File:Amount of Atmospheric Water Vapor in Hurricane Isabel as Observed By AIRS (8252835987).jpg
Amount_of_Atmospheric_Water_Vapor_in_Hurricane_Isabel_as_Observed_By_AIRS_(8252835987).jpg (500 × 500 pixels, file size: 36 KB, MIME type: image/jpeg)
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editDescriptionAmount of Atmospheric Water Vapor in Hurricane Isabel as Observed By AIRS (8252835987).jpg |
English: These false-color images show the amount of atmospheric water vapor observed by AIRS two weeks prior to the passage of Hurricane Isabel, and then when it was a Category 5 storm. The region shown includes parts of South America and the West Indies. Puerto Rico is the large island below the upper left corner.
Total water vapor represents the depth of a layer if all the water vapor in the atmosphere were to condense and fall to the surface. The color bar on the right sides of the plots give the thickness of this layer in millimeters (mm). The first image, from August 28, shows typical tropical water vapor amounts over the ocean: between roughly 25 and 50 mm, or 1 to 2 inches. The highest values of roughly 80 mm, seen as a red blob over South America, corresponds to intense thunderstorms. Thunderstorms pull in water vapor from surrounding regions and concentrate it, with much of it then falling as rain. Figure 1 (found on the JPL Photojournal linked to below) shows total water during the passage of Hurricane Isabel on September 13. The storm is apparent: the ring of moderate values surrounding a very strong maximum of 100 mm. Total water of more than 80 mm is unusual, and these values correspond to the intense thunderstorms contained within Isabel. The thunderstorms--and the large values of total water--are fed by evaporation from the ocean in the hurricane's high winds. The water vapor near the center of the storm does not remain there long, since hurricane rain rates as high 50 mm (2 inches) per hour imply rapid cycling of the water we observe. Away from the storm the amount of total water vapor is rather low, associated with fair weather where air that ascended near the storm's eye returns to earth, having dropped its moisture as rain. Also seen in the second images are two small regions of about 70 mm of total water over south America. These are yet more thunderstorms, though likely much more benign than those in Isabel. ______________________________________________________________________ About AIRS The Atmospheric Infrared Sounder, AIRS, in conjunction with the Advanced Microwave Sounding Unit, AMSU, sense emitted infrared and microwave radiation from the Earth to provide a three-dimensional look at Earth's weather and climate. Working in tandem, the two instruments make simultaneous observations all the way down to the Earth's surface, even in the presence of heavy clouds. With more than 2,000 channels sensing different regions of the atmosphere, the system creates a global, 3-dimensional map of atmospheric temperature and humidity, cloud amounts and heights, greenhouse gas concentrations, and many other atmospheric phenomena. The AIRS and AMSU fly onboard NASA's Aqua spacecraft and are managed by the Jet Propulsion Laboratory, Pasadena, California, under contract to NASA. JPL is a division of the California Institute of Technology in Pasadena. Credit NASA/JPL AIRS Project Download the image Various sizes of the image are available, and there are two ways to download: 1) Right-click on the image. Click on a size next to "View all sizes". 2) Click on the "Actions" menu located above the image. Select "View all sizes". Resources A companion image can be found on the Jet Propulsion Laboratory Photojournal › Atmospheric Infrared Sounder web site › How to get the AIRS data Data Products › Data Portals › Documentation › |
Date | Taken on 11 March 2005, 14:14:45 |
Source | Amount of Atmospheric Water Vapor in Hurricane Isabel as Observed By AIRS |
Author | Atmospheric Infrared Sounder |
Flickr set InfoField | Water Vapor |
Flickr tags InfoField | atmosphericinfraredsounder; nasa; airs; watervapor; jpl; hurricane |
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This image was originally posted to Flickr by Atmospheric Infrared Sounder at https://flickr.com/photos/90896682@N06/8252835987. It was reviewed on 25 September 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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