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3 January 2013
The 800 Kilometer Long Shadow
This true colour image from the NASA Terra satellite today shows an 800 km long shadow stretching from NE Ohio into the Atlantic. The shadow was the result of the low early January sun angle, and a deck of cirrus clouds at around 10km above the surface. Plenty of other things to notice as well. What a meteorologist sees in this image: 1. Strong winds over the mountains of New …
26 November 2012
Gravity Waves Are Not Something You Only Hear About On Doctor Who
We had a nice display of gravity waves over the Mid Atlantic on Saturday. You have likely seen this type of cloud pattern in the sky many times and the view from the Aqua satellite as it passed over Virginia on Saturday shows it well. In many waves this is the atmospheric equivalent of throwing a rock in a pond. Instead of a series of waves emanating from the spot …
24 September 2012
Can You Tell The Date From Space? Yes!
Notice the Shadow in this image taken Saturday. It is due North/South,and this happens only on the equinoxes. In other words it must be either late September or late March. You can actually tell it is late September instead of March, by looking at the incredible amount of sea ice around Antarctica. It is late winter there, and Antarctica nearly doubles in size (if you count the ice) during the winter. The …
21 April 2012
Asperatus Over Chincoteague
Chincoteague Island on the eastern shore of the Delmarva Peninsula is famous for its wild ponies. they’ve roamed the island or centuries and the present ponies may be descendants from a doomed ship that sank near shore in the 17th century. It’s also famous for some incredible scenery and a beautiful lighthouse that was rebuilt during the Lincoln Administration. It is not famous for ASPERATUS CLOUDS but the pic above shows a beautiful display of them on Wed. 17 April. …
Dan Satterfield has worked as an on air meteorologist for 32 years in Oklahoma, Florida and Alabama. Forecasting weather is Dan's job, but all of Earth Science is his passion. This journal is where Dan writes about things he has too little time for on air. Dan blogs about peer-reviewed Earth science for Junior High level audiences and up.