Navigation Links
Unraveling the mystery of Saharan dust migration
Date:8/22/2013

Satellite pictures of Saharan dust clouds have been in the news all summer, but to Shankar Chellam, they have just raised more questions.

How much impact did the Saharan dust have on Houston's air? Is it more toxic than our home-grown dust?

Chellam, a professor in the department of civil and environmental engineering at the University of Houston's Cullen College of Engineering, is searching for answers to those and other questions.

Clouds of African dust often migrate across the Atlantic Ocean during summer months, affecting Houston's air quality from mid-June through mid-September. Chellam said it's especially prevalent in late August and early September.

The dust, whipped up by sandstorms in northwest Africa and carried by trade winds across the Atlantic Ocean, takes about 10 days to two weeks to reach the United States and, ultimately, Houston.

Chellam said he collaborates on the project with Joseph Prospero, professor emeritus of marine and atmospheric chemistry at the University of Miami.

Chellam became interested after he noticed "the most curious coincidence" as he was collecting data on industrial air pollution outside plants along the Houston Ship Channel in 2008.

He began the project expecting that the plants would emit a constant amount of pollution, as measured from just beyond their property lines. But he discovered that on some days they emitted relatively little, while emissions were much higher on other days.

"What we quickly realized was that the impact of the refineries varied with time," he said. "We naively had gone into our research expecting that if we took three months of data, we would get an average."

A five-day period in July and August 2008 showed a large variation. That coincided with an influx of Saharan dust, Chellam said.

To determine the actual impact of the Saharan dust required scientific detective work. Chellam and his team determined the "fingerprint" of the African dust, allowing the
'/>"/>

Contact: Jeannie Kever
jekever@uh.edu
713-743-0778
University of Houston
Source:Eurekalert

Page: 1 2

Related biology news :

