Archive for the ‘Meteorology’ Category

Sunny outlook for space weather forecasters

Saturday, April 28th, 2012

For decades, companies have tailored public weather data for private customers from farmers to airlines. On Wednesday, a group of businesses said that they are on the cusp of developing a new market: fine-tuned space weather products for customers as varied as electrical utilities and satellite operators.

Why Tornadoes Take the Weekends Off in Summer

Monday, January 2nd, 2012

Tornadoes and hailstorms may take the weekends off during the muggy summer months, according to a new study that reveals new ways human activity can inadvertently sway weather.

Polar orbPolar orbiter going up to improve weather forecastingiter going up to improve weather forecasting

Tuesday, October 25th, 2011

A satellite whose mission will touch the lives of everyone on Earth by taking the planet’s environmental pulse daily for global weather forecasting and meticulous tracking of the changing climate will be launched into space Friday morning atop what’s potentially the final Delta 2 rocket.

Does Air Pollution Alter Lunar Eclipses?

Saturday, July 16th, 2011

It’s been a month since skywatchers in the Eastern Hemisphere were treated to the longest, deepest total lunar eclipse in decades. Many observers carefully monitored the Moon’s darkness as it coursed through the center of the umbra — the darkest part of our planet’s shadow. It’s been realized for years that the amount of cloudiness along Earth’s limb can affect the darkness of the umbra. But could the umbra’s darkness be accentuated by pollution in our atmosphere?

It’s mid-July: Where are all the hurricanes?

Saturday, July 16th, 2011

Many of you may recall that seasonal forecasters predicted an active hurricane season this year, calling for an average of 15 named storms. That’s about 40 to 50 percent more activity than during a typical season.

Climate Scientist Fears His “Wedges” Made It Seem Too Easy

Wednesday, May 18th, 2011

When the torrent of predictions about global warming got too depressing, there were Robert Socolow’s “wedges.”
The Princeton physics and engineering professor, along with his colleague, ecologist Stephen Pacala, countered the gloom and doom of climate change with a theory that offered hope.

On Prehistoric Supercontinent of Pangaea, Latitude and Rain Dictated Where Species Lived

Wednesday, May 18th, 2011

More than 200 million years ago, mammals and reptiles lived in their own separate worlds on the supercontinent Pangaea, despite little geographical incentive to do so. Mammals lived in areas of twice-yearly seasonal rainfall; reptiles stayed in areas where rains came just once a year. Mammals lose more water when they excrete, and thus need water-rich environments to survive. Results are published in the Proceedings of the National Academy of Sciences.

ESA’s water mission keeps tabs on dry spring soils

Saturday, May 14th, 2011

Western Europe’s exceptionally dry spring is clear to see in maps generated using data from SMOS. While these maps offer an interesting view of the stark difference in soil moisture compared to a year ago, the data are also important for agricultural and hydrological applications.

2,300-Year Climate Record Suggests Severe Tropical Droughts as Northern Temperatures Rise

Saturday, May 14th, 2011

A 2,300-year climate record University of Pittsburgh researchers recovered from an Andes Mountains lake reveals that as temperatures in the Northern Hemisphere rise, the planet’s densely populated tropical regions will most likely experience severe water shortages as the crucial summer monsoons become drier. The Pitt team found that equatorial regions of South America already are receiving less rainfall than at any point in the past millennium.

Venus Express carries warning for Earth engineers

Saturday, December 4th, 2010

ESA’s Venus Express satellite has reported an unexpected, high altitude layer of sulphur dioxide in the planet’s upper atmosphere that could act as a warning against plans to mitigate climate change on our own planet by injecting the Earth’s atmosphere with sulphur droplets.

Prototype NASA Earth Camera Goes for Test Flight

Wednesday, October 20th, 2010

A team of researchers and collaborators from NASA’s Jet Propulsion Laboratory, Pasadena, Calif., and the University of Arizona’s College of Optical Sciences in Tucson has successfully conducted the first test flight of a prototype science instrument for a next-generation satellite mission to survey the impacts of aerosols and clouds on global climate change.

Sun’s activity flies in face of climate expectations

Thursday, October 7th, 2010

IF NEW satellite data can be trusted, changes in solar activity warmed the Earth when they should have cooled it.
Joanna Haigh of Imperial College London studied satellite measurements of solar radiation between 2004 and 2007, when overall solar activity was in decline. The sun puts out less energy when its activity is low, but different types of radiation vary to different degrees. Until now, this had been poorly studied.

Folklore Confirmed: The Moon’s Phase Affects Rainfall

Thursday, October 7th, 2010

The Zuni Indians thought a red moon brought water. Seventeenth-century English farmers believed in a “dripping moon,” which supplied rain depending on whether its crescent was tilted up or down. Now scientists have found evidence for another adage: Rain follows the full and new phases of the moon.

Photo Gallery: Cloud-to-Ground Lightning

Thursday, September 16th, 2010

National Geographic has a collection of cloud-to-ground lightning photos from across the globe.

Hurricane IGOR

Thursday, September 16th, 2010

The National Hurricane Center has the latest images and information on Hurricane Igor whose position at:
11:00 AM AST Thu Sep 16 Location: 21.0°N 57.2°W
Max sustained: 140 mph
Moving: NW at 7 mph
Min pressure: 934 mb

Pakistan’s flood weather eased Atlantic hurricanes

Saturday, September 4th, 2010

The stalled weather pattern blamed for disastrous floods in Pakistan and a record heatwave in Russia may have averted disasters elsewhere by putting the North Atlantic hurricane season on hold.

Hurricane Earl Photographed From Space by Astronaut

Wednesday, September 1st, 2010

An astronaut on the International Space Station has photographed Hurricane Earl as it heads towards the U.S. coast as a powerful Category 4 storm.

New ways to chart our maritime past

Tuesday, August 24th, 2010

By combining meteorology and archaeology, scientists may discover old sea routes and mooring sites, and boost our knowledge of ancient maritime culture

Record Collapse of Earth’s Upper Atmosphere Puzzles Scientists

Monday, July 19th, 2010

An upper layer of Earth’s atmosphere recently collapsed in an unexpectedly large contraction, the sheer size of which has scientists scratching their heads, NASA announced Thursday.

WHO TO BELIEVE ON CLIMATE CHANGE?

Thursday, July 8th, 2010

The issue of climate change generates a lot of hot air (pun intended) and conflicting opinions. The lay person who wants to be informed can find himself or herself confronted by contradictory information from sources who appear to be equally valid.