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Variability of Indian summer monsoon in a new upper tropospheric humidity data set
Met Office Hadley Centre, Exeter.
Met Office Hadley Centre, Exeter.
LuleƄ University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.ORCID iD: 0000-0001-6389-1160
Canadian Centre for Climate Modelling and Analysis, University of Victoria.
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2010 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 37, no 5, L05705- p.Article in journal (Refereed) Published
Abstract [en]

Using a new data set we demonstrate the variability of upper troposphere humidity (UTH) associated with the Indian Summer Monsoon (ISM). The main advantage of the new data set is its all-sky representation which is essential to capture the full variability of humidity even in cloudy areas. We show that UTH undergoes significant variations during the active/break phases of the monsoon and discuss the mechanisms. The interannual variations of monsoon are also well reflected in the UTH. A preliminary investigation into the cause of the 2009 monsoon failure reveals anomalous subsidence and suppressed convection over the monsoon region due to anomalous warm conditions in the equatorial Pacific throughout the summer. The large scale drying of the upper troposphere may also have contributed to a negative feedback in suppressing convection. Citation: Xavier, P. K., V. O. John, S. A. Buehler, R. S. Ajayamohan, and S. Sijikumar (2010), Variability of Indian summer monsoon in a new upper tropospheric humidity data set

Place, publisher, year, edition, pages
2010. Vol. 37, no 5, L05705- p.
National Category
Aerospace Engineering
Research subject
Space Technology
Identifiers
URN: urn:nbn:se:ltu:diva-13114DOI: 10.1029/2009GL041861Local ID: c4a1d0a0-3355-11df-b933-000ea68e967bOAI: oai:DiVA.org:ltu-13114DiVA: diva2:986065
Note
Validerad; 2010; 20100319 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-21Bibliographically approved

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