1. Unraveling genetic networks
2. Unraveling the scientific basis of the infant feeding axiom breast is best
3. Unraveling the threads: Simplest cotton genome offers clues for fiber improvements
4. Lets get moving: Unraveling how locomotion starts
5. Unraveling biological networks
6. Scientists solve a 14,000-year-old ocean mystery
7. CSHL geneticists solve mystery of EEC Syndromes variable severity in children
8. Mystery solved: Why people on dialysis have increased risk of heart attack
9. Final chapter to 60-year-old blood group mystery
10. Los Alamos science sleuth on the trail of a Martian mystery
11. University of Miami geologists to address the mystery of an evolution gap in reef corals
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/16/2015)... HANOVER, Germany , March 16, 2015 /PRNewswire/ ... DERMALOG Identification Systems GmbH will present groundbreaking innovations ... Hanover, Germany . ... DERMALOG,s latest biometric innovation is well at ... the next generation e-gate made in ...
(Date:3/12/2015)... March 12, 2015 Beta ... identity and access management (IAM) solution for a ... With Beta System,s new IAM package, customers benefit ... gleaned from multiple IAM implementations across different industries. ... as well as any necessary services and consulting. ...
(Date:3/11/2015)...   The Sync Project™ today announced ... and harness music to improve health. The platform ... measurements of physiology, enabling the study of the ... populations. It is designed for medical and health ... studies and accelerate the discovery of the clinical ...
Breaking Biology News(10 mins):DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 2DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 3Beta Systems Fast Forward IAM Available Now: a Standardized IAM Package at a Fixed Price 2Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 2Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 3
... of Chicago Celiac Disease Center is hosting the 15th ... in Chicago. The symposium is the largest celiac disease ... which follows the 2011 conference in Oslo, Norway, is ... since 2006. The Chicago meeting seeks to address ...
... a continued increase in the proportion of its journal titles indexed ... JCR ), with 1,192 (approximately 77%) titles now indexed, up from ... largest share of journals in 50 categories. In the ... rank increased by 19% (4) and the number of Wiley titles ...
... Cancer Research Group (ACRG), an independent, not-for-profit company in ... The University of Hong Kong (HKU), jointly announced the ... in hepatocellular carcinoma (HCC), one of the most deadly ... . The study provides new insights into potential therapeutic ...
Cached Biology News:UChicago Celiac Disease Center to host international symposium 2Wiley announces increase in Impact Factors 2Wiley announces increase in Impact Factors 3Wiley announces increase in Impact Factors 4Wiley announces increase in Impact Factors 5Wiley announces increase in Impact Factors 6ACRG and BGI report new evidence for the genetic bases of liver cancer 2
(Date:3/25/2015)... , March 25, 2015 /PRNewswire/ - SQI Diagnostics Inc. ... that, as a result of recent discussions with certain ... shares of the Company, after dealing with certain matters ... special meeting of shareholders on March 26, 2015 (the ... the election of directors will take place when the ...
(Date:3/25/2015)... 25, 2015 Accelovance, a therapeutically focused contract ... "Best Contract Research Organization" at the upcoming Vaccine Industry ... This is the eighth consecutive year ... award, winning for "Best Contract Research Organization" in 2009, ... in 2013. "We,re excited to be a ...
(Date:3/25/2015)... IL (PRWEB) March 25, 2015 Having ... in the latter part of 2014, ITRA Global proudly ... Global, the International Tenant Representative Alliance, based in the ... to representing tenants and occupiers of commercial real estate. ... estate advisory firm in Poland that exclusively advises occupiers ...
(Date:3/25/2015)... , March 25, 2015  18 piglets born ... intense research by scientists in the College of Agriculture ... represent a breakthrough in the field of genetic ... the Department of Animal & Avian Sciences (ANSC) and ... ANSC, successfully produced genome-edited pigs using a recently ...
Breaking Biology Technology:SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 2SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 3SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 4SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 5Accelovance Nominated for 2015 Vaccine Industry Excellence (ViE) Awards 2International Organization Expands its Global Reach to Warsaw, Poland 2University of Maryland Researchers Successfully Produce Genome-edited Pigs Using Revolutionary Technology 2
... NEW YORK, April 16 NexGenix Pharmaceuticals, presented,data ... Annual Meeting of the AACR,in San Diego today. ... on NXD30001, one of several novel, radicicol-based,Hsp90 inhibitors ... in breast cancer tumor xenograft models,without evidence for ...
... April 16 Kosan Biosciences,Incorporated (Nasdaq: KOSN ... inhibitors demonstrating a high degree of target,specificity, strong ... tumor,tissue and significant antitumor activity and safety in ... protein chaperone that acts to stabilize and/or activate ...
... ROCKVILLE, Md., April 16 The Board of ... that Dr. Danong Chen has,been elected as the ... Chen,was previously the President and CEO of Tanox ... by Genentech in 2007.,Previously Dr. Chen was Vice-President ...
Cached Biology Technology:NexGenix Pharmaceuticals Presents Data on a Novel Small Molecule Inhibitor of Heat Shock Protein 90 (Hsp90) at the Annual Meeting of the American Association for Cancer Research (AACR); Scientific Advisory Board Chairman Tyler Jacks Named President-elect 2NexGenix Pharmaceuticals Presents Data on a Novel Small Molecule Inhibitor of Heat Shock Protein 90 (Hsp90) at the Annual Meeting of the American Association for Cancer Research (AACR); Scientific Advisory Board Chairman Tyler Jacks Named President-elect 3Kosan Presents Preclinical Data on Novel Third-Generation Hsp90 Inhibitors at AACR 2Kosan Presents Preclinical Data on Novel Third-Generation Hsp90 Inhibitors at AACR 3Kosan Presents Preclinical Data on Novel Third-Generation Hsp90 Inhibitors at AACR 4Danong Chen appointed CEO of Theranostics Health 2
... atoms at the 9, 10, 12, and 13 ... internal standard for the quantification of 13(S)-HODE by ... incubation of linoleic acid with plant and mammalian ... adhesion of tumor cells to the endothelium at ...
...
...
...
Biology Products: