Observed Global Increases in Tropical Cyclone-Induced Ocean Cooling and Primary Production

Da, Nguyen Dac; Foltz, Gregory R.; Balaguru, Karthik

doi:10.1029/2021GL092574

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Observed Global Increases in Tropical Cyclone-Induced Ocean Cooling and Primary Production

2021
By Da, Nguyen Dac ; Foltz, Gregory R. ; Balaguru, Karthik
Source: Geophysical Research Letters, 48(9)

[PDF-967.98 KB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Da, Nguyen Dac ; Foltz, Gregory R. ; Balaguru, Karthik

Da, Nguyen Dac ; Foltz, Gregory R. ; Balaguru, Karthik Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies)

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies) Less -
Description:

Tropical cyclones provide an important source of ocean mixing, bringing cold, nutrient-rich water to the surface and triggering phytoplankton blooms. Here, we show significant increases in global tropical cyclone-induced sea surface temperature cooling and surface chlorophyll-a concentration of 0.05°C and 3.7 × 10−3 mg m−3 per decade over the past 20–35 years. The trends have been driven primarily by an increase in the intensity of strong tropical cyclones. The increase in chlorophyll-a concentration has been, on average, 1.6% per decade in oligotrophic areas during the tropical cyclone season, in contrast to a decrease of 0.1% per decade during the other months. This tropical cyclone-induced increase has partially mitigated the overall decline in primary production under climate change.
Keywords:

[+]

Cyclones—Tropics Chlorophyll‐a Global Warming Ocean Stratification Primary Production SST Cooling Tropical Cyclone
Source:

Geophysical Research Letters, 48(9)
DOI:

https://doi.org/10.1029/2021GL092574
Document Type:

Journal Article
Funding:

Grant no. NA17OAR4310155
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Submitted
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urn:sha256:e7a61d9bdf80c62fa1ec5d97c70cb83b1464ac924778c777e08e269d0f8c3e0f
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https://repository.library.noaa.gov/view/noaa/29580/noaa_29580_DS1.pdf
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Observed Global Increases in Tropical Cyclone-Induced Ocean Cooling and Primary Production

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