A tuned ocean color algorithm for the Arctic Ocean: a solution for waters with high CDM content

被引:3
|
作者
Li, Juan [1 ,2 ,4 ]
Matsuoka, Atsushi [3 ,5 ]
Hooker, Stanford B. [6 ]
Maritorena, Stephane [7 ]
Pang, Xiaoping [1 ,2 ,4 ]
Babin, Marcel [2 ]
机构
[1] Wuhan Univ, Chinese Antarctic Ctr Surveying & Mapping, Wuhan 430079, Peoples R China
[2] CNRS, Takuvik Joint Int Lab, Paris, France
[3] Univ Laval, Dept Biol, ULaval Canada, Pavillon Alexandre Vachon, Local 2064,1045,Ave Med, Quebec City, PQ G1V 0A6, Canada
[4] Minist Nat Resources Peoples Republ China, Key Lab Polar Surveying & Mapping, Wuhan 430079, Peoples R China
[5] Univ New Hampshire, Inst Study Earth Oceans & Space, Durham, NH 03824 USA
[6] NASA Goddard Space Flight Ctr, Ocean Ecol Lab, Greenbelt, MD 20771 USA
[7] Univ Calif Santa Barbara, Earth Res Inst, Santa Barbara, CA 93106 USA
基金
加拿大自然科学与工程研究理事会;
关键词
APPARENT OPTICAL-PROPERTIES; CANADIAN BEAUFORT SEA; BIOOPTICAL PROPERTIES; DERIVE A(CDOM)(440); GLOBAL OPTIMIZATION; MARINE PARTICLES; SATELLITE DATA; PERFORMANCE; COASTAL; RIVER;
D O I
10.1364/OE.500340
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The Arctic Ocean (AO) is the most river-influenced ocean. Located at the land-sea interface wherein phytoplankton blooms are common, Arctic coastal waterbodies are among the most affected regions by climate change. Given phytoplankton are critical for energy transfer supporting marine food webs, accurate estimation of chlorophyll a concentration (Chl), which is frequently used as a proxy of phytoplankton biomass, is critical for improving our knowledge of the Arctic marine ecosystem and its response to the ongoing climate change. Due to the unique and complex bio-optical properties of the AO, efforts are still needed to obtain more accurate Chl estimates, especially for coastal waters with high colored detrital material (CDM) content. In this study, we optimized the the Garver-Siegel-Mar itorena (GSM) algorithm, using an Arctic bio-optical dataset comprised of seven wavelengths (the original GSM wavelengths plus 625 nm). Results suggested that our tuned algorithm, denoted GSMA, outperformed an alternative AO GSM algorithm denoted AO.GSM, but the accuracy of Chl estimates was only improved by 8%. In addition, GSMA showed appreciable robustness when assessed using a satellite image and two non-Arctic coastal datasets.
引用
收藏
页码:38494 / 38512
页数:19
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