Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Newly proposed reference datasets improve weather satellite data quality

10.01.2017

UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration

"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of satellites whizzing around Earth collecting mountains of data makes such constant and wide-ranging access to accurate weather forecasts possible. Just one satellite, such as the National Oceanic and Atmospheric Administration's (NOAA) Geostationary Operational Environmental Satellite-R that launched in 2016, can collect 3.5 terabytes of weather data per day.


This is an artist's rendition of NASA's JPSS satellite, which carries a microwave instrument that can monitor Earth's weather from space.

Credit: NASA/NOAA

But how do scientists ensure satellite-measured weather data is good? They can compare live data against high-quality reference data from in-orbit satellites. Making such resources available is a goal of the Global Space-based Inter-Calibration System (GSICS), an international consortium of 15 satellite agencies that collaborate on monitoring satellites and developing methods to ensure the quality of their weather data.

"The quality of the satellite data drives how prepared nations--and the world--can be when it comes to weather-related events," said GSICS Deputy Director Manik Bali, a faculty research assistant in the Earth System Science Interdisciplinary Center (ESSIC), a joint center of the University of Maryland and NASA's Goddard Space Flight Center. Bali is also a NOAA affiliate.

The World Meteorological Organization (WMO), a United Nations specialized agency and the Coordination Group for Meteorological Satellites (CGMS), launched GSICS in 2005. ESSIC contributes manpower and infrastructure support to GSICS, including the servers needed to share data between GSICS collaborators worldwide, enabling the monitoring of weather satellites among member agencies and the correction of measurement anomalies in real time.

One GSICS breakthrough came in 2011, with a paper demonstrating that a GSICS-developed algorithm corrected a temperature difference of approximately 3 degrees Celsius between two satellites. The results were published in the Bulletin of the American Meteorological Society. While that temperature difference may sound small, the world's nations recently negotiated the Paris Climate Agreement, which seeks to limit global warming to a maximum of 2 degrees Celsius above pre-industrial temperatures.

Also in 2011, Cheng-Zhi Zou, a NOAA research scientist and former chair of the GSICS Microwave Subgroup, intercalibrated 38 years of climate data--starting in 1979--to generate what NOAA calls a fundamental climate data record (FCDR). The FCDR was published in the Journal of Geophysical Research: Atmospheres.

At the American Geophysical Union's (AGU) fall meeting in December 2016, Bali demonstrated that Zou's FCDR was suitable for monitoring microwave satellites, including the Advanced Technology Microwave Sounder onboard NOAA/NASA's Joint Polar Satellite System (JPSS). When launched, JPSS will replace the aging National Polar-orbiting Operational Environmental Satellite System and provide full global monitoring coverage twice a day. Bali expects the FCDR will help monitor and adjust data gathered during JPSS missions.

At the recent AGU meeting, Bali also showed that the European Organisation for the Exploitation of Meteorological Satellites' Infrared Atmospheric Sounding Interferometer (IASI) and NASA's Atmospheric Infrared Sounder exhibit sufficiently stable behavior to serve as in-orbit references. Calibrating against these satellites can reduce errors from 2 degrees Celsius to below 0.1 degrees Celsius.

"This has given tremendous confidence to the GSICS calibration community that uses IASI-A as an in-orbit reference to monitor its geostationary satellites," said Bali.

Moving forward, Bali's colleagues at ESSIC will continue to support the science goals of the JPSS satellite mission through the Cooperative Institute for Climate and Satellites (CICS), which is managed by ESSIC and was created in 2009 through a $93 million agreement with NOAA.

"ESSIC's leadership in supporting these global initiatives is very important," said Bali. "Looking ahead, I see a far greater interaction between NOAA and ESSIC/CICS, which will help NOAA lead the global satellite calibration efforts."

###

The presentation, "Selection of on-orbit references for Global Space Based Inter-Calibration System" by Manik Bali, Fuzhong Weng, Lawrence E Flynn, Cheng-Zhi Zou, Ralph Ferraro and Thomas Pagano was given on December 13, 2016, at the American Geophysical Union Fall Meeting.

The paper, "The Global Space-Based Inter-Calibration System" by M. Goldberg, G. Ohring, J. Butler, C. Cao, R. Datla, D. R. Doelling, V. Gärtner, T. Hewison, B. Iacovazzi, D. Kim, T. Kurino, J. Lafeuille, P. Minnis, D. Renaut, J. Schmetz, D. Tobin, L. Wang, F. Weng, X. Wu, F. Yu, P. Zhang, and T. Zhu was published in the April 2001 issue of the Bulletin of the American Meterological Society.

The paper, "Intersatellite calibration of AMSU-A observations for weather and climate applications" by Cheng-Zhi Zou and Wenhui Wang was published on December 13, 2011 in the Journal of Geophysical Research: Atmospheres.

Media Relations Contact: Irene Ying, 301-405-5204, zying@umd.edu

University of Maryland
College of Computer, Mathematical, and Natural Sciences
2300 Symons Hall
College Park, MD 20742
http://www.cmns.umd.edu
@UMDscience

About the College of Computer, Mathematical, and Natural Sciences

The College of Computer, Mathematical, and Natural Sciences at the University of Maryland educates more than 7,000 future scientific leaders in its undergraduate and graduate programs each year. The college's 10 departments and more than a dozen interdisciplinary research centers foster scientific discovery with annual sponsored research funding exceeding $150 million.

Media Contact

Irene Ying
zying@umd.edu
301-405-5204

 @UMDRightNow

http://www.umdrightnow.umd.edu/ 

Irene Ying | EurekAlert!

More articles from Physics and Astronomy:

nachricht NASA mission surfs through waves in space to understand space weather
25.07.2017 | NASA/Goddard Space Flight Center

nachricht A new level of magnetic saturation
25.07.2017 | Georg-August-Universität Göttingen

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Carbon Nanotubes Turn Electrical Current into Light-emitting Quasi-particles

Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers

Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...

Im Focus: Flexible proximity sensor creates smart surfaces

Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.

At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...

Im Focus: 3-D scanning with water

3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects

A global team of computer scientists and engineers have developed an innovative technique that more completely reconstructs challenging 3D objects. An ancient...

Im Focus: Manipulating Electron Spins Without Loss of Information

Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.

For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...

Im Focus: The proton precisely weighted

What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.

To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Closing the Sustainability Circle: Protection of Food with Biobased Materials

21.07.2017 | Event News

»We are bringing Additive Manufacturing to SMEs«

19.07.2017 | Event News

The technology with a feel for feelings

12.07.2017 | Event News

 
Latest News

NASA mission surfs through waves in space to understand space weather

25.07.2017 | Physics and Astronomy

Strength of tectonic plates may explain shape of the Tibetan Plateau, study finds

25.07.2017 | Earth Sciences

The dense vessel network regulates formation of thrombocytes in the bone marrow

25.07.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>