Detection of Fog over Land Using Hj-1 Data
نویسندگان
چکیده
Fog is a kind of meteorological disaster, which has a serious impact on social economic activities and daily life of human beings. In this paper, the fog detection model based on the characteristics of HJ-1 satellite is put forward firstly. Then the model is tested by HJ-1B data and synchronous MODIS data in southern China at January 9, 2009. By comparing the experiment results of HJ data and MODIS data, it shows that HJ data is suitable for fog detection.
منابع مشابه
Fog Detection with Terra-modis and Msg-seviri
A method is proposed to discriminate bewteen ground and uplifted fog by means of TERRA-MODIS data. First results of the MODIS fog/low stratus detection scheme are presented. The method is based on radiative transfer calculations which provide minimum and maximum fog albedo for 7 spectral bands. Threshold functions which are dependent on the solar zenith angle are used for 7 initial tests. The m...
متن کاملRetrieval of Land Surface Temperature over the Heihe River Basin Using HJ-1B Thermal Infrared Data
The reliable estimation of spatially distributed Land Surface Temperature (LST) is useful for monitoring regional land surface heat fluxes. A single-channel method is developed to derive the LST over the Heihe River Basin in China using data from the infrared sensor (IRS) onboard the Chinese “Environmental and Disaster Monitoring and Forecasting with a Small Satellite Constellation” (HJ-1B for ...
متن کاملClassification of Forest Land Information Using Environment Satellite (HJ-1) Data
For researching properties of HJ-1A CCD camera multispectral data in performance on extraction of land features information, this paper selected the east area of NiLeke forest farm in the western Tianshan mountain as the study area, and analyzed different accuracies for HJ-1A CCD data in identifying forest land categories using various classification methods. Firstly, maximumlikelihood classifi...
متن کاملDetection of ground fog in mountainous areas from MODIS (Collection 051) daytime data using a statistical approach
The mountain cloud forest of Taiwan can be delimited from other forest types using a map of the ground fog frequency. In order to create such a frequency map from remotely sensed data, an algorithm able to detect ground fog is necessary. Common techniques for ground fog detection based on weather satellite data cannot be applied to fog occurrences in Taiwan as they rely on several assumptions r...
متن کاملLand Surface Albedo Estimation from Chinese HJ Satellite Data Based on the Direct Estimation Approach
Monitoring surface albedo at medium-to-fine resolution (<100 m) has become increasingly important for medium-to-fine scale applications and coarse-resolution data evaluation. This paper presents a method for estimating surface albedo directly using top-of-atmosphere reflectance. This is the first attempt to derive surface albedo for both snow-free and snow-covered conditions from medium-resolut...
متن کامل