Model results in NetCDF format of North African vegetation-precipitation in early and mid-Holocene climate simulated by CCSM3-DGVM//
Cobertura |
MEDIAN LATITUDE: 17.500000 * MEDIAN LONGITUDE: 5.000000 * SOUTH-BOUND LATITUDE: 10.000000 * WEST-BOUND LONGITUDE: -20.000000 * NORTH-BOUND LATITUDE: 25.000000 * EAST-BOUND LONGITUDE: 30.000000 |
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Data(s) |
01/06/2015
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Resumo |
The present study analyses the sign, strength, and working mechanism of the vegetation-precipitation feedback over North Africa in middle (6 ka BP) and early Holocene (9 ka BP) simulations using the comprehensive coupled climate-vegetation model CCSM3-DGVM (Community Climate System Model version 3 and a dynamic global vegetation model). The coupled model simulates enhanced summer rainfall and a northward migration of the West African monsoon trough along with an expansion of the vegetation cover for the early and middle Holocene compared to the pre-industrial period. It is shown that dynamic vegetation enhances the orbitally triggered summer precipitation anomaly by approximately 20% in the Sahara-Sahel region (10-25° N, 20° W-30° E) in both the early and mid-Holocene experiments compared to their fixed-vegetation counterparts. The primary vegetation-rainfall feedback identified here operates through surface latent heat flux anomalies by canopy evaporation and transpiration and their effect on the mid-tropospheric African easterly jet, whereas the effects of vegetation changes on surface albedo and local water recycling play a negligible role. Even though CCSM3-DGVM simulates a positive vegetation-precipitation feedback in the North African region, this feedback is not strong enough to produce multiple equilibrium climate-ecosystem states on a regional scale. |
Formato |
text/tab-separated-values, 30 data points |
Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.846576 doi:10.1594/PANGAEA.846576 |
Idioma(s) |
en |
Publicador |
PANGAEA |
Relação |
List of variables used in NetCDF files (URI: http://store.pangaea.de/Publications/Rachmayani_etal_2015/readme_rachmayanietal.pdf) (Readme pdf-format) |
Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
Fonte |
Supplement to: Rachmayani, Rima; Prange, Matthias; Schulz, Michael (2015): North African vegetation-precipitation feedback in early and mid-Holocene climate simulations with CCSM3-DGVM. Climate of the Past, 11(2), 175-185, doi:10.5194/cp-11-175-2015 |
Palavras-Chave | #Center for Marine Environmental Sciences; Description; File format; File name; File size; Integrierte Analyse zwischeneiszeitlicher Klimadynamik; INTERDYNAMIK; MARUM; Model; Sahara-Sahel_region; Uniform resource locator/link to model result file |
Tipo |
Dataset |