Posted on December 16, 2015 by Bob Berwyn
Wildfire risk growing in tropics
A strong El Niño is peaking across the Pacific Ocean this winter.
Along with being one of the strongest El Niños on record, this year’s edition of the cyclical weather event in the Pacific will be one of the most studied.
NASA, for example, has been tracking the effects of El Niño via satellite data, which shows global impacts, from increasing fire danger in some tropical regions to a reduction of certain types of pollution in other areas.
Some of the findings were presented this week at the American Geophysical Union meeting in San Francisco, where researchers said that atmospheric rivers, significant sources of rainfall, tend to intensify during El Niño events, and that California may see some relief from an extreme multiyear drought. Continue reading
Filed under: climate and weather, Drought, El Niño, extreme weather, global warming | Tagged: atmospheric rivers, climate, El Nino, extreme weather, weather, Wildfires | 1 Comment »
Posted on July 24, 2013 by Bob Berwyn
A GOES 11 satellite image shows a large atmospheric river aimed across California in December 2010.
Warmer, wetter atmosphere will generate more extreme weather
By Summit Voice
FRISCO — Increasing concentrations of greenhouse gases are likely to drive more frequent and intense flooding in the UK, as global warming increases the threat of atmospheric rivers in mid-latitudes.
In their study, researchers, from the University of Reading and University of Iowa found that the number of atmospheric river events will probably double by late this century, compared to the number of events between 1980 ad 2005. Continue reading
Filed under: climate and weather, global warming | Tagged: atmospheric rivers, climate change, extreme weather, global warming, Reading University, University of Iowa | Leave a comment »
Posted on December 9, 2012 by Bob Berwyn
Coastal observatories in California will measure low-level winds and moisture to generate better forecasts
A NOAA weather graphic shows an atmospheric river streaming across the Pacific to the central California coast.
By Summit Voice
SUMMIT COUNTY — To get a better handle on the impacts of incoming “atmospheric rivers,” scientists are installing specialized new coastal observatories at Bodega Bay, Eureka, Pt. Sur and Goleta, California.
The coastal weather stations will measure low altitude winds and the amount of moisture moving ashore — key data that will help forecasters pinpoint how much precipitation is likely to fall during an atmospheric river event.
“California needs to know how and where it might rain or snow, when and where to expect flooding,” said Michael Anderson, Ph.D., state climatologist with the California Department of Water Resources. “The observatories will also help state officials and scientists monitor changes in atmospheric rivers associated with climate change.” Continue reading
Filed under: climate and weather, Environment | Tagged: atmospheric rivers, California, climate, NOAA, Pacific Ocean, Weather forecasting | Leave a comment »