DOI: 10.1016/j.gloplacha.2015.12.011
论文题名: The Caspian Sea-Hindu Kush Index (CasHKI): A regulatory factor for dust activity over southwest Asia
作者: Kaskaoutis D.G. ; Houssos E.E. ; Rashki A. ; Francois P. ; Legrand M. ; Goto D. ; Bartzokas A. ; Kambezidis H.D. ; Takemura T.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2016
卷: 137 起始页码: 10
结束页码: 23
语种: 英语
英文关键词: CasHKI
; Dust modulation
; Monsoon
; MSLP anomalies
; Remote sensing
; Southwest Asia
Scopus关键词: Atmospheric aerosols
; Atmospheric thermodynamics
; Modulation
; Rain
; Remote sensing
; Satellite imagery
; Sea level
; Aerosol optical depths
; CasHKI
; Mean sea level pressures
; Monsoon
; MSLP anomalies
; Satellite observations
; Satellite remote sensing
; Southwest Asia
; Dust
英文摘要: This work investigates the modulation in dust activity over southwest (SW) Asia attributed to changes in the mean sea level pressure (MSLP) between the Caspian Sea (CS) and Hindu Kush (HK) during the summer months (June-July-August-September, JJAS) of the period 2000-2014. The MSLP anomalies obtained via NCEP/NCAR re-analysis are evaluated via a new climatology index, the Caspian Sea-Hindu Kush Index (CasHKI), which is defined as CasHKI=MSLPanom.CS-MSLPanom.HK, over specific domains taken over the CS and HK. The changes in CasHKI intensity are examined against dust activity and rainfall distributions over south Asia. The satellite remote sensing (Meteosat, OMI, MODIS) analyses show that high CasHKI values corresponding to enhanced pressure gradient between the CS and the HK, are associated with intensification of northerly winds, increased dust emissions and transportation over SW Asia and north Arabian Sea. In contrast, variations in CasHKI intensity do not seem to have a significant effect on the Indian summer monsoon. Only a slight decrease of precipitation over the southern Indian peninsula and the neighboring oceanic areas and an increase of precipitation along the Ganges Basin and Himalayan range are found to be related to high CasHKI values. Model (MIROC-SPRINTARS) simulations of dust concentration and dust AOD (Aerosol Optical Depth) over SW Asia are consistent with the satellite observations, highlighting for the first time the modulation of the SW Asian dust activity by CasHKI. © 2015 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84951180375&doi=10.1016%2fj.gloplacha.2015.12.011&partnerID=40&md5=ee7cb5527c561e201837f933861a7541
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11711
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
There are no files associated with this item.
作者单位: School of Natural Sciences, Shiv Nadar University, Tehsil Dadri, India
Recommended Citation:
Kaskaoutis D.G.,Houssos E.E.,Rashki A.,et al. The Caspian Sea-Hindu Kush Index (CasHKI): A regulatory factor for dust activity over southwest Asia[J]. Global and Planetary Change,2016-01-01,137.