Asian summer monsoon rainfall predictability: a predictable mode analysis

Verfasser / Beitragende:
[Bin Wang, June-Yi Lee, Baoqiang Xiang]
Ort, Verlag, Jahr:
2015
Enthalten in:
Climate Dynamics, 44/1-2(2015-01-01), 61-74
Format:
Artikel (online)
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024 7 0 |a 10.1007/s00382-014-2218-1  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00382-014-2218-1 
245 0 0 |a Asian summer monsoon rainfall predictability: a predictable mode analysis  |h [Elektronische Daten]  |c [Bin Wang, June-Yi Lee, Baoqiang Xiang] 
520 3 |a To what extent the Asian summer monsoon (ASM) rainfall is predictable has been an important but long-standing issue in climate science. Here we introduce a predictable mode analysis (PMA) method to estimate predictability of the ASM rainfall. The PMA is an integral approach combining empirical analysis, physical interpretation and retrospective prediction. The empirical analysis detects most important modes of variability; the interpretation establishes the physical basis of prediction of the modes; and the retrospective predictions with dynamical models and physics-based empirical (P-E) model are used to identify the "predictable” modes. Potential predictability can then be estimated by the fractional variance accounted for by the "predictable” modes. For the ASM rainfall during June-July-August, we identify four major modes of variability in the domain (20°S-40°N, 40°E-160°E) during 1979-2010: (1) El Niño-La Nina developing mode in central Pacific, (2) Indo-western Pacific monsoon-ocean coupled mode sustained by a positive thermodynamic feedback with the aid of background mean circulation, (3) Indian Ocean dipole mode, and (4) a warming trend mode. We show that these modes can be predicted reasonably well by a set of P-E prediction models as well as coupled models' multi-model ensemble. The P-E and dynamical models have comparable skills and complementary strengths in predicting ASM rainfall. Thus, the four modes may be regarded as "predictable” modes, and about half of the ASM rainfall variability may be predictable. This work not only provides a useful approach for assessing seasonal predictability but also provides P-E prediction tools and a spatial-pattern-bias correction method to improve dynamical predictions. The proposed PMA method can be applied to a broad range of climate predictability and prediction problems. 
540 |a The Author(s), 2014 
690 7 |a Asian summer monsoon rainfall  |2 nationallicence 
690 7 |a Seasonal predictability  |2 nationallicence 
690 7 |a Predictable mode analysis  |2 nationallicence 
690 7 |a ENSO  |2 nationallicence 
690 7 |a Monsoon-ocean coupled mode  |2 nationallicence 
690 7 |a Physics-based empirical prediction  |2 nationallicence 
690 7 |a Multi-model ensemble  |2 nationallicence 
700 1 |a Wang  |D Bin  |u Department of Meteorology and International Pacific Research Center, University of Hawaii, 96822, Honolulu, HI, USA  |4 aut 
700 1 |a Lee  |D June-Yi  |u Institute of Environmental Studies, Pusan National University, 609-735, Busan, Korea  |4 aut 
700 1 |a Xiang  |D Baoqiang  |u Department of Meteorology and International Pacific Research Center, University of Hawaii, 96822, Honolulu, HI, USA  |4 aut 
773 0 |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 44/1-2(2015-01-01), 61-74  |x 0930-7575  |q 44:1-2<61  |1 2015  |2 44  |o 382 
856 4 0 |u https://doi.org/10.1007/s00382-014-2218-1  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00382-014-2218-1  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Wang  |D Bin  |u Department of Meteorology and International Pacific Research Center, University of Hawaii, 96822, Honolulu, HI, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lee  |D June-Yi  |u Institute of Environmental Studies, Pusan National University, 609-735, Busan, Korea  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Xiang  |D Baoqiang  |u Department of Meteorology and International Pacific Research Center, University of Hawaii, 96822, Honolulu, HI, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 44/1-2(2015-01-01), 61-74  |x 0930-7575  |q 44:1-2<61  |1 2015  |2 44  |o 382