update on chinese ocean color missions
Post on 28-Jan-2022
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Update on Chinese ocean color missions
State Key Laboratory of Satellite Ocean Environment Dynamics (SOED)
Xianqiang He, Delu Pan, Yan Bai
HY-1C mission
Launched on Sept. 7, 2018;
Successor of HY-1A (2002-2004) and HY-1B (2007-2016).
Sensor Bands Resolution SwathCOCTS(Chinese Ocean Color and Temperature Scanner
10 bands(8 bands from 412nm-865nm;2 TIR bands)
1.1km ~3000km
CZI(Coastal Zone Imager)
4 bands(460nm,560nm,650nm,825nm)
50m ~1000km
UVI(Ultra Violet Imager)
2 bands(355nm, 385nm)
550m ~3000km
COCTS vs. MODIS chla
HY1C/COCTS vs. Aqua/MODIS and SNPP/VIIRS8-days composited Chla, SST (2018.10.24-31)
COCTS vs. VIIRS chla
COCTS vs. MODIS SST COCTS vs. VIIRS SST
HY-1E&HY-1F New generation polar-orbit OC satellites. 3 main payloads: New Ocean Color and Temperature Scanner (500m resolution, 18 bands
from 350nm-12000nm); Programmable Moderate Resolution Imaging Spectroradiometer (500m
resolution, 16 bands from 375-2350nm); Coastal Zone Imager (20m resolution, 9 bands from 400-800nm). To be launched in 2021
Summary
HY-1C has been launched in 2018 with global
observation capacity;
HY-1D,HY-1E/1F will be launched before 2021; Geo
OC satellite will be launched in 2022.
Band Wavelength (µm) Typical radiance(mW/cm2µmsr)
SNR
1 0.402~0.422 9.10 3492 0.433~0.453 8.41 4723 0.480~0.500 6.56 4674 0.510~0.530 5.46 4485 0.555~0.575 4.57 4176 0.660~0.680 2.46 3097 0.730~0.770 1.61 2008 0.845~0.885 1.09 3279 10.30~11.40 0.2K(300K, NEΔT)10 11.40~12.50 0.2K(300K, NEΔT)
Chinese ocean color and temperature scanner (COCTS)
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