Featured Research

from universities, journals, and other organizations

Field Tests Unite Weather And Climate Models

Date:
August 22, 2005
Source:
NASA/Goddard Space Flight Center
Summary:
Researchers from NASA’s Goddard Space Flight Center (GSFC) and several other government and academic institutions have created four new supercomputer simulations that for the first time combine their mathematical computer models of the atmosphere, ocean, land surface and sea ice.

Using ESMF, researchers have coupled an atmosphere model and an ocean model that had not interacted before. This image depicts the sea surface temperature after five iterations of the simulation. The collaborators on this field test are the Geophysical Fluid Dynamics Laboratory (GFDL) and the Massachusetts Institute of Technology (MIT).
Credit: Shep Smithline, GFDL; Chris Hill, MIT

Researchers from NASA’s Goddard Space Flight Center (GSFC) andseveral other government and academic institutions have created fournew supercomputer simulations that for the first time combine theirmathematical computer models of the atmosphere, ocean, land surface andsea ice. These simulations are the first field tests of the new EarthSystem Modeling Framework (ESMF), an innovative software system thatpromises to improve and accelerate U.S. predictive capability rangingfrom short-term weather forecasts to century-long climate changeprojections.

Although still under development, many organizations and researchinstitutions are starting to adopt ESMF. Under a partnership, groupsfrom NASA, the National Science Foundation (NSF), the National Oceanicand Atmospheric Administration (NOAA), the Department of Energy (DOE),the Department of Defense and research universities are using ESMF asthe standard for coupling their weather and climate models to achieve arealistic representation of the Earth as a system of interacting parts,unifying much of the modeling community. ESMF makes it easier to shareand compare alternative scientific approaches from multiple sources,uses remote sensing data more efficiently and eliminates the need forindividual agencies to develop their own coupling software.

“The development of large Earth system applications often spansinitiatives, institutions and agencies, and involves the geoscience,physics, mathematics and computer science communities. With ESMF, thesediverse groups can leverage common software to simplify modeldevelopment,” said NASA ESMF principal investigator Arlindo da Silva, ascientist in GSFC’s Global Modeling and Assimilation Office.

NASA’s Earth-Sun System Technology Office/Computational TechnologiesProject funds the field tests and overall ESMF development. Thepartners on the field tests are DOE’s Los Alamos National Laboratory(LANL), the Massachusetts Institute of Technology (MIT), NASA’s JetPropulsion Laboratory, NOAA’s Geophysical Fluid Dynamics Laboratory(GFDL) and National Centers for Environmental Prediction (NCEP), NSF’sNational Center for Atmospheric Research (NCAR) and the University ofCalifornia, Los Angeles (UCLA).

The newly completed field tests, known as interoperabilityexperiments, show that this new approach in coupling models can besuccessful. For instance, temperature and wind outputs are similararound the globe when ingesting data into an NSF-NASA atmosphere modelas they are for the atmosphere model used operationally by NOAA.Although most of the experiments would require exhaustive tuning andvalidation to be scientifically sound, they already show that ESMF canbe used to assemble coupled applications quickly, easily and withtechnical accuracy.

“These interoperability experiments illustrate the role ESMF canplay in integrating the national Earth science resources,” da Silvasaid. “Using existing data assimilation technology from NCEP, thefinite-volume Community Atmosphere Model, or fvCAM, was able to ingestconventional and satellite observations, a capability that could openthe door to using the fvCAM for weather as well as climate prediction.”The fvCAM, which includes land surface capabilities, was developed byNCAR, with key components from GSFC.

The second experiment combines NCEP’s data assimilation technologywith the Aries atmosphere model originally developed by the NASASeasonal-to-Interannual Prediction Project. Aries is typically coupledwith an ocean model to run experimental forecasts of phenomena such asEl Niño and its effects on precipitation. Among additional advantages,the two field tests enable the intercomparison of systems for satellitedata assimilation.

The coupled experiments have many other potential applications. Thethird experiment, combining a GFDL atmosphere-land-ice model with anMIT ocean-sea ice model (known as MITgcm), may ultimately bring newinsights into ocean uptake of carbon dioxide and other importantatmospheric gases and how this process affects the climate.

In an early independent adoption of ESMF technology, UCLAresearchers have successfully coupled their Atmospheric GeneralCirculation Model to the MITgcm for the first time and updated aprevious coupling to the LANL Parallel Ocean Program model. They madeexperimental predictions of the El Niño/Southern Oscillations with thecoupled models using initial states provided by JPL’s Estimating theCirculation and Climate of the Ocean (ECCO) project. These preliminaryresults validate ESMF performance in terms of scientific fidelity andsupport the importance of ECCO products for improving short-termclimate forecasts.

Demonstrations of the software and the field tests are taking placeat the 4th ESMF Community Meeting at MIT in Cambridge, Mass., July20–22. Reaching beyond the ESMF partnership, the research team releasesthe software to the scientific community via the Internet. NCAR, homeof the core implementation team, is scheduled to release ESMF Version2.2.0 this month.


Story Source:

The above story is based on materials provided by NASA/Goddard Space Flight Center. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Goddard Space Flight Center. "Field Tests Unite Weather And Climate Models." ScienceDaily. ScienceDaily, 22 August 2005. <www.sciencedaily.com/releases/2005/08/050819093711.htm>.
NASA/Goddard Space Flight Center. (2005, August 22). Field Tests Unite Weather And Climate Models. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2005/08/050819093711.htm
NASA/Goddard Space Flight Center. "Field Tests Unite Weather And Climate Models." ScienceDaily. www.sciencedaily.com/releases/2005/08/050819093711.htm (accessed August 20, 2014).

Share This




More Computers & Math News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ballmer Leaves Microsoft's Board, Has Advice For Nadella

Ballmer Leaves Microsoft's Board, Has Advice For Nadella

Newsy (Aug. 19, 2014) — In a letter to Microsoft CEO Satya Nadella, Ballmer said he's leaving the board of directors and offered tips on how the company can be successful. Video provided by Newsy
Powered by NewsLook.com
What Google Can Gain From Special Accounts For Children

What Google Can Gain From Special Accounts For Children

Newsy (Aug. 19, 2014) — Google will reportedly offer official accounts for children younger than 13 years old. Video provided by Newsy
Powered by NewsLook.com
Breakingviews: Ebola's Economic Impact Could Eclipse SARS

Breakingviews: Ebola's Economic Impact Could Eclipse SARS

Reuters - Business Video Online (Aug. 18, 2014) — The virus ravaging Africa has yet to spread elsewhere. Yet Asia’s SARS crisis in 2003 showed how changes to behaviour can hurt the economy more than the actual disease, says Breakingviews' Una Galani. Video provided by Reuters
Powered by NewsLook.com
Twitter Users Up In Arms After 'Favorites' Show Up In Feeds

Twitter Users Up In Arms After 'Favorites' Show Up In Feeds

Newsy (Aug. 17, 2014) — Twitter is testing a feature on some users that shows favorited tweets from people they follow in their own timeline, the same way a retweet appears. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins