Trichodesmium Around Australia: A View From Space

Qi, Lin; Wang, Menghua; Hu, Chuanmin; Capone, Douglas G.; Subramaniam, Ajit; Carpenter, Edward J.; Xie, Yuyuan

doi:10.1029/2023gl104092

i

Trichodesmium Around Australia: A View From Space

Supporting Files

2023
By Qi, Lin ; Wang, Menghua ; Hu, Chuanmin ; Capone, Douglas G. ; Subramaniam, Ajit ; Carpenter, Edward J. ; Xie, Yuyuan
Source: Geophysical Research Letters, 50(16)

Details

Journal Title:

Geophysical Research Letters
Personal Author:

Qi, Lin ; Wang, Menghua ; Hu, Chuanmin ; Capone, Douglas G. ; Subramaniam, Ajit ; Carpenter, Edward J. ; Xie, Yuyuan
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; STAR (Center for Satellite Applications and Research)
Description:

The cyanobacterium Trichodesmium is responsible for approximately half of the ocean's nitrogen input through nitrogen fixation. Although it was first recorded near Australia in the 18th century, the knowledge of where and when large quantity of Trichodesmium around Australia could be found is still lacking. Here, using multi‐band satellite imagery acquired between 2012 and 2021, we fill this knowledge gap through the use of deep learning, designed to recognize both the spectral shapes of individual pixels and spatial morphology of surface aggregations (scums) of Trichodesmium. Trichodesmium scums were found nearly everywhere around Australia, with a cumulative footprint (i.e., where the 10‐year average density is >0.001‰) exceeding 4.6 million km2. Strong seasonality was found, with peak months between September and November. Furthermore, temperature, iron‐rich dust and black carbon aerosols, with the latter being a result of frequent bushfires, play major roles in determining the spatial distributions and seasonality of Trichodesmium.
Subjects:
- General Earth and Planetary Sciences
- Geophysics
Keywords:
- General Earth and Planetary Sciences
- Geophysics
Source:

Geophysical Research Letters, 50(16)
DOI:

https://doi.org/10.1029/2023gl104092
ISSN:

0094-8276 ; 1944-8007
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Download URL:

https://repository.library.noaa.gov/view/noaa/58314/noaa_58314_DS1.pdf
File Type:

[PDF - 3.94 MB]
Collection(s):

National Environmental Satellite and Data Information Service (NESDIS)
Main Document Checksum:

urn:sha256:338ef4e73501762c2f28ebe3018772259415c65d64a356f77af46e132f92179f

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