Comments on: Fire activity in Canada http://cimss.ssec.wisc.edu/goes/blog/archives/677 A weblog of meteorological satellite imagery relevant to current weather events Thu, 04 Dec 2008 03:58:06 +0000 http://wordpress.org/?v=2.6.1 By: scott.bachmeier http://cimss.ssec.wisc.edu/goes/blog/archives/677#comment-17032 scott.bachmeier Thu, 17 Jul 2008 01:18:39 +0000 http://cimss.ssec.wisc.edu/goes/blog/archives/677#comment-17032 There are two types of InfraRed (IR) satellite imagery shown here: GOES (which orbits at an altitude of about 35,800 km above the Earth), and MODIS (which flys much closer to Earth at an altitude of about 705 km). The spatial resolution of the GOES IR imagery is about 4 km, but the MODIS IR imagery has a significantly better spatial resolution of 1 km. If you try to "zoom in" for a closer look, the satellite image pixels will get larger, but you will not gain any additional information. With the color enhancement applied to these GOES and MODIS IR images, hotter pixel temperatures are seen as you go from black to red to yellow colors. There are two types of InfraRed (IR) satellite imagery shown here: GOES (which orbits at an altitude of about 35,800 km above the Earth), and MODIS (which flys much closer to Earth at an altitude of about 705 km). The spatial resolution of the GOES IR imagery is about 4 km, but the MODIS IR imagery has a significantly better spatial resolution of 1 km. If you try to “zoom in” for a closer look, the satellite image pixels will get larger, but you will not gain any additional information.

With the color enhancement applied to these GOES and MODIS IR images, hotter pixel temperatures are seen as you go from black to red to yellow colors.

]]> By: מוצרי פרסום http://cimss.ssec.wisc.edu/goes/blog/archives/677#comment-16987 מוצרי פרסום Wed, 16 Jul 2008 13:42:31 +0000 http://cimss.ssec.wisc.edu/goes/blog/archives/677#comment-16987 <p>ohh..so hot temperatures appear in black on the satellite images?<br /> one more question sorry to bother you, the camera that shoots these images it is infra red as I understand, how far is it above earth? and how much can you zoom and still have a vivid picture?<br /> are there other types of cameras used in these kind of activities?</p> <p>Thanks for your help</p> ohh..so hot temperatures appear in black on the satellite images?
one more question sorry to bother you, the camera that shoots these images it is infra red as I understand, how far is it above earth? and how much can you zoom and still have a vivid picture?
are there other types of cameras used in these kind of activities?

Thanks for your help

]]>