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Latest Data assimilation Stories

2011-12-23 04:16:59

NASA has awarded a contract to Science Systems and Applications, Inc. (SSAI) of Lanham, Md., for the Global Modeling and Assimilation Office (GMAO) scientific support services. The estimated maximum ordering value of this letter contract is $47 million, effective Feb. 1, 2012, and ending Jan. 31, 2017. GMAO develops and uses comprehensive global models and data assimilation systems to study land surface, the atmosphere and its components, and ocean biology. This contract supports projects...

2011-12-21 11:40:10

Every cloud has a silver lining: weather forecasting models could predict brain tumor growth Ever wondered how meteorologists can accurately predict the weather? They use complex spatiotemporal weather models, i.e. mathematical equations that track the motions of the atmosphere through time and space, and combine them with incoming data streams from weather stations and satellites. Now, an innovative new study published in BioMed Central's open access journal Biology Direct has determined...

2008-09-27 03:00:13

By Hoffman, Ross N Ponte, Rui M; Kostelich, Eric J; Blumberg, Alan; Szunyogh, Istvan; Vinogradov, Sergey V; Henderson, John M ABSTRACT Data assimilation approaches that use ensembles to approximate a Kalman filter have many potential advantages for oceanographic applications. To explore the extent to which this holds, the Estuarine and Coastal Ocean Model (ECOM) is coupled with a modern data assimilation method based on the local ensemble transform Kalman filter (LETKF), and a series of...

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2005-08-24 12:40:00

NASA -- The outlook for predicting the weather is improving. Beginning this month the complex computer programs used by forecasters are getting more data on temperatures, water vapor and gases in the air and on how the ground affects the weather. NASA and the National Oceanic and Atmospheric Administration (NOAA) today outlined research that has helped to improve the accuracy of medium-range weather forecasts in the Northern Hemisphere. NASA and NOAA scientists at the Joint Center for...


Word of the Day
out-herod
  • In the phrase to out-herod Herod, to be more violent than Herod (as represented in the old mystery plays); hence, to exceed in any excess of evil.
Herod refers to 'Herod the Great,' a Roman client king and 'a madman who murdered his own family and a great many rabbis.' According to the OED, the term is 'chiefly with allusion to Shakespeare's use' in Hamlet.
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