数据说明
EIO-WPO-SCS Ocean Secchi Disk Depth (SDD)
上传时间:2019-05-21 14:56:19 浏览次数:作者与来源:admin
East India Ocean Secchi Disk Depth (SDD)
Combining China's HY-1B and EOS/MODIS data to achieve daily average, ten-day average and monthly average products, total suspended matter, chlorophyll a concentration and secchi disk depth were produced. The duration of data is from May 30, 2010 to May 30, 2015, with the period of daily, 10-day and monthly. The scopes of the data include East India Ocean, West Pacific and South China Sea.
For East India Ocean, the regional scope is 80ºE ~118ºE、10ºS~21ºN.

It is the fusion product of the secchi disk depth (or water transparency) retrieved by HY-1B and EOS/MODIS.
Unit: m
Resolution: 1.8km
Duration: May 30, 2010 - May 30, 2015
Source: HY-1B L1 data are from the satellite ground station and the satellite data processing & sharing center of SOED/SIO.  EOS/MODIS L2 data are from the NASA’s Ocean Biology Processing Group (OBPG) via site https://oceancolor.gsfc.nasa.gov/.
Version: 2018
Dataset Name: SIO_SAT_SENSOR_EIO
Product Name: SIO_SAT_SENSOR_yyyy-MM-ddTOyyyy-MM-dd_L3B_EIO_1KM_SSD_HE2016
Processing:
Based on the satellite-derived Chl and TSM, the water transparency (alias Secchi disk depth, SDD) is retrieved using the semi-analytic algorithm (He et al., 2004a;2004b;2017) as
Zd=1/4(a+bb)ln[ρpαβ(a+bb)/Cefbb]
where a and bb are the absorption and backscattering coefficients, which are the functions of the Chl and SPM. For case-I water, a and bb can be estimated by Chl as
a(λ)=(aw(λ)+0.06A(λ)Chl0.65)[1+0.2e-0.014(λ-440)]
bb(λ)=bbw(λ)+(0.3Chl0.62-bw(550){0.002+0.02[0.2-0.25log(Chl)]550/λ)
For the case-II water, the absorption and backscattering by the TSM should be added as
a_TSM(λ)=TSM*(0.0205+0.035e-0.0055(λ-440))
bbp_TSM(λ)=0.016*TSM*[0.28-0.000167(λ-400)]
Known Issues:
Due to no orbit calibration instrument onboard the HY-1B satellite, there may have calibration issue on the HY-1B/COTS L1B data, which will propagate to the derived SDD product.
Reference
Xianqiang He, Delu pan, Zhihua Mao, Qiankun Zhu.The study on the inversing model of water transparency using the SeaWiFS data. ACTA OCEANOLOGICA SINICA, 2014,26(5):55-62. (In Chinese with English abstract).
Xianqiang He*, Delu Pan, Yan Bai, Tianyu Wang, Chen-Tung Arthur Chen, Qiankun Zhu, Zengzhou Hao, Fang Gong. Recent changes of global ocean transparency observed by SeaWiFS. Continental Shelf Research, ,2016, 143, 159-166. DOI: 10.1016/j.csr.2016.09.011
Xianqiang He*, Yan Bai, Chen-Tung Authur Chen, Yi-Chia Hsin, Chau-Ron Wu, Weidong Zhai, Zhiliang Liu, Fang Gong. Satellite views of the episodic terrestrial material transport to the southern Okinawa Trough driven by typhoon. Journal of Geophysical Research - C: Oceans, 2014,119:4490-4504.
DOI: 10.1002/2014JC009872
Acknowledgment
Please cite the above references if this dataset is used. Moreover, the satellite ground station and the satellite data processing & sharing center of the SOED/SIO should be acknowledged.


