Navigation Links
Measurements of CO2 and CO in China's air indicate sharply improved combustion efficiency

releases energy by converting carbon to CO2, but some is only converted to CO, losing some of the available chemical energy. High-efficiency combustion processes, such as modern power plants and cars that meet current standards, produce little or no CO, and are thus both more energy-efficient and cleaner," said co-author J. William Munger, Senior Research