Low-frequency variations in primary production in the Oman upwelling zone associated with monsoon winds

Xiaomei Liao; Haigang Zhan; Xing Wei

doi:10.1007/s00343-012-1283-8

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Low-frequency variations in primary production in the Oman upwelling zone associated with monsoon winds

Updated：2023-05-16

- Low-frequency variations in primary production in the Oman upwelling zone associated with monsoon winds
- Journal of Oceanology and Limnology Vol. 30, Issue 6, Pages: 1045-1053(2012)
- Affiliations：
  
  1. State Key Laboratory of Tropical Oceanography South China Sea Institute of Oceanology Chinese Academy of Sciences
  2. Graduate University of Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-012-1283-8
  CLC：
- Online First：17 November 2012，
  
  Published：2012
- Accepted：
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Liao, X., Zhan, H. & Wei, X. Low-frequency variations in primary production in the Oman upwelling zone associated with monsoon winds., Chin. J. Ocean. Limnol. 30, 1045–1053 (2012). https://doi.org/10.1007/s00343-012-1283-8
DOI：

Liao, X., Zhan, H. & Wei, X. Low-frequency variations in primary production in the Oman upwelling zone associated with monsoon winds., Chin. J. Ocean. Limnol. 30, 1045–1053 (2012). https://doi.org/10.1007/s00343-012-1283-8 DOI：

摘要

Abstract

Thirteen-year satellite-derived data are used to investigate the temporal variability of net primary production (NPP) in the Oman upwelling zone and its potential forcing mechanisms. The NPP in the Oman upwelling zone is characterized by an abnormal decrease during El Niño events. Such an NPP decrease may be related to El Niño-driven anomalous summertime weak wind. During the summer following El Niño

the anomalous northeasterly wind forced by southwest Indian Ocean warming weakens the southwest monsoon and warms the Arabian Sea. The abnormal wind weakens the coastal Ekman transport

offshore Ekman pumping and horizontal advection

resulting in reduced upward nutrient supply to the euphotic zone. A slightly declining trend in NPP after 2000 associated with a gradual decrease in surface monsoon winds is discussed.

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