The Effect of the 12-micrometer Band: Comparing GOES-11 and GOES-12 Data Using the 3-Channel Volcanic Ash Algorithm
Abstract
The 12-micrometer channel on GOES-11 has been replaced by the 13.3-micrometer channel on the latest geosynchronous satellite, GOES-12. There has been concern that this 13.3-micrometer channel will not be as accurate in detecting volcanic ash. Volcanic ash is highlighted using a special volcanic ash algorithm, an arithmetic combination of the brightness temperatures as measured by three channels, yielding a unitless brightness count whose values comprise an IR image. Degradation in cloud detection, especially low clouds, was also expected. IR data from GOES-11 and GOES-12 for two Mexican volcanoes, Colima and Popocatepetl, was analyzed. The data indicates that, in general, the GOES-11 volcanic ash algorithm with the 12-micrometer band provides much better data for various types of clouds. It emphasizes the importance of the 12-micrometer band and provides scope for future research in this area.
Cite
@article{arxiv.physics/0608254,
title = {The Effect of the 12-micrometer Band: Comparing GOES-11 and GOES-12 Data Using the 3-Channel Volcanic Ash Algorithm},
author = {Emily M. Matson},
journal= {arXiv preprint arXiv:physics/0608254},
year = {2007}
}
Comments
Paper satisfies senior tech lab requirement (summer mentorship) for Thomas Jefferson High School for Science and Technology (TJHSST),Alexandria, VA; 23 pages, 4 figures