Home    |    Contact   |    Chinese   |    CAS
Upcoming Events : The International Training Program on Soil Carbon Cycling in Arid Ecosystems ...
Sensitivity of Asian climate change to radiative forcing during the last millennium in a multi-model analysis
subheading -
release time:2016-07-11 source: browse:

Title

Sensitivity of Asian climate change to radiative forcing during the last millennium in a multi-model analysis

Authors

Shi, ZG; Xu, TT; Wang, HL

Abstract

The outputs of last millennium (A.D. 850-1850) experiments from seven climate models of the Paleoclimate Modeling Intercomparison Project 3, have been used to analyze decadal to centennial climatic variations over Asia, including the Indian monsoon, the East Asian monsoon and the westerly jet. In particular, the differences between the Medieval Warm Period (MWP, A.D. 901-1200) and the Little Ice Age (LIA, A.D. 1551-1850) are focused on. Statistically, significant temperature contrasts between the MWP and LIA are simulated by all of the models, and larger temperature deviations occur during colder periods. Although discrepancies exist, stronger Indian and East Asian summer monsoon circulations, as well as a stronger Asian westerly jet stream in winter, are found during the MWP compared to the LIA, in most of the models. These changes primarily originate from different atmospheric thermal structures over the two periods, which occur in response to the external radiative forcings. However, the monsoon-associated precipitation is quite complicated, with distinctly different patterns simulated among the models. There are phase differences in the multi-decadal variability of precipitation among the models, which consistently fail to detect a weakening in the precipitation at the minima of the radiative forcings. Only limited models are able to simulate the quasi-100-year solar cycles in the changes of precipitation over India and East Asia. Thus, although the climate system is certainly affected by external radiative forcings, our results imply that the natural forcings may not exert such a substantial influence on the Asian monsoon rainfall, or the models may underestimate the response.

Corresponding author

Shi Zhengguo

Volume

138

Issue

 

Page

195-210

Pub year

April, 2016

Publication name

Global and Planetary Change

Details

http://www.sciencedirect.com/science/article/pii/S0921818115300175

Related accessories
Related documents
© 2015 Institute of Earth Environment,CAS
Address:No. 97 Yanxiang Road, Xi'an 710061, Shaanxi, China