DOI: 10.1002/2015GL064188
论文题名: Atmospheric deposition - Another source of nutrients enhancing primary productivity in the eastern tropical Indian Ocean during positive Indian Ocean Dipole phases
作者: Siswanto E.
刊名: Geophysical Research Letters
ISSN: 0094-9368
EISSN: 1944-9099
出版年: 2015
卷: 42, 期: 13 起始页码: 5378
结束页码: 5386
语种: 英语
英文关键词: atmospheric deposition
; Indian Ocean Dipole
; nutrients
; primary productivity
; upwelling
Scopus关键词: Aerosols
; Atmospheric chemistry
; Deposition
; Fires
; Meteorological problems
; Oceanography
; Photosynthesis
; Phytoplankton
; Regression analysis
; Aerosol optical thickness
; Atmospheric depositions
; Indian Ocean dipole
; Multiple regression analysis
; Multisensor satellites
; Partial regression coefficients
; Primary productivity
; Upwelling
; Nutrients
; aerosol composition
; atmospheric deposition
; Indian Ocean Dipole
; nitrate
; nutrient cycling
; optical property
; primary production
; regression analysis
; satellite data
; upwelling
; wildfire
; wind-driven circulation
; Indian Ocean
; Indian Ocean (Tropical)
英文摘要: This study used in situ and multisensor satellite data and combinations of various primary productivity (PP) and surface nitrate models to assess the contributions of upwelling and atmospheric deposition to modulating PP in the eastern tropical Indian Ocean (ETIO) during positive phases of the Indian Ocean Dipole (+IOD). Surprisingly, atmospheric deposition of nutrients from wildfires accounted for a higher portion of enhanced PP during +IODs than wind-driven nutrient upwelling. Substantial atmospheric nutrient deposition likely also maintains high PP postupwelling and postwildfire. Multiple regression analysis further supported the importance of atmospheric deposition in determining ETIO PP with a significantly large partial regression coefficient for aerosol optical thickness. It is possible that aerosols from major wildfire areas worldwide contribute nutrients that also nontrivially modulate PP in the oceans' main upwelling systems. Key Points Known nutrient sources enhance productivity during positive IODs Upwelled nutrients alone cannot account for enhanced productivity Nutrients from wildfire aerosols substantially enhance productivity. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938216325&doi=10.1002%2f2015GL064188&partnerID=40&md5=0e661d9e9292bc07a9eb2f1c0b8d2fbf
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8983
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
Recommended Citation:
Siswanto E.. Atmospheric deposition - Another source of nutrients enhancing primary productivity in the eastern tropical Indian Ocean during positive Indian Ocean Dipole phases[J]. Geophysical Research Letters,2015-01-01,42(13).