West Pacific Secchi Disk Depth (SDD)
Combining China's HY-1B and EOS/MODIS data to achieve daily average, ten-day average and monthly average products, total suspended matter, chlorophyll a concentration and secchi disk depth were produced. The duration of data is from May 30, 2010 to May 30, 2015, with the period of daily, 10-day and monthly. The scopes of the data include East India Ocean, West Pacific and South China Sea.
For West Pacific, the regional scope is 121ºE~160ºE, 2ºS~46ºN.
It is the fusion product of the secchi disk depth (or water transparency) retrieved by HY-1B and EOS/MODIS.
Unit: m
Resolution: 1.8km
Duration: May 30, 2010 - May 30, 2015
Source: HY-1B L1 data are from the satellite ground station and the satellite data processing & sharing center of SOED/SIO.  EOS/MODIS L2 data are from the NASA’s Ocean Biology Processing Group (OBPG) via site https://oceancolor.gsfc.nasa.gov/.
Version: 2018
Dataset Name: SIO_SAT_SENSOR_WPO
Product Name: SIO_SAT_SENSOR_yyyy-MM-ddTOyyyy-MM-dd_L3B_WPO_1KM_SSD_HE2016
Processing:
Based on the satellite-derived Chl and TSM, the water transparency (alias Secchi disk depth, SDD) is retrieved using the semi-analytic algorithm (He et al., 2004a;2004b;2017) as
Zd=1/4(a+bb)ln[ρpαβ(a+bb)/Cefbb]
where a and bb are the absorption and backscattering coefficients, which are the functions of the Chl and SPM. For case-I water, a and bb can be estimated by Chl as
a(λ)=(aw(λ)+0.06A(λ)Chl0.65)[1+0.2e-0.014(λ-440)]
bb(λ)=bbw(λ)+(0.3Chl0.62-bw(550){0.002+0.02[0.2-0.25log(Chl)]550/λ)
For the case-II water, the absorption and backscattering by the TSM should be added as
a_TSM(λ)=TSM*(0.0205+0.035e-0.0055(λ-440))
bbp_TSM(λ)=0.016*TSM*[0.28-0.000167(λ-400)]
Known Issues:
Due to no orbit calibration instrument onboard the HY-1B satellite, there may have calibration issue on the HY-1B/COTS L1B data, which will propagate to the derived SDD product.
Reference
Xianqiang He, Delu pan, Zhihua Mao, Qiankun Zhu.The study on the inversing model of water transparency using the SeaWiFS data. ACTA OCEANOLOGICA SINICA, 2014,26(5):55-62. (In Chinese with English abstract).
Xianqiang He*, Delu Pan, Yan Bai, Tianyu Wang, Chen-Tung Arthur Chen, Qiankun Zhu, Zengzhou Hao, Fang Gong. Recent changes of global ocean transparency observed by SeaWiFS. Continental Shelf Research, ,2016, 143, 159-166. DOI: 10.1016/j.csr.2016.09.011
Xianqiang He*, Yan Bai, Chen-Tung Authur Chen, Yi-Chia Hsin, Chau-Ron Wu, Weidong Zhai, Zhiliang Liu, Fang Gong. Satellite views of the episodic terrestrial material transport to the southern Okinawa Trough driven by typhoon. Journal of Geophysical Research - C: Oceans, 2014,119:4490-4504.
DOI: 10.1002/2014JC009872
Acknowledgment
Please cite the above references if this dataset is used. Moreover, the satellite ground station and the satellite data processing & sharing center of the SOED/SIO should be acknowledged.


South China Sea Secchi Disk Depth (SDD)
Combining China's HY-1B and EOS/MODIS data to achieve daily average, ten-day average and monthly average products, total suspended matter, chlorophyll a concentration and secchi disk depth were produced. The duration of data is from May 30, 2010 to May 30, 2015, with the period of daily, 10-day and monthly. The scopes of the data include East India Ocean, West Pacific and South China Sea.
For South China Sea, the regional scope is 98ºE~127ºE, 0~25ºN.
It is the fusion product of the secchi disk depth (or water transparency) retrieved by HY-1B and EOS/MODIS.
Unit: m
Resolution: 1.8km
Duration: May 30, 2010 - May 30, 2015
Source: HY-1B L1 data are from the satellite ground station and the satellite data processing & sharing center of SOED/SIO.  EOS/MODIS L2 data are from the NASA’s Ocean Biology Processing Group (OBPG) via site https://oceancolor.gsfc.nasa.gov/.
Version: 2018
Dataset Name: SIO_SAT_SENSOR_SCS
Product Name: SIO_SAT_SENSOR_yyyy-MM-ddTOyyyy-MM-dd_L3B_SCS_1KM_SSD_HE2016
Processing:
Based on the satellite-derived Chl and TSM, the water transparency (alias Secchi disk depth, SDD) is retrieved using the semi-analytic algorithm (He et al., 2004a;2004b;2017) as
Zd=1/4(a+bb)ln[ρpαβ(a+bb)/Cefbb]
where a and bb are the absorption and backscattering coefficients, which are the functions of the Chl and SPM. For case-I water, a and bb can be estimated by Chl as
a(λ)=(aw(λ)+0.06A(λ)Chl0.65)[1+0.2e-0.014(λ-440)]
bb(λ)=bbw(λ)+(0.3Chl0.62-bw(550){0.002+0.02[0.2-0.25log(Chl)]550/λ)
For the case-II water, the absorption and backscattering by the TSM should be added as
a_TSM(λ)=TSM*(0.0205+0.035e-0.0055(λ-440))
bbp_TSM(λ)=0.016*TSM*[0.28-0.000167(λ-400)]
Known Issues:
Due to no orbit calibration instrument onboard the HY-1B satellite, there may have calibration issue on the HY-1B/COTS L1B data, which will propagate to the derived SDD product.
Reference
Xianqiang He, Delu pan, Zhihua Mao, Qiankun Zhu.The study on the inversing model of water transparency using the SeaWiFS data. ACTA OCEANOLOGICA SINICA, 2014,26(5):55-62. (In Chinese with English abstract).
Xianqiang He*, Delu Pan, Yan Bai, Tianyu Wang, Chen-Tung Arthur Chen, Qiankun Zhu, Zengzhou Hao, Fang Gong. Recent changes of global ocean transparency observed by SeaWiFS. Continental Shelf Research, ,2016, 143, 159-166. DOI: 10.1016/j.csr.2016.09.011
Xianqiang He*, Yan Bai, Chen-Tung Authur Chen, Yi-Chia Hsin, Chau-Ron Wu, Weidong Zhai, Zhiliang Liu, Fang Gong. Satellite views of the episodic terrestrial material transport to the southern Okinawa Trough driven by typhoon. Journal of Geophysical Research - C: Oceans, 2014,119:4490-4504.
DOI: 10.1002/2014JC009872
Acknowledgment
Please cite the above references if this dataset is used. Moreover, the satellite ground station and the satellite data processing & sharing center of the SOED/SIO should be acknowledged.