Comparative evaluation of performances of two versions of NCEP climate forecast system in predicting Indian summer monsoon rainfall

• Autorzy: Acharya N. , Kulkarni M. , Mohanty U. , Singh A.

Identyfikatory

DOI

10.2478/s11600-013-0145-x

• Języki publikacji: EN

Abstrakty

EN

The operational prediction of climatic variables in monthly-toseasonal scales has been issued by National Centers for Environmental Prediction (NCEP) through Climate Forecast System model (CFSv1) since 2004. After incorporating significant changes, a new version of this model (CFSv2) was released in 2011. The present study is based on the comparative evaluation of performances of CFSv2 and CFSv1 for the southwest monsoon season (June-July-August-September, JJAS) over India with May initial condition during 1982-2009. It was observed that CFSv2 has improved over CFSv1 in simulating the observed monsoon rainfall climatology and inter annual variability. The movement of the cell of Walker circulation in years of excessive and deficient rainfall is better captured in CFSv2, as well. The observed teleconnection pattern between ISMR-sea surface temperature (SST) is also better captured in CFSv2. The overall results suggest that the changes incorporated in CFSv1 through the development of CFSv2 have resulted in an improved prediction of ISMR.21

Słowa kluczowe

EN

monsoon rainfall; CFSv2; CFSv1; monsoon indices; prediction

PL

CFSv2; CFSv1; wskaźniki monsunowe; przewidywania

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2014
• Tom: Vol. 62, no. 1
• Strony: 199--219
• Opis fizyczny: Bibliogr. 37 poz.

Twórcy

autor

Acharya N.

• Center for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, India;

autor

Kulkarni M.

• Statistical-Research, Skymet Weather Services Pvt. Ltd., Noida, India

autor

Mohanty U.

• Center for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, India

autor

Singh A.

• Center for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, India

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