The results of their study from the 2009 NASA Student Airborne Research Program are published in the Aug. 4 online edition of the journal Remote Sensing Letters, (http://www.tandfonline.com/doi/abs/10.1080/01431161.2010.551550).
In brief, the students from Howard University and Georgia Institute of Technology flew over Southern California aboard NASA's DC-8 airborne science laboratory and operated NASA's MODIS and ASTER remote sensing instruments. The flight was guided by forecasts from the UI Center for Global and Regional Environmental Research (CGRER).
When processing the images they collected, the students found that using CGRER's regional model forecasts for local weather and air quality substantially improved sea surface temperature measurements and also increased the sensitivity of measurements over cities and areas covered by vegetation.
Using CGRER model results was found to be an improvement over standard approaches to calculating surface measurements from satellite images, which incorporate a one-size-fits-all average for weather and trace gas concentrations.
"This new approach can help improve the global satellite record of the Earth's surface and oceans, by taking better daily snapshots of how human activity affects them over time," Spak said. "This one change can improve our ability to accurately track a wide range of environmental questions, including urban heat islands, coastal algae blooms and the regrowth of deforested areas."
Spak and CGRER Co-director Greg Carmichael are working with NASA to apply the technique to improve satellite air pollution estimates.
Spak is an assistant professor with joint appointments in the UI Public Policy Center, School of Urban and Regional Planning, and the UI College of Engineering Department of Civil and Environmental Engineering.
STORY SOURCE: University of Iowa News Services, 300 Plaza Centre One, Suite 371, Iowa City, Iowa 52242-2500
MEDIA CONTACT: Gary Galluzzo, 319-384-0009, firstname.lastname@example.org
Gary Galluzzo | Newswise Science News
How does the loss of species alter ecosystems?
18.05.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
Excess diesel emissions bring global health & environmental impacts
16.05.2017 | International Institute for Applied Systems Analysis (IIASA)
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy