Seasonal cycle of cloud cover analyzed using Meteosat images
نویسندگان
چکیده
منابع مشابه
Seasonal cycle of cloud cover analyzed using Meteosat images
A cloud-detection method was used to retrieve cloudy pixels from Meteosat images. High spatial resolution (one pixel), monthly averaged cloud-cover distribution was obtained for a 1-year period. The seasonal cycle of cloud amount was analyzed. Cloud parameters obtained include the total cloud amount and the percentage of occurrence of clouds at three altitudes. Hourly variations of cloud cover ...
متن کاملCorneal topography using computer analyzed rasterstereographic images.
This paper describes a new method for determining corneal surface detail utilizing a modified Zeiss photo slit lamp. This system projects a grid onto the cornea through a cobalt blue filter. The tear film is stained with fluorescein, causing the projected grid pattern to be visible on the corneal surface. A video image of the grid is then digitized by an image processor which calculates surface...
متن کاملGeometric Cloud Heights from Meteosat and Avhrr
Geometric cloud height estimation provides an alternative to cloud top temperature methods if two satellites view the same cloud. First we demonstrate the stereo cloud height derivation with a combination of Meteosat 7 and Meteosat 5 5 km resolution Infrared data. Comparison with the temperature technique shows consistency in the majority of the clouds, but some differences. This demonstrates t...
متن کاملOn mining METEOSAT and ERS multitemporal images
The frequency and the resolution of the images acquired by remote sensing techniques are nowadays so high that end-users can get huge volumes of observation data for a same geographic area. In this paper, we propose to use data mining tools for detecting evolutions. More precisely, we explain how to make use of sequential patterns to automatically extract evolutions that are contained in a sate...
متن کاملCloud Cover Estimation Using Multitemporal Hemisphere Imageries
The solar radiation is the origin of energy for the photosynthesis and forest productivities. On the other hand, clouds constantly appear, move and disappear all the time and influence atmospheric and radiation conditions at the same time. Therefore, to understand cloud parameters which consist of cloud covers, its distributions and types etc. for a short time interval can help us to estimate s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Annales Geophysicae
سال: 1998
ISSN: 0992-7689
DOI: 10.1007/s005850050605