Research on chlorophyll detection ability under high solar zenith angle

Li Hao; He Xianqiang; Tao Bangyi; Wang Difeng

doi:10.3969/j.issn.0253-4193.2018.11.013

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Li Hao, He Xianqiang, Tao Bangyi, Wang Difeng. Research on chlorophyll detection ability under high solar zenith angle[J]. Haiyang Xuebao, 2018, 40(11): 128-140. doi: 10.3969/j.issn.0253-4193.2018.11.013

Citation:

Li Hao, He Xianqiang, Tao Bangyi, Wang Difeng. Research on chlorophyll detection ability under high solar zenith angle[J]. Haiyang Xuebao, 2018, 40(11): 128-140. doi: 10.3969/j.issn.0253-4193.2018.11.013

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Research on chlorophyll detection ability under high solar zenith angle

doi: 10.3969/j.issn.0253-4193.2018.11.013

Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

Received Date: 2018-01-25
Rev Recd Date: 2018-03-22

Abstract

Abstract

The detection limit of satellite chlorophyll algorithm at large solar zenith angles (SZA) in polar regions was assessed using the vector radiative transfer model of PCOART-SA which has accounted for the spherical-shell atmosphere. It was found that the geometric parameters between sun and sensor, particularly the solar zenith angle, have significant influence in the detection limit of satellite chlorophyll algorithm. The minimum chlorophyll concentration detected by satellite is about 0.136 μg/L at large SZA of 80°, while the minimum value is 0.012 8 μg/L at 30°. Because of the high absorption resulted by chlorophyll, the satellite detection at large SZA is difficult, and thus requires high radiometric sensitivity sensor, more accurate calibration and atmospheric correction.
- radiative transfer model,
- ocean color remote sensing,
- PCOART-SA,
- high solar zenith angle,
- chlorophyll

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References(22)

References

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