Natural Hazard

High winds and unusually dry conditions are fueling the Los Angeles infernos

Jan
09

California wildfire season should be over. So why is L.A. burning?

Unusually dry conditions and hurricane-force seasonal winds are fueling multiple fast-moving and destructive wildfires in Los Angeles County. Gusts that reached over 145 kilometers per hour (90 miles per hour) quickly drove the blazes into urban areas, forcing more than 100,000 people to evacuate from their homes and killing at least 5 people as of JAn. 8.  ...

One of the big reasons the Los Angeles–area fires are growing so out of control is that Santa Ana winds are blowing across the region. These winds typically occur in the fall and winter, and they involve dry wind blowing from inland, high desert areas toward the California coast. Along the way, the wind blows over mountain ranges. As the wind descends the mountains, it becomes compressed due to the increased atmospheric pressure and warms. That in turn lowers the relative humidity of the already dry desert air, making it better at desiccating vegetation that can fuel fires. 

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Posted By mike kraft read more

Toxic Tide Shows Up Early in Sag Harbor

Sep
09

High levels of Cochlodinium detected in Sag Harbor cove last week could put shellfish and finfish at risk.13 August 2014 - By Mara Certic

Just weeks after blue-green algal blooms were detected in Georgica Pond, extremely high levels of the toxic rust alga Cochlodinium have emerged in Sag Harbor and East Hampton waters.

Cochlodinium first appeared on Long Island in 2004 and has been detected in local waters every summer since. According to Professor Christopher Gobler, who conducts water quality testing and is a professor at Stony Brook University’s School of Marine and Atmospheric Sciences, densities above 500 cells per milliliter can be lethal to both finfish and shellfish. The Gobler Laboratory recorded Cochlodinium at densities exceeding 30,000 cells per milliliter in Sag Harbor Cove, and over 1,000 in Accabonac and Three Mile Harbors.

http://sagharborexpress.com/toxic-tide-shows-up-early-in-sag-harbor/

http://sagharboronline.com/sagharborexpress/page-1/toxic-tide-shows-up-early-in-sag-harbor-32598

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Posted By Norea read more
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