NASA infrared eye sees wind shear affecting Tropical Storm Kong-ReyAugust 29, 2013 in Earth / Earth Sciences
Infrared imagery from NASA's Aqua satellite showed that Tropical Storm Kong-Rey's strongest thunderstorms were being pushed away from its center on its trek northward in the Western North Pacific Ocean.
As Tropical Storm Kong-Rey moved past the northern Philippines NASA's Aqua satellite captured an infrared image of the storm that revealed wind shear was taking a toll on the storm.
Tropical cyclones are made up of hundreds of thunderstorms, and the ones with the coldest cloud top temperatures shoot highest in the atmosphere and have a potential to drop heavy rain. The Atmospheric Infrared Sounder instrument that flies aboard NASA's Aqua satellite measured those cloud-top temperatures on Aug. 29 at 04:59 UTC when it flew over the storm from space. The strongest convection, coldest cloud top temperatures and heaviest thunderstorms had been pushed westward from the center as a result of moderate vertical wind shear. Moderate easterly wind shear pushed some of Kong-Rey's thunderstorms over eastern China as the storm's center continues to track over the ocean.
By Aug. 29 at 1500 UTC/11 a.m. EDT, Kong-Rey had moved north of Taiwan. It was centered near 26.9 north and 122.4 east, about 100 nautical miles north-northeast of Taipei, Taiwan. Kong-Rey's maximum sustained winds were near 40 knots/46 mph/74 kph. The tropical storm was moving to the northwest at 4 knots/4.6 mph/7.4 kph, but is expected to turn to the northeast because of an approaching trough (elongated area) of low pressure moving in from the west. That trough will push Kong-Rey toward Japan.
Forecasters at the Joint Typhoon Warning Center or JTWC expect Kong-Rey to transition into a cold-core system and become extra-tropical within the next day. JTWC forecasters expect that Kong-Rey will make landfall in Japan sometime on Aug. 31 just south of Sasebo, Kyushu, Japan.
Provided by NASA's Goddard Space Flight Center
"NASA infrared eye sees wind shear affecting Tropical Storm Kong-Rey" August 29, 2013 https://phys.org/news/2013-08-nasa-infrared-eye-affecting-tropical.html