Sea fog characteristics based on MODIS data and streamer model

Zengzhou Hao; Delu Pan; Fang Gong; Jianyu Chen

doi:10.1117/12.829949

29 September 2009 Sea fog characteristics based on MODIS data and streamer model

Zengzhou Hao, Delu Pan, Fang Gong, Jianyu Chen

Proceedings Volume 7475, Remote Sensing of Clouds and the Atmosphere XIV; 747515 (2009) https://doi.org/10.1117/12.829949
Event: SPIE Remote Sensing, 2009, Berlin, Germany

Abstract

To achieve sea fog detection in China Sea with EOS MODIS data, the reflectance between band 1-7 of sea fog and other cloud regions is the pre-work. Base on satellite observations sampling from known sea fog and cloud regions, the spectral characteristics of sea fog and other clouds are analyzed. It shows that the visible reflectance (band 1-4) is generally from 0.2 to 0.4 in sea fog, while the reflectance of cloud regions is higher than 0.4. The near-infrared reflectance over different fog/cloud regions expresses some especial characteristics. At band 7, the reflectance varies observably relative to band 1-4 over sea fog/cloud regions and it is smallest. And the reflectance of band 5 and 6 may be higher than other bands in sea fog regions. Those results deduced from some instances with statistical method maybe present individual property. Therefore, with the Streamer radiative transfer model, the reflectance at the satellite altitude of the sea fog, low-cloud, mid-cloud and high-cloud with different cloud microphysical and observational conditions is simulated and re-analyzed. The simulations also show those results in extent and are consistent with the satellite observations. It shows that the near-infrared wavelength band 6 is useful to detect sea fog by MODIS. The reflectance of sea fog satisfies band3>band6>band2 while the general cloud is band3>band2>band6. Those properties are also simply explained by Mie scattering theory. It is the different scattering efficiency of sea fog and clouds at different wavelength that make some results. Those properties at sea fog in seven bands that is different from other clouds is nice for fog autodetection from EOS MODIS.

Citation Download Citation

Zengzhou Hao, Delu Pan, Fang Gong, and Jianyu Chen "Sea fog characteristics based on MODIS data and streamer model", Proc. SPIE 7475, Remote Sensing of Clouds and the Atmosphere XIV, 747515 (29 September 2009); https://doi.org/10.1117/12.829949

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available