Navigation Links
PODEX experiment to reshape future of atmospheric science
Date:1/16/2013

ically change the polarization of reflected sunlight.

Q: What can polarimetry tell us about aerosols?

A: Aerosols are a tough problem. Unlike clouds, when looking at Earth from space you really have to look hard to see them. You're often looking at a subtle signal and that makes it hard to be quantitative and accurate. Data from MODIS (radiometers aboard NASA's Terra and Aqua satellites) are of great value, but interpretation of that data depends on educated guesses regarding the types of aerosols in a particular scene, which significantly affects the conclusions.

In the case of aerosols, polarimetry provides a way to estimate their composition from space, which has not previously been possible. With measurements that discriminate the types of aerosols that are present, we eliminate a significant source of uncertainty.

Q: What can polarimetry tell us about clouds?

A: Clouds composed of liquid droplets or ice crystals both modulate the planet's radiation budget and directly affect climate.

For clouds composed of liquid droplets, the size and quantity of the drops determine how much solar radiation they will reflect. For example, low-level stratocumulus clouds cover vast areas of the ocean and strongly regulate the heating of the ocean by blocking solar radiation before it gets to the ocean surface. Polarimetry measurements from various angles offer the promise of more robust measurements of droplet size, which can range in diameter from about 10-30 micrometers or more. Even relatively small differences can be significant for climate.

For clouds composed of ice crystals, the radiative properties of the clouds are quite sensitive to crystal size, quantity and also shape. We learned from previous fieldwork that the size of particles in ice clouds is quite variable, spanning a large range compared to liquid clouds. Cirrus clouds, for example, can be composed of ice crystals
'/>"/>

Contact: Kathryn Hansen
kathryn.h.hansen@nasa.gov
301-286-1046
NASA/Goddard Space Flight Center
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. Experiments may understate plant responses to climate
2. Foundational concept of ecology tested by experiment
3. Nicole George wins 2012 Journal of Experimental Biology Outstanding Paper Prize
4. Experiment finds ulcer bugs Achilles heel
5. The future of plant science - a technology perspective
6. The future of plant science a technology perspective
7. Is seaweed the future of biofuel?
8. Algae biofuels: the wave of the future
9. Researchers identify Achilles heel of dengue virus, target for future vaccines
10. Desert to Rainforest global classroom links future teachers, classrooms in Phoenix and Panama
11. New technologies for a blue future
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
PODEX experiment to reshape future of atmospheric science
(Date:9/18/2014)... that prompts millions of Americans to undertake jaunts into the ... a little longer within a century, according to new research. ... areas of the United States as summer temperatures linger later ... Global Ecology and Biogeography . For instance, the paper ... tree of New Hampshire could change color one to ...
(Date:9/18/2014)... genetic information is stored in DNA, tiny strands of ... our bodies. To express this genetic data, our DNA ... instructions into proteins that perform tasks in our cells. ... type of RNA molecule. Unlike all other known RNAs, ... Although circRNA molecules are abundant, little has been known ...
(Date:9/18/2014)... AZ, Sept. 18, 2014 -- Arizona turned its newborn ... just a few short months, earning it the first-ever Newborn ... The March of Dimes presented Will Humble, M.P.H., Arizona,s Department ... held here today. Mr. Humble established a policy of full ... to send newborn blood samples to the lab for analysis, ...
Breaking Biology News(10 mins):Fall foliage season may be later, but longer on warmer Earth 2Fall foliage season may be later, but longer on warmer Earth 3Fall foliage season may be later, but longer on warmer Earth 4Scientists find how mysterious 'circular RNA' is formed, claim muscular dystrophy link 2March of Dimes honors Arizona with first-ever newborn screening award 2March of Dimes honors Arizona with first-ever newborn screening award 3
... rise, so does the pressure on the plant kingdom. The ... will absorb some of the extra CO 2 and ... now, researchers have hypothesized about one major roadblock: nitrogen. ... they take up from the atmosphere. The more they get, ...
... Wash.There really is a balance of nature, but as accepted ... Washington State University researchers writing in the journal Nature ... typical of organic farms work better at fighting pests and ... pests and their natural enemies in potatoes and found organic ...
... Alberta, June 30, 2010 Innovotech Inc. (TSX-V: IOT), ... has secured funding in excess of $900,000 from Agriculture ... its unique, environmentally friendly seed treatment and plant spray ... infections. "With the potential to increase crop yields ...
Cached Biology News:Nitrogen pollution alters global change scenarios from the ground up 2Nitrogen pollution alters global change scenarios from the ground up 3'Balanced' ecosystems seen in organic ag better at controlling pests 2
(Date:9/18/2014)... September 18, 2014 ... http://www.researchandmarkets.com/research/czvg3s/biocompatible ) has announced the addition ... Global Strategic Business Report" report ... ,This report analyzes the worldwide markets ... by the following Product Segments: Polymeric ...
(Date:9/18/2014)... Washington, D.C. (PRWEB) September 18, 2014 ... Dick Durbin and Sen. Jim Risch for National Lab ... research projects from across the national laboratory system. Durbin ... Caucus, which aims to increase awareness of the reach ... breakthrough technologies and discoveries to address some of our ...
(Date:9/18/2014)... 2014 Research and Markets ... N-acetylcysteine Industry Report 2014" report to their ... Report 2014 is a professional and in-depth study ... industry. The report provides a basic ... and industry chain structure. The N-acetylcysteine market analysis ...
(Date:9/18/2014)... , Sept. 18, 2014 Research ... "Global Companion Diagnostics (Polymerase Chain Reaction, In-situ hybridization, ... report to their offering. The global ... CAGR of 22.7% from 2014 to 2019. Factors such ... growing adoption of companion diagnostics by the pharmaceutical industry, ...
Breaking Biology Technology:Biocompatible Materials - Global Strategic Business Report 2014 2Biocompatible Materials - Global Strategic Business Report 2014 3Lab Day Highlight Labs' Contribution to U.S. Competitiveness and Innovation 2Lab Day Highlight Labs' Contribution to U.S. Competitiveness and Innovation 3Global N-acetylcysteine Industry Report 2014 2Global Companion Diagnostics (Polymerase Chain Reaction, In-situ hybridization, Immunohistochemistry) Market - Trends & Forecasts to 2019 2Global Companion Diagnostics (Polymerase Chain Reaction, In-situ hybridization, Immunohistochemistry) Market - Trends & Forecasts to 2019 3
... Arpida Ltd,(SIX: ARPN) announced today its financial results for the six ... to date, - Regulatory setback for intravenous iclaprim in ... - Company restructuring completed, , Cash ... CFO Harry Welten, MBA, commented: "Our cost-saving measures ...
... , , , , ... the healthcar e field using technology in ... patient care, what isn,t clear is the exact role technology will play ... the right information, be it clinical or administrative, at the right time, ...
... particles have been used to bring stem cells to ... to increase the capacity of cells to repair damaged ... disciplinary research, published in The Journal of the ... technique where endothelial progenitor cells a type of ...
Cached Biology Technology:Arpida Reports Interim Results For Six Months to 30 June 2009 2Healthcare Continues to Use OnBase in 'Meaningful' Ways 2Healthcare Continues to Use OnBase in 'Meaningful' Ways 3Healthcare Continues to Use OnBase in 'Meaningful' Ways 4Nanomagnets guide stem cells to damaged tissue 2
...
... Perkin Elmer UltraVIEW system and want to enjoy ... iQ software? No problem. Our experienced team ... existing microscope, lasers, Sutter filter wheel, Piezo Stage ... with our precision controller unit and workstation... for ...
... The DNA Engine Dyad instrument is ... Featuring MJ's world-class thermal performance, ... color display, as well as point-and-click navigation ... The Dyad can be easily and economically ...
...
Biology Products: