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Category Archives: Meteorology
When is the autumnal equinox?
This morning we officially entered fall as the autumnal equinox occurred at 2:50 a.m.
That means that today, in common with every location on Earth, we will enjoy exactly 12 hours of daylight and 12 hours of night. Continue reading
What is the hurricane cone of uncertainty?
Starting in the 1950s and up until the 1980s, meteorologists forecast the path of hurricanes using statistical prediction based on past data and current climatological data.
Today, weather computer models are primarily used for the forecasting. Continue reading
Category: Meteorology, Severe Weather, Tropical
Comments Off on What is the hurricane cone of uncertainty?
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Can we modify hurricanes?
There have been several suggestions on how humans might modify the intensity or path of a hurricane.
One method suggested was to change the “energy budget” of the environment around the storm. It was suggested that this could be done by dispersing, from aircraft, carbon soot. That soot would absorb solar energy and warm the atmosphere, which would enhance the evaporation of ocean water and promote the formation of thunderstorms. Continue reading
Do storms impact Arctic sea ice?
As we head into the second half of August the days are noticeably shorter. That change is even more dramatic in the polar regions where the summer ice melt season is nearing its end.
This year’s melt has been particularly dramatic, with the Arctic sea-ice extent likely heading to its lowest level since satellite measurements began in 1979. The previous low extent record was set in 2012. Continue reading
What is warm rain?
Warm rain results from the joining together of a cloud’s liquid water droplets. For the rain to be warm, temperatures throughout the cloud must be above freezing, so ice particles are absent.
Rainmaking is not easy. A single, small raindrop is a collection of about 1 million cloud droplets. A typical cloud droplet is usually 10 times smaller than the periods in this article. Continue reading
