Shuangyan He

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In this study, typhoon eyes have been delineated using wavelet analysis from the synthetic aperture radar (SAR) images of ocean surface roughness and from the warm area at the cloud top in the infrared (IR) images, respectively. Envisat SAR imagery, and multi-functional transport satellite (MTSAT) and Feng Yun (FY)-2 Chinese meteorological satellite IR(More)
Concurrent Level-3 data products from MERIS, MODIS, and SeaWiFS between June 2003 and June 2006 for the East China Seas were compared against each other to evaluate the consistency between the sensors. The atmospheres in these regions is generally turbid, with typical aerosol optical thickness at 865 nm (tau_865) around 0.16, therefore presents a challenge(More)
In this paper, More than 1000 satellite images including Terra/Aqua MODIS, Sentinel-1A SAR images from 2013 to 2015 were analyzed to obtain spatio-temporal distribution of internal waves in the Andaman Sea. The statistical results demonstrate that the internal wave have been observed mostly in four areas by the remote sensing: northern Sumatra Island,(More)
In examining the dependence of the sea surface reflectance of skylight ρs on sky conditions, wind speed, solar zenith angle, and viewing geometry, Mobley [Appl. Opt.38, 7442 (1999).10.1364/AO.38.007442] assumed ρs is independent of wavelength. Lee et al. [Opt. Express18, 26313 (2010).10.1364/OE.18.026313] showed experimentally that ρs does vary spectrally(More)
Spectral remote sensing reflectance in the visible (Rrs(λ), sr) was derived from ENVISAT MERIS data over the East China Seas, and compared with those determined from concurrent in situ measurements between 2003 and 2007. The results showed that both the FUB plug-in module and the standard MERIS Level-2 data generally overestimated Rrs(λ), particularly in(More)
Detection of red tides (harmful algal blooms or HABs) from space has been problematic in optically complex waters, mainly due to interference from non-pigment constituents to the satellite signal. Using in situ and MERIS (Medium Resolution Imaging Spectrometer) measurements, the spectral characteristics of red tide and non-red tide waters were studied in(More)
A series of novel 1,3,4-thiadiazole-containing benzisoselenazolone derivatives were prepared by the condensation of 2-chloroselenobenzoyl chloride and 2-amino-5-substituted-1,3,4-thiadiazole. Their in vitro antiproliferative activities were evaluated in SSMC-7721, MCF-7 and A-549 cells. The results suggest that, in different tumor cells, some compounds have(More)
As one of the most powerful air-sea interactions in the weather system, a typhoon usually accompanies with a wide range of heavy rainfall. Due to the influence of rainfall on the radar signal, the inversion precision of sea surface wind field from space-borne radar declines. In this paper, based on C band scatterometer rain effect model and Synthetic(More)
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