Three-quarters of counties in the contiguous United States present suitable environmental conditions for at least part of the year for either Aedes aegypti or Aedes albopictus mosquitoes to survive if introduced, according to researchers at the US Centers for Disease Control and Prevention. The two mosquito species can transmit viruses that cause Zika, dengue, chikungunya, and yellow fever.
Satellite imagery shows that Jose is a large storm, with a large reach. NASA's Aqua satellite captured cloud top temperatures of Tropical Storm Jose that revealed the strongest storms were in the northeastern part of the tropical cyclone but the storm is so large that it is causing dangerous ocean conditions from Bermuda to the US East coast.
The rainfall over the Yangtze River valley in the summer of 2016 was much weaker than that in 1998, despite the intensity of the 2016 El Nino having been as strong as that in 1998. A group of scientists from the Institute of Atmospheric Physics, Chinese Academy of Sciences, have now revealed the remarkable role played by the mid-latitude circulation in this surprising feature.
Sea Surface Temperature forcing can explain about 2/3 heat wave variability and the other 1/3 comes from atmospheric internal variability during 1979-2008.
Gravity waves form in the atmosphere as a result of destabilizing processes. The effects of gravity waves can only be taken into consideration by including additional special components in the models. The "MS-GWaves" research unit funded by the German Research Foundation and led by Goethe University Frankfurt has further developed such parameterizations and will test them in the second funding period.
Daniel Rothman, professor of geophysics in the MIT Department of Earth, Atmospheric and Planetary Sciences and co-director of MIT's Lorenz Center, has analyzed significant changes in the carbon cycle over the last 540 million years, including the five mass extinction events. He has identified 'thresholds of catastrophe' in the carbon cycle that, if exceeded, would lead to an unstable environment, and ultimately, mass extinction.
Researchers at the University of Alaska Fairbanks' Geophysical Institute are exploring the changing chemistry of the Arctic's atmosphere to help answer the question of what happens as snow and ice begin to melt.
Former Hurricane Otis was not showing any thunderstorm development or precipitation on satellite imagery on Sept. 19. As a result, the National Hurricane Center declared Otis a remnant low pressure area.
Infrared imagery from NASA's Aqua satellite has revealed that the area of strongest storms within now Tropical Depression Norma has diminished.
Satellite data is enabling forecasters to look inside and outside of powerful Hurricane Maria. A NASA animation of satellite imagery shows Hurricane Maria's first landfall on the island of Dominica.