Here the potential impact of the stratospheric aerosol geoengineering on the West African Summer Monsoon precipitation and the associated mechanisms are investigated, using climate model simulations from the Geoengineering Large Ensemble project that used stratospheric sulfate aerosols injection to stabilize global mean surface temperature and, also, the interhemispheric and equator‐to‐pole temperature gradients at their 2020 values under RCP8.5 … The main two components of the African Monsoons are the West African Monsoon, which prevails during the Northern Hemisphere Summer (June through September), and the East African Monsoon with rains during spring (MAM) and autumn (OND). If you do not receive an email within 10 minutes, your email address may not be registered, Using simulations from the Geoengineering Large Ensemble project that employed stratospheric sulfate aerosols injection to keep global mean surface temperature and also the interhemispheric and equator‐to‐pole temperature gradients at their 2020 values (present‐day climate) under Representative Concentration Pathway 8.5 scenario, we investigate the potential impact of SAG on the West African Summer Monsoon (WASM) precipitation and the involved physical processes. 1 Shares; 540 Downloads; 6 Citations; Abstract. The West African Sahel is well known for the severe droughts that ravaged this region during the 1970s and 1980s.


Note that under GLENS, the change in rainfall is only significant in the WAR. We found that simulated rainfall in GLENS reasonably reproduces the observed spatial patterns of WASM precipitation, including its characteristic northward jump over the season.We focused our study on three specific regions which are the NSA, the SSA, and the WAR. In this study, future changes in West African summer monsoon (WASM) rainfall variability were investigated using data from two regional climate …
and PaleomagnetismBiological This suggests that SAG deployed to offset all warming would be effective at offsetting the effects of climate change on rainfall in the Sahel regions but that it would be overeffective in Western Africa, turning a modest positive trend into a negative trend twice as large. The Thar Desert and adjoining areas of the northern and central Indian subcontinent heat up considerably during the hot summers. NASA and University of Maryland scientists have found that the African monsoon consists of two distinct seasons. The southwestern summer monsoons occur from July through September. However, in GLENS, relative to the baseline, the WASM rainfall is practically unchanged (0.00 ± 0.10 mm) in the NSA region, but in SSA and WAR regions, rainfall is reduced by 4.06% (0.19 ± 0.22 mm) and 10.87% (0.72 ± 0.27 mm) during the monsoon period, respectively. Atmospheric Chemistry, Observations, and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, USAJohn A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USAAtmospheric Chemistry, Observations, and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, USAJohn A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USAUse the link below to share a full-text version of this article with your friends and colleagues.

Journal of Advances Abrupt decline in the long rains have resulted in droughts over this region.To reduce the vulnerability of the African community to the variations in the strengths of the two monsoons, scientific community needs to improve the reliability of forecasts to unable forward planning. and you may need to create a new Wiley Online Library account.Enter your email address below and we will send you your usernameIf the address matches an existing account you will receive an email with instructions to retrieve your username The precipitation and atmospheric circulation patterns are shown in the adjacent figure.