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Typhoon Ketsana
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Typhoon Ketsana |
| Description |
Ketsana formed into a tropical depression several hundred miles east of the Philippines at 18:00 UTC on 18 October 2003 and continued to organize into a tropical storm. The Tropical Rainfall Measuring Mission (TRMM) satellite overflew Ketsana on the 19th and captured this first image (left) at 22:23 UTC. At the time, Ketsana was a tropical storm with winds estimated at 50 mph by the Joint Typhoon Warning Center. The TRMM image provides a top down view of Ketsana showing rainfall rates within the storm from the TRMM Precipitation Radar (PR) in the inner swath and the TRMM Microwave Imager (TMI) in the outer swath overlaid on Infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). TRMM detected a large area of intense rainfall along the southwest side of the storm's large center (shown by the darker reds). The heat being released near the storm center from the area of heavy precipitation allowed Ketsana to further develop into a typhoon. The next image (right) was taken at 21:28 UTC on October 20th. Ketsana was now a Category 1 storm with sustained winds estimated to be over 90 mph. The the storm appears better organized with a closed center that is much smaller in diameter. Moderate rain rates (green areas) surround the eye in concentric bands. The IR data indicates that Ketsana is a fairly symmetrical storm and does not appear to be inhibited by wind shear. Thus, conditions remain favorable for further development. Fortunately, Ketsana is moving away from the Philippines towards the northeast and is not an immediate threat to any appreciable land masses. TRMM is a joint mission between NASA and the Japanese space agency NASDA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
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Typhoon Ketsana
| Title |
Typhoon Ketsana |
| Description |
Ketsana formed into a tropical depression several hundred miles east of the Philippines at 18:00 UTC on 18 October 2003 and continued to organize into a tropical storm. The Tropical Rainfall Measuring Mission (TRMM) satellite overflew Ketsana on the 19th and captured this first image (left) at 22:23 UTC. At the time, Ketsana was a tropical storm with winds estimated at 50 mph by the Joint Typhoon Warning Center. The TRMM image provides a top down view of Ketsana showing rainfall rates within the storm from the TRMM Precipitation Radar (PR) in the inner swath and the TRMM Microwave Imager (TMI) in the outer swath overlaid on Infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). TRMM detected a large area of intense rainfall along the southwest side of the storm's large center (shown by the darker reds). The heat being released near the storm center from the area of heavy precipitation allowed Ketsana to further develop into a typhoon. The next image (right) was taken at 21:28 UTC on October 20th. Ketsana was now a Category 1 storm with sustained winds estimated to be over 90 mph. The the storm appears better organized with a closed center that is much smaller in diameter. Moderate rain rates (green areas) surround the eye in concentric bands. The IR data indicates that Ketsana is a fairly symmetrical storm and does not appear to be inhibited by wind shear. Thus, conditions remain favorable for further development. Fortunately, Ketsana is moving away from the Philippines towards the northeast and is not an immediate threat to any appreciable land masses. TRMM is a joint mission between NASA and the Japanese space agency NASDA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
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Chasma Boreale Dunes
PIA04804
Sol (our sun)
Mars Orbiter Camera
| Title |
Chasma Boreale Dunes |
| Original Caption Released with Image |
MGS MOC Release No. MOC2-517, 18 October 2003 Frost covers dark sand dunes in this springtime view from Chasma Boreale in the martian north polar region. Dark spots indicate areas where the cold, carbon dioxide frost has begun to sublime away. This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image is located near 84.7°N, 359.3°W and covers an area 3 km (1.9 mi) wide. The scene is illuminated by sunlight from the lower left. |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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International Space Station Imagery |
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