AIRS Image of Lowell
On Aug. 18 at 5:11 p.m. EDT NASA's Aqua satellite saw powerful thunderstorms (purple) around the center of the tropical cyclone and appeared in fragmented bands south and east of the center.
GOES-West Image of Lowell
NOAA's GOES-West satellite caught an infrared picture of Tropical Storm Lowell on Aug. 19 at 5 a.m. EDT showing thick bands of thunderstorms wrapping into the center from the south and east.
TRMM Image of Karina
When TRMM passed over Tropical Storm Karina on August 19, there was an isolated area of heavy rain (red) in the western quadrant where rain was falling at a rate of 2 inches/40 mm per hour.
The Importance of Brassinosteroids
The photo shows just how important brassinosteroids are for the development of plants. A deficit of the plant hormone has disrupted growth in the cucumber plant on the right.
The Northern Hemisphere in a Cold (Stadial) Phase
During the cold stadial periods of the last ice age, massive ice sheets covered northern parts of North America and Europe. Strong northwest winds drove the Arctic sea ice southward, even as far as ...
The Northern Hemisphere in a Warm Phase
During the extended cold phases the ice sheets continued to thicken. When higher ice sheets prevailed over North America, typical in periods of intermediate sea levels, the prevailing northwest winds ...