Amplification of surface temperature trends and variability in thetropical atmosphere
The month-to-month variability of tropical temperatures is larger in the troposphere than at the Earth's surface. This amplification behavior is similar in a range of observations and climate model simulations, and is consistent with basic theory. On multi-decadal timescales, tropospheric amplification of surface warming is a robust feature of model simulations, but occurs in only one observational dataset. Other observations show weak or even negative amplification. These results suggest that either different physical mechanisms control amplification processes on monthly and decadal timescales, and models fail to capture such behavior, or (more plausibly) that residual errors in several observational datasets used here affect their representation of long-term trends.
- Research Organization:
- OLLABORATION - LLNL
- Sponsoring Organization:
- USDOE Director, Office of Science
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 881407
- Report Number(s):
- LBNL-58623; SCEHDK; R&D Project: K11505; TRN: US200612%%834
- Journal Information:
- Science, Vol. 309, Issue 5740; Related Information: Journal Publication Date: 09/02/2005; ISSN 0193-4511
- Country of Publication:
- United States
- Language:
- English
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