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  Impacts of Indian Ocean dipole-like SST on rice yield anomalies in Jiangsu Province

Xu, J., Koldunov, N., Xu, M., Zhu, X., Fraedrich, K., Jiang, X., et al. (2021). Impacts of Indian Ocean dipole-like SST on rice yield anomalies in Jiangsu Province. Frontiers in Earth Science, 8: 568365. doi:10.3389/feart.2020.568365.

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 Urheber:
Xu, Jingwei1, Autor
Koldunov, Nikolay1, Autor
Xu, Min1, Autor
Zhu, Xiuhua1, Autor
Fraedrich, Klaus2, Autor
Jiang, Xi1, Autor
Zhu, Shoupeng1, Autor
Zhi, Xiefei1, Autor
Affiliations:
1external, ou_persistent22              
2MPI for Meteorology, Max Planck Society, Bundesstraße 53, 20146 Hamburg, DE, ou_913545              

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Schlagwörter: Geology; rice yield anomalies; climatic suitability; East Asian summer monsoon; Jangsu; Indian ocean dipole; sea surfce temperature;
 Zusammenfassung: One of the main water vapor sources of eastern China is the Bay of Bengal, over which the circulation is influenced by the Tropical Indian Ocean Dipole (TIOD). The TIOD has a long-lasting effect on weather patterns, which in turn influence the rice yield and quality in eastern China, such as in Jiangsu Province. To identify the main mechanism involved, we perform a detailed investigation of the connections between the TIOD-like sea surface temperature (SST) and the climatic suitability for growing rice, and the subsequent rice yield anomalies, in Jiangsu Province. In particular, we compare the relationships, and identify the underlying mechanisms, of TIOD SST with suitable sunshine duration, temperature and precipitation during the period of rice culture in the province. Singular Value Decomposition (SVD) results show that the TIOD-like SST has a close correlation with the rice yield anomalies, with a temporal correlation coefficient of 0.43 for 53 years, passing the 99% significance level. Furthermore, in the negative TIOD-like SST years, the background circulation weakens the transport effect of the atmospheric river through which water vapor is transported from the Bay of Bengal to eastern China. This decreased amount of transported water vapor decreases the precipitation and total cloud cover in the province. In turn, this significantly increases the sunshine duration, which plays a key role in rice yield anomalies. The increased sunshine duration and higher temperatures lead to positive rice yield anomalies, and vice versa. Our findings highlight that climatic factors, such as TIOD-like SST, have a far-reaching influence on agricultural production (in this case, rice yield), and thus special attention should be paid to interdisciplinary research in the fields of climate and agriculture.

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Sprache(n): eng - English
 Datum: 2021
 Publikationsstatus: Online veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: BibTex Citekey: XuKoldunovEtAl2021
DOI: 10.3389/feart.2020.568365
 Art des Abschluß: -

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Titel: Frontiers in Earth Science
  Kurztitel : Front. Earth Sci.
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: Lausanne : Frontiers Media
Seiten: - Band / Heft: 8 Artikelnummer: 568365 Start- / Endseite: - Identifikator: ISSN: 2296-6463
CoNE: https://pure.mpg.de/cone/journals/resource/2296-6463