Advances in Atmospheric Sciences

, Volume 30, Issue 3, pp 766–778

Precipitation-surface temperature relationship in the IPCC CMIP5 models

  • Renguang Wu (吴仁广)
  • Jiepeng Chen (陈洁鹏)
  • Zhiping Wen (温之平)
Article

DOI: 10.1007/s00376-012-2130-8

Cite this article as:
Wu, R., Chen, J. & Wen, Z. Adv. Atmos. Sci. (2013) 30: 766. doi:10.1007/s00376-012-2130-8

Abstract

Precipitation and surface temperature are two important quantities whose variations are closely related through various physical processes. In the present study, we evaluated the precipitation-surface temperature (P-T) relationship in 17 climate models involved in the Coupled Model Intercomparison Project Phase 5 (CMIP5) for the IPCC Assessment Report version 5. Most models performed reasonably well at simulating the large-scale features of the P-T correlation distribution. Based on the pattern correlation of the P-T correlation distribution, the models performed better in November-December-January-February-March (NDJFM) than in May-June-July-August-September (MJJAS) except for the mid-latitudes of the Northern Hemisphere, and the performance was generally better over the land than over the ocean. Seasonal dependence was more obvious over the land than over the ocean and was more obvious over the mid- and high-latitudes than over the tropics. All of the models appear to have had difficulty capturing the P-T correlation distribution over the mid-latitudes of the Southern Hemisphere in MJJAS. The spatial variability of the P-T correlation in the models was overestimated compared to observations. This overestimation tended to be larger over the land than over the ocean and larger over the mid- and high-latitudes than over the tropics. Based on analyses of selected model ensemble simulations, the spread of the P-T correlation among the ensemble members appears to have been small. While the performance in the P-T correlation provides a general direction for future improvement of climate models, the specific reasons for the discrepancies between models and observations remain to be revealed with detailed and comprehensive evaluations in various aspects.

Key words

precipitation-surface temperature relationshipCMIP5 modelsseasonal dependence

Copyright information

© Chinese National Committee for International Association of Meteorology and Atmospheric Sciences, Institute of Atmospheric Physics, Science Press and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Renguang Wu (吴仁广)
    • 1
  • Jiepeng Chen (陈洁鹏)
    • 2
  • Zhiping Wen (温之平)
    • 2
  1. 1.Institute of Space and Earth Information ScienceThe Chinese University of Hong KongHong KongChina
  2. 2.Center for Monsoon and Environment Research/Department of Atmospheric SciencesSun Yat-Sen UniversityGuangzhouChina