Re: Something fishy about the Santa Ana wind?
- View Sourcehttp://earthobservatory.nasa.gov/NaturalHazards/Archive/Mar2004/calif
Phytoplankton off the coast of California
Phytoplankton off the coast of California
Chlorophyll Concentrations (2.4 Mb JPEG)
Natural Color (1.7 Mb JPEG)
Linked is a picture of an algae bloom that you can see with your own
eyes. Currently a very strong heat wave impacts California, with
records falling. As you may know similar algae bloom existed to the
west of France and GB during their heat wave this past summer. The
air tends to get compressed coming into California, as it was coming
to France last summer, and it heats. This is caused by increases in
conductivity brought about by the large scale cumulation of algae.
To refresh your memory, osmotic pressures are maintained by cellular
life having a greater ion content than what is in the ocean about
them. This means that water with life in it, even outside gas
exchange conductivity issues, will have a greater conductivity.
Don't worry, 15,000 fruits, nuts and queers aren't going to kick--in
California we are used to the heat.
--- In email@example.com, "David" <b1blancer1@e...>
> NEWS RELEASE: 2004-082and
> March 11, 2004
> NASA Satellite Finds Something Fishy About Santa Ana Winds
> Southern California's legendary Santa Ana winds wreak havoc every
> year, creating hot, dry conditions and fire hazards. Despite their
> often-destructive nature, a study of the "Devil Winds," conducted
> using data from NASA's Quick Scatterometer (Quikscat) spacecraft
> its SeaWinds instrument shows the winds have some positivebenefits.
> "These strong winds, which blow from the land out into the ocean,
> cause cold water to rise from the bottom of the ocean to the top,
> bringing with it many nutrients that ultimately benefit local
> fisheries," said Dr. Timothy Liu, a senior research scientist at
> NASA's Jet Propulsion Laboratory, Pasadena, Calif., and Quikscat
> project scientist. Santa Ana consequences include vortices of cold
> water and high concentrations of chlorophyll 400 to 1,000
> (248 to 621 miles) offshore.on
> Liu and Dr. Hua Hu of the California Institute of Technology,
> Pasadena, in a paper published last year in Geophysical Research
> Letters, revealed satellite observations of the Santa Ana effects
> the ocean during three windy days in February 2003. According tothe
> findings, Quikscat was able to identify the fine features of theresolution to
> coastal Santa Ana wind jets. It identified location, strength and
> extent, which other weather prediction products lack the
> consistently show, and which moored ocean buoys lack sufficientto
> coverage to fully represent.
> Quikscat's high-resolution images of air-sea interaction were used
> measure wind forces on the ocean. Other satellites andinstruments,
> like the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and theOceanic
> Advanced Very High Resolution Radiometer, onboard a National
> and Atmospheric Administration polar orbiting weather satellite,were
> used to measure the temperature and biological production of theocean
> surface, which respond to the wind.productivity by
> The latter instrument showed sea surface temperatures dropped four
> degrees Celsius (seven degrees Fahrenheit) during the February 2003
> Santa Anas. That was a sign that upwelling had occurred, meaning,
> deep cold water moved up to the ocean surface bringing nutrients.
> Images from SeaWiFS confirmed the increased biological
> measuring chlorophyll concentrations in the surface water. It wentpresence of
> from negligible, in the absence of winds, to very active biological
> activity (more than 1.5 milligrams per cubic meter) in the
> the winds.over
> "There really is no other system that can monitor Santa Ana winds
> the entire oceanic region," Liu said. "Scatterometers such asQuikscat
> have a large enough field of view and high enough resolution toeasily
> identify the details of coastal winds, which can affect thekilometers
> transportation, ecology and economy of Southern California."
> High pressure develops inland when cold air is trapped over the
> mountains, driving the dry, hot and dusty Santa Anas (also called
> Santanas and Devil's Breath) at high speeds toward the coast. The
> winds, occurring in fall, winter and spring, can reach 113
> (70 miles) per hour. They happen at any time of day and usuallyreach
> peak strength in December. Telltale signs on the coast includegood
> visibility inland, unusually low humidity and an approaching darkdaily
> brown dust cloud.
> The Quikscat satellite, launched in June 1999, operates in a
> Sun-synchronous, 800-kilometer (497-mile) near-polar orbit. It
> circles Earth every 100 minutes and takes approximately 400,000
> measurements over 93 percent of the planet's surface. It passesover
> Southern California about twice a day, skipping a day every threeor
> four days.by
> Quikscat is part of an integrated Earth observation system managed
> NASA's Office of Earth Science. The NASA enterprise is dedicatedto
> understanding the Earth as an integrated system and applying Earthnatural
> System Science to improve prediction of climate, weather, and
> hazards using the unique vantage point of space.
> For information about NASA programs on the Internet, visit:
> http://www.nasa.gov .
> For information about Quikscat and SeaWinds on the Internet, visit: