Changes in surface air temperature over China under the 1.5 and 2.0 °C global warming targets

This study investigated the projected changes in the annual mean surface air temperature (SAT) over China under the 1.5 and 2.0 °C targets, by analyzing the outputs from 22 models of the Coupled Model Intercomparison Project Phase 5. Under the 1.5 °C target, the scope of changes in the average SAT o...

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Bibliographic Details
Main Authors: Yuan-Hai Fu, Ri-Yu Lu, Dong Guo
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2018-06-01
Series:Advances in Climate Change Research
Online Access:http://www.sciencedirect.com/science/article/pii/S1674927817301156
Description
Summary:This study investigated the projected changes in the annual mean surface air temperature (SAT) over China under the 1.5 and 2.0 °C targets, by analyzing the outputs from 22 models of the Coupled Model Intercomparison Project Phase 5. Under the 1.5 °C target, the scope of changes in the average SAT over China is quite narrow and has the largest probability to increase by 1.7–2.0 °C under the various RCP pathways, although the time of occurrence of the 1.5 °C target has a large spread of 40–60 years. Similarly, the models consistently show that the average SAT over China would most likely increase by 2.4–2.7 °C under the 2.0 °C target. Furthermore, the warming shows a clear spatial distinction over China: being stronger in the northwest part and weaker in the southeast part. Under all RCP pathways, the SAT over the northwest part would increase by 1.9–2.1 °C for the 1.5 °C target, which is much stronger than the SAT increase over the southeast part (1.3–1.5 °C). A similar spatial pattern appears for the 2.0 °C target. Keywords: Temperature, Warming, 1.5 °C target, 2.0 °C target, China
ISSN:1674-9278