TY - JOUR
T1 - Positive response of Indian summer rainfall to Middle East dust
AU - Jin, Qinjian
AU - Wei, Jiangfeng
AU - Yang, Zong-Liang
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was funded by the Dust Storms and Climate Change project of King Abdullah University of Science and Technology (KAUST). The authors wish to thank Patricia Bobeck for proofreading.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2014/6/2
Y1 - 2014/6/2
N2 - Using observational and reanalyses data, we investigated the impact of dust aerosols over the Middle East and the Arabian Sea (AS) on the Indian summer monsoon (ISM) rainfall. Satellite and aerosol reanalysis data show extremely heavy aerosol loading, mainly mineral dust, over the Middle East and AS during the ISM season. Multivariate empirical orthogonal function analyses suggest an aerosol-monsoon connection. This connection may be attributed to dust-induced atmospheric heating centered over the Iranian Plateau (IP), which enhances the meridional thermal contrast and strengthens the ISM circulation and rainfall. The enhanced circulation further transports more dust to the AS and IP, heating the atmosphere (positive feedback). The aerosols over the AS and the Arabian Peninsula have a significant correlation with rainfall over central and eastern India about 2 weeks later. This finding highlights the nonlocal radiative effect of dust on the ISM circulation and rainfall and may improve ISM rainfall forecasts. © 2014. American Geophysical Union. All Rights Reserved.
AB - Using observational and reanalyses data, we investigated the impact of dust aerosols over the Middle East and the Arabian Sea (AS) on the Indian summer monsoon (ISM) rainfall. Satellite and aerosol reanalysis data show extremely heavy aerosol loading, mainly mineral dust, over the Middle East and AS during the ISM season. Multivariate empirical orthogonal function analyses suggest an aerosol-monsoon connection. This connection may be attributed to dust-induced atmospheric heating centered over the Iranian Plateau (IP), which enhances the meridional thermal contrast and strengthens the ISM circulation and rainfall. The enhanced circulation further transports more dust to the AS and IP, heating the atmosphere (positive feedback). The aerosols over the AS and the Arabian Peninsula have a significant correlation with rainfall over central and eastern India about 2 weeks later. This finding highlights the nonlocal radiative effect of dust on the ISM circulation and rainfall and may improve ISM rainfall forecasts. © 2014. American Geophysical Union. All Rights Reserved.
UR - http://hdl.handle.net/10754/599344
UR - http://doi.wiley.com/10.1002/2014GL059980
UR - http://www.scopus.com/inward/record.url?scp=84901736109&partnerID=8YFLogxK
U2 - 10.1002/2014GL059980
DO - 10.1002/2014GL059980
M3 - Article
SN - 0094-8276
VL - 41
SP - 4068
EP - 4074
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 11
ER -