Main Title |
Can Asian Dust Trigger Phytoplankton Blooms in the Oligotrophic Northern South China Sea. |
Author |
Wang, S. H. ;
Hsu, N. Y. C. ;
Tsay, S. C. ;
Lin, N. H. ;
Sayer, A. M. ;
Huang, S. J. ;
Lau, W. K. M.
|
CORP Author |
National Central Univ.; Goddard Space Flight Center, Greenbelt, MD.; National Science Council; Environmental Protection Administration |
Year Published |
2012 |
Report Number |
GSFC-E-DAA-TN9217 |
Stock Number |
N14-0011866 |
Additional Subjects |
Satellite observation ;
Phytoplankton ;
Dust ;
Sea-viewing wide field-of-view sensor ;
Iron ;
Biogeochemistry ;
Deposition ;
China ;
Seas ;
Biological effects ;
Aerosols ;
Chlorophylls
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
N14-0011866 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
6p |
Abstract |
Satellite data estimate a high dust deposition flux (approximately 18 g m(exp-2 a(exp-1) into the northern South China Sea (SCS). However, observational evidence concerning any biological response to dust fertilization is sparse. In this study, we combined long-term aerosol and chlorophyll-a (Chl-a) measurements from satellite sensors (MODIS and SeaWiFS) with a 16-year record of dust events from surface PM10 observations to investigate dust transport, flux, and the changes in Chl-a concentration over the northern SCS. Our result revealed that readily identifiable strong dust events over this region, although relatively rare (6 cases since 1994) and accounting for only a small proportion of the total dust deposition (approximately 0.28 g m(exp-2 a(exp-1), do occur and could significantly enhance phytoplankton blooms. Following such events, the Chl-a concentration increased up to 4-fold, and generally doubled the springtime background value (0.15 mg m(exp-3). We suggest these heavy dust events contain readily bioavailable iron and enhance the phytoplankton growth in the oligotrophic northern SCS. |
Supplementary Notes |
Text in English. Publicly available Unlimited Distribution as joint owner in the copyright. Partially funded by Grants NSC-98-2745-M-008-001, NSC-98-2811-M-008-073, NSC-99-2811-M-008-081, NSC-99-2111-M-008-011, NSC-98-2611-M-019-016-MY3, CASI. |
PUB Date Free Form |
Mar 15 2012 |
Category Codes |
48 | Natural Resources & Earth Sciences; 97 | Energy |
Document Type |
NT |
Medium |
PC | AC; DL | DL; CA | CA |
Cataloging Source |
EPATI; NASA |
Origin |
NTIS |
Type |
CAT |