experiments indicate that the water vapor transport is strongly affected by three mechanisms: continental drying, eddy moisture transport, and changes in the tropical circulation. Except for the continental drying and the blocking effect of the Laurentide ice sheet, the hydrological cycle is substancially different for both LGM experiments. We find that the hydrological system is rather sensitive to tropical temperature change which is important to understand paleoclimate and future climate changes. Text Ice Sheet Unknown |
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The atmospheric hydrological cycle is compared for different time slices of the late Quaternary. Simulations have been conducted with an atmospheric circulation model at T42 resolution, and we have performed a global evaluation of the atmospheric water vapor transport. The water export from the Atlantic catchment area, important for driving the large-scale thermohaline ocean circulation, is analyzed in detail. For the Last Glacial Maximum (LGM), we examine the model's sensitivity with respect to tropical cooling relative to the CLIMAP reconstruction which is motivated by recent data. We find that the LGM experiment with tropical cooling is in better agreement with proxy data available. Our experiments indicate that the water vapor transport is strongly affected by three mechanisms: continental drying, eddy moisture transport, and changes in the tropical circulation. Except for the continental drying and the blocking effect of the Laurentide ice sheet, the hydrological cycle is substancially different for both LGM experiments. We find that the hydrological system is rather sensitive to tropical temperature change which is important to understand paleoclimate and future climate changes. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Gerrit Lohmann Max-Planck-Institute Gerrit Lohmann Stephan Lorenz |
spellingShingle |
Gerrit Lohmann Max-Planck-Institute Gerrit Lohmann Stephan Lorenz On the hydrological cycle under paleoclimatic conditions as derived from AGCM simulations |
author_facet |
Gerrit Lohmann Max-Planck-Institute Gerrit Lohmann Stephan Lorenz |
author_sort |
Gerrit Lohmann Max-Planck-Institute |
title |
On the hydrological cycle under paleoclimatic conditions as derived from AGCM simulations |
title_short |
On the hydrological cycle under paleoclimatic conditions as derived from AGCM simulations |
title_full |
On the hydrological cycle under paleoclimatic conditions as derived from AGCM simulations |
title_fullStr |
On the hydrological cycle under paleoclimatic conditions as derived from AGCM simulations |
title_full_unstemmed |
On the hydrological cycle under paleoclimatic conditions as derived from AGCM simulations |
title_sort |
on the hydrological cycle under paleoclimatic conditions as derived from agcm simulations |
publishDate |
2000 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.25.2907 http://www.mpimet.mpg.de/~lohmann.gerrit/./PSFILES/Water_pal_agu.ps |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
http://www.mpimet.mpg.de/~lohmann.gerrit/./PSFILES/Water_pal_agu.ps |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.25.2907 http://www.mpimet.mpg.de/~lohmann.gerrit/./PSFILES/Water_pal_agu.ps |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766031391002198016 |