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AGU journal highlights -- Feb. 1, 2007

Researchers modeled Martian radiation environment to determine if life can survive; three-dimensional models improve predictions for glacial isostatic adjustments. A new method using seismic noise images volcanoes in three dimensions, offering improved volcanic hazard assessment.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateFeb 1, 2007

Dust may dampen hurricane fury

Researchers at University of Wisconsin-Madison found a link between dust storms and hurricane frequency in Atlantic, suggesting that dust may help suppress brewing hurricanes. The study suggests that long-term changes in hurricanes may be related to multiple factors.

SourceUniversity of Wisconsin-Madison·JournalPhysical Review Letters·DateOct 10, 2006

Human activities are boosting ocean temperatures in areas where hurricanes form, new study finds

A new study finds that human-caused increases in greenhouse gas concentrations are primarily responsible for rising ocean temperatures in key hurricane breeding grounds of the Atlantic and Pacific oceans. The research used 22 different computer models to show a strong link between warming sea surface temperatures and human activities.

SourceNational Center for Atmospheric Research/University Corporation for Atmospheric Research·JournalProceedings of the National Academy of Sciences·DateSep 11, 2006

AGU Journal highlights -- Aug. 29, 2006

Climate scientists analyzed data to determine that global warming is increasing Atlantic hurricane intensity. Additionally, the water cycle is changing, with seasonal trends shifting into spring. The study also found a connection between atmospheric tides and weather in the tropics influencing the equatorial ionosphere.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateAug 29, 2006

A nursery for hurricanes

University of Utah meteorologist Ed Zipser leads a NASA mission to study African weather disturbances that intensify into hurricanes. The study aims to improve hurricane prediction and understanding of extreme events like category 5 storms.

AGU journal highlights -- 24 July 2006

Researchers found Alpine glaciers lost 35% of surface area between 1850-1970, with potential disappearance by 2100 under 3 degree Celsius warming. Meanwhile, weekly wobble in Earth's rotation pole was observed and predicted using atmospheric models, explaining centimeter-level displacements during the 2005-2006 winter season.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateJul 24, 2006

Be warned

A recent study conducted by Dr. Scott Sheridan at Kent State University found that almost 90% of residents aware of heat warnings took no action to avoid health issues. The study suggests that heat warning systems may need to be revised to better target vulnerable populations.

Global warming surpassed natural cycles in fueling 2005 hurricane season, NCAR scientists conclude

NCAR scientists conclude that global warming surpassed natural cycles in fueling the 2005 hurricane season. The study found that ocean temperatures, particularly in the tropical North Atlantic, were record-high and attributed to global warming, accounting for 0.8 degrees F of the rise.

Hurricanes and the US Gulf Coast

The American Geophysical Union convened an interdisciplinary conference to discuss the science behind hurricane protection and rebuilding on the US Gulf Coast. Key findings include the need for improved seasonal forecasts, better wind data, and enhanced shoreline topography to simulate storm surge and flooding probabilities.

Monster hurricanes

Researchers found that only half of the increase in strong hurricanes over the past 25 years can be attributed to rising water temperatures, suggesting other factors are at play. A temperature threshold must be crossed before a weak tropical cyclone can become a monster hurricane.

SourceUniversity of Virginia·JournalGeophysical Research Letters·DateMay 10, 2006

Katrina exposed emergency response weakness

The article discusses how Hurricane Katrina's aftermath revealed poor planning and decision-making by public officials. It recommends changes to the national emergency management system to improve disaster response and recovery. The lessons from Katrina can only be learned by shedding light on current policy and practices.

SourceSAGE·JournalThe Annals of the American Academy of Political and Social Science·DateMar 30, 2006

Understanding the tsunami

The study highlights the co-dependence of mortality risk and poverty, with lower-income countries suffering greater losses due to inadequate infrastructure and emergency response systems. The Earth Institute at Columbia University is a leading academic center for integrated study of the Earth's environment and society.