Title :
Effectiveness Of QuikSCAT´s Ultra-High Resolution Images in Determining Tropical Cyclone Eye Location
Author :
Saïd, Faozi ; Long, David G.
Author_Institution :
Microwave Earth Remote Sensing Lab., Brigham Young Univ., Provo, UT
Abstract :
The 25 km resolution standard wind products (L2B) are available operationally in near-real time from SeaWinds on QuikSCAT. This relatively low resolution can be enhanced to yield a 2.5 km ultra-high resolution (UHR) product that can be used to identify hurricane eye centers more accurately. A comparison is made between the analyst´s choice of eye location based on UHR images and interpolated best-track position. In this analysis, the UHR images are divided into two categories based on the analyst´s confidence level of finding the eye center location. In each category, statistical error quantities are computed. UHR images within the high-confidence category can provide, for a given year and basin, mean error distance as small as 15 km with a 9 km standard deviation. The use of these categories may facilitate the realization of QuikSCAT´s effectiveness in helping to identify and track hurricane eye centers.
Keywords :
remote sensing; storms; weather forecasting; wind; AD 1999 07; JTWC; Joint Typhoon Warning Center; NESDIS; NHC; National Environmental Satellite Data and Information Service; National Hurricane Center; QuikSCAT effectiveness; SeaWind satellite; UHR image; hurricane eye center; image rendering; mesoscale feature; ocean surface; pencil-beam scatterometer; rain contamination; tropical cyclone determination; ultra-high resolution; weather forecasting; wind; Earth; Hurricanes; Image analysis; Image resolution; Laboratories; Remote sensing; Rendering (computer graphics); Storms; Tropical cyclones; Wind speed; Remote sensing; resolution enhancement; storms; weather forecasting; wind;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2807-6
Electronic_ISBN :
978-1-4244-2808-3
DOI :
10.1109/IGARSS.2008.4778866
