![An orange tethered balloon is being launched at the Poker Flat facility](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/irradiance_a.jpg) |
Interannual
Variability of UV Irradiance, Ozone and Aerosol Chemistry in the
Arctic:
The NOAA-supported project "Interannual Variability of UV Irradiance,
Ozone and Aerosol Chemistry in the Arctic" is a collaborative effort
of scientists to improve the monitoring and analysis of the UV irradiance
climatology in Alaska.
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![Single zebra mussel showing striping and byssal threads](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/zebramussels_a.jpg) |
The
Origin of the Great Lakes Zebra Mussels:
Since the zebra mussels first invaded the Great Lakes in 1988,
research has centered on understanding the impacts these mussels
have had on the Great Lakes' economy and ecology.
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![US map showing Tornado Alley, which encompasses parts of TX, OK, KS, CO, NE, IA, SD, MN](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/climatology_a.jpg) |
Clues
from Climatology: When and Where Do Tornadoes Occur?:
Tornadoes that hit Washington, D.C. suburbs Sept. 22 illustrate
a fact often stated by weather forecasters: "Tornadoes can and do
happen any time of the year in just about any location."
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![The American Lobster is still abundant.](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/lobster_a.jpg) |
Why
Can We Still Fish for American Lobsters?:
The American lobster (Homarus americanus) is one of
the highest valued species exploited by New England fisheries.
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![At sea; Ronald H. Brown is NOAA's state-of-the-art oceanographic and atmospheric research platform.](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/ronbrown_a.jpg) |
NOAA's
Floating Laboratory Conducts Science at Sea:
Singer James Brown may bill himself as the "Hardest Working
Man in Show Business," but among ships, the title of "Hardest Working
Research Vessel" could easily be bestowed upon NOAA's Ronald
H. Brown.
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![Martin Posey kneels in the flat muddy marshes off the Cape Fear River](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/bottomlife_a.jpg) |
BOTTOM
LIFE-- Posey Digs Deep to Unlock Nature’s Secrets:
As a tiny wave ripples onto a sandy marsh off the Cape Fear
River, North Carolina Sea Grant researcher Martin Posey stands knee
deep in soft mud.
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![Map of Africa, Europe and Asia with icons indicating locations of reported climate-weather impacts on a selected day](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/cip_a.jpg) |
Three Years
of Impact: Climate Information Project Climate-Weather Impact Updates:
Human activity is guided, if not forged by, the various climates
in which we live.
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![Bathymetric map of the seafloor, centered on the San Clemente Fault. The average offset on the fault is 58 kilometers.](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/faults_a.jpg) |
Submarine
Faults of the San Andreas: Southern California's Hidden Hazards:
The San Andreas fault system forms the boundary where the Pacific
and North American plates grind past each other at 5.5 cm/year.
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![Fossil-fueled electric power plant in Thomas Hill, MO](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/ozone_a.jpg) |
Advancing
the understanding of ground-level ozone pollution:
Research led by scientists at the NOAA Aeronomy Laboratory
has illustrated two major factors that could be used to help guide
future programs designed to clean up the air downwind of the Nation's
fossil-fuel burning electric power plants: the size of the power
plant, and the location of the power plant.
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![Free-diver trains in practice run](https://webarchive.library.unt.edu/eot2008/20090506072855im_/http://www.oar.noaa.gov/spotlite/archive/diving_a.jpg) |
Diving
to Great Depths:
If you're interested in how the body reacts to severe stress,
whether it be encountered at great depths, high altitude or heavy
exercise, researcher Claes Lundgren says, "It is useful to push
the body to its limits."
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