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| Titel |
Role of radiatively forced temperature changes in enhanced semi-arid warming in the cold season over east Asia |
| VerfasserIn |
X. Guan, J. Huang, R. Guo, H. Yu, P. Lin, Y. Zhang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 23 ; Nr. 15, no. 23 (2015-12-15), S.13777-13786 |
| Datensatznummer |
250120224
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| Publikation (Nr.) |
 copernicus.org/acp-15-13777-2015.pdf |
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| Zusammenfassung |
| As climate change has occurred over east Asia since the 1950s, intense interest
and debate have arisen concerning the contribution of human activities to the
observed warming in past decades. In this study, we investigate regional
surface temperature change during the boreal cold season using a recently
developed methodology that can successfully identify and separate the
dynamically induced temperature (DIT) and radiatively forced temperature
(RFT) changes in raw surface air temperature (SAT) data. For regional
averages, DIT and RFT contribute 44 and 56 % to the SAT over east
Asia, respectively. The DIT changes dominate the SAT decadal variability and
are mainly determined by internal climate variability, represented by the
North Atlantic Oscillation (NAO), Pacific Decadal Oscillation (PDO), and
Atlantic Multi-decadal Oscillation (AMO). Radiatively forced SAT changes have
made a major contribution to the global-scale warming trend and the
regional-scale enhanced semi-arid warming (ESAW). Such enhanced warming is
also found in radiatively forced daily maximum and minimum SAT. The long-term
global-mean SAT warming trend is mainly related to radiative forcing produced
by global well-mixed greenhouse gases. The regional anthropogenic radiative
forcing, however, caused the enhanced warming in the semi-arid region, which
may be closely associated with local human activities. Finally, the
relationship between the so-called "global warming hiatus" and regional
enhanced warming is discussed. |
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