Updated version of GAIM model goes operational

May 02, 2008

An updated version of the Global Assimilation of Ionospheric Measurements (GAIM) model went operational at the Air Force Weather Agency (AFWA) on February 22, 2008. The operational GAIM program has been under development since 1999 by the U.S. Department of Defense and is managed by the Naval Research Laboratory’s (NRL) Space Science Division. This new version of GAIM is capable of ingesting ultraviolet (UV) data sets from DMSP satellites.

GAIM uses a physics-based model as the basis for assimilating a diverse set of near real-time ionospheric measurements. The ionospheric specifications and forecasts that GAIM generates are in the form of three-dimensional electron density distributions from 90 km to geosynchronous altitudes (35,000 km). The first operational version of GAIM, which went operational at AFWA in December 2006, assimilated slant-TEC observations from GPS ground receiver sites, bottom-side electron density profiles from ionosondes, and in-situ electron density observations from the operational Defense Meteorological Satellite Program (DMSP).

The new operational version of GAIM can assimilate ultraviolet (UV) observations from DMSP sensors, including the Special Sensor Ultraviolet Limb Imager (SSULI), which has been developed by NRL’s Space Science Division. Scientists at NRLs’ Space Science Division were instrumental in adding these additional assimilative capabilities to the new operational version of GAIM.

Source: Naval Research Laboratory

Explore further: Magnitude-7.2 earthquake shakes Mexican capital

add to favorites email to friend print save as pdf

Related Stories

Egypt archaeologists find ancient writer's tomb

1 hour ago

Egypt's minister of antiquities says a team of Spanish archaeologists has discovered two tombs in the southern part of the country, one of them belonging to a writer and containing a trove of artifacts including reed pens ...

Ex-Apple chief plans mobile phone for India

1 hour ago

Former Apple chief executive John Sculley, whose marketing skills helped bring the personal computer to desktops worldwide, says he plans to launch a mobile phone in India to exploit its still largely untapped ...

NASA's space station Robonaut finally getting legs

1 hour ago

Robonaut, the first out-of-this-world humanoid, is finally getting its space legs. For three years, Robonaut has had to manage from the waist up. This new pair of legs means the experimental robot—now stuck ...

Health care site flagged in Heartbleed review

14 hours ago

People with accounts on the enrollment website for President Barack Obama's signature health care law are being told to change their passwords following an administration-wide review of the government's vulnerability to the ...

Airbnb rental site raises $450 mn

14 hours ago

Online lodging listings website Airbnb inked a $450 million funding deal with investors led by TPG, a source close to the matter said Friday.

Recommended for you

Magnitude-7.2 earthquake shakes Mexican capital

Apr 18, 2014

A powerful magnitude-7.2 earthquake shook central and southern Mexico on Friday, sending panicked people into the streets. Some walls cracked and fell, but there were no reports of major damage or casualties.

User comments : 0

More news stories

China says massive area of its soil polluted

A huge area of China's soil covering more than twice the size of Spain is estimated to be polluted, the government said Thursday, announcing findings of a survey previously kept secret.

UN weather agency warns of 'El Nino' this year

The UN weather agency Tuesday warned there was a good chance of an "El Nino" climate phenomenon in the Pacific Ocean this year, bringing droughts and heavy rainfall to the rest of the world.

NASA's space station Robonaut finally getting legs

Robonaut, the first out-of-this-world humanoid, is finally getting its space legs. For three years, Robonaut has had to manage from the waist up. This new pair of legs means the experimental robot—now stuck ...

Ex-Apple chief plans mobile phone for India

Former Apple chief executive John Sculley, whose marketing skills helped bring the personal computer to desktops worldwide, says he plans to launch a mobile phone in India to exploit its still largely untapped ...

Filipino tests negative for Middle East virus

A Filipino nurse who tested positive for the Middle East virus has been found free of infection in a subsequent examination after he returned home, Philippine health officials said Saturday.

Egypt archaeologists find ancient writer's tomb

Egypt's minister of antiquities says a team of Spanish archaeologists has discovered two tombs in the southern part of the country, one of them belonging to a writer and containing a trove of artifacts including reed pens ...