NASA Goddard scientists present new results at Fall AGU meeting

December 13, 2000

New Earth science insights by scientists at NASA's Goddard Space Flight Center (Greenbelt, Md.) will be reported at the Fall 2000 American Geophysical Union meeting in San Francisco this week. Listed below are some of the discussions that are open to the news media. All presentations will be held at the Moscone Convention Center.

Lower Dust Absorption of Sunlight --
The ability of dust to absorb solar radiation and heat the atmosphere is one of the main uncertainties in climate modeling and the prediction of climate change. Dust absorption is not well known due to limitations of in situ measurements. Two new independent remote sensing techniques are discussed that assess the impact of dust on climate. Yoram Kaufman will present the results of his findings on Friday, December 15 at 1:30 p.m. in Room MC 123.

What Controls the Arctic Lower Stratosphere Temperature? --
Stratospheric temperature determines springtime ozone loss. This talk demonstrates for the first time how lower atmospheric weather and climate can change the temperature of the polar stratospheric regions. Paul Newman will present the results of his findings on Saturday, December 16 at 4:20 p.m. in Room MC 125.

Measurements and Predictions of Atmospheric Influences from the Very Large July 14-16, 2000, Solar Proton Event --
A large solar flare with an associated coronal mass ejection occurred in mid-July and caused a very large solar proton event at the earth between July 14-16, 2000. So far this is the largest solar storm of solar cycle 23. The solar proton fluxes were measured by instruments aboard the GOES-10 satellite and used in our proton energy deposition model to help quantify the energy input to the middle atmosphere during this large solar event. The measured and modeled impacts of this solar event will be compared and discussed in this paper. Charles Jackman will present the results of his findings on Monday, December 18 at 4:15 p.m. in Room MC 135.

Results from Terra, NASA's Earth Observing System --
NASA's Terra spacecraft, launched on December 18, 1999, marked a new phase in climate and global change research. Terra is the flagship observatory for the NASA's Earth Observing System and has scientific instruments to gain information about the Earth's land, oceans and atmospheres and their relation to climate change with unprecedented accuracy. John Ranson will present biospheric results at 8:30 a.m. Tuesday, December 19 in Room MC 301 and Yoram Kaufman will present the atmospheric results on the same day at 1:30 p.m. in Room MC 131.

What Causes the Break Up of Antarctic Ice Shelves? --
The dramatic disintegration of sections of the Antarctic ice shelves in recent years has been attributed to a rise in mean annual temperatures over the past half century, although no specific mechanism has been found linking the two. New findings identify the culprit: summertime surface meltwater fills small crevasses and drives them open, weakening the ice shelf and making it vulnerable to breakup by winds and tides. Christina Hulbe will present the new findings on Friday, December 15 at 11:05 a.m. in Room MC 104.

NASA/Goddard Space Flight Center

Related Climate Change Articles from Brightsurf:

Are climate scientists being too cautious when linking extreme weather to climate change?
Climate science has focused on avoiding false alarms when linking extreme events to climate change.

Mysterious climate change
New research findings underline the crucial role that sea ice throughout the Southern Ocean played for atmospheric CO2 in times of rapid climate change in the past.

Mapping the path of climate change
Predicting a major transition, such as climate change, is extremely difficult, but the probabilistic framework developed by the authors is the first step in identifying the path between a shift in two environmental states.

Small change for climate change: Time to increase research funding to save the world
A new study shows that there is a huge disproportion in the level of funding for social science research into the greatest challenge in combating global warming -- how to get individuals and societies to overcome ingrained human habits to make the changes necessary to mitigate climate change.

Sub-national 'climate clubs' could offer key to combating climate change
'Climate clubs' offering membership for sub-national states, in addition to just countries, could speed up progress towards a globally harmonized climate change policy, which in turn offers a way to achieve stronger climate policies in all countries.

Review of Chinese atmospheric science research over the past 70 years: Climate and climate change
Over the past 70 years since the foundation of the People's Republic of China, Chinese scientists have made great contributions to various fields in the research of atmospheric sciences, which attracted worldwide attention.

A CERN for climate change
In a Perspective article appearing in this week's Proceedings of the National Academy of Sciences, Tim Palmer (Oxford University), and Bjorn Stevens (Max Planck Society), critically reflect on the present state of Earth system modelling.

Fairy-wrens change breeding habits to cope with climate change
Warmer temperatures linked to climate change are having a big impact on the breeding habits of one of Australia's most recognisable bird species, according to researchers at The Australian National University (ANU).

Believing in climate change doesn't mean you are preparing for climate change, study finds
Notre Dame researchers found that although coastal homeowners may perceive a worsening of climate change-related hazards, these attitudes are largely unrelated to a homeowner's expectations of actual home damage.

Older forests resist change -- climate change, that is
Older forests in eastern North America are less vulnerable to climate change than younger forests, particularly for carbon storage, timber production, and biodiversity, new research finds.

Read More: Climate Change News and Climate Change Current Events is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to