Category Archives: Meteorology
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
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
Europe recorded its hottest June ever.
The hottest temperatures occurred June 26-28, resulting from a high-pressure system that settled over Europe combined with hot winds from the Sahara Desert in Africa. France observed temperatures in excess of 113 degrees for the first time since temperatures were recorded. Continue reading
On Saturday, we will mark the 50th anniversary of humankind’s first-ever footsteps on a different world, the lunar landing of Apollo 11.
The moon landing represented the peak of the Cold War’s space race and, though motivated by martial competition between geopolitical adversaries, the drive to reach the moon produced a large number of technical advances which most of us take for granted today. Continue reading
The “urban heat island effect” refers to the increased temperatures of urban areas compared with their rural surroundings. The urban heat island is a well-documented example of inadvertent modification of climate by human activities. It is a classic example of … Continue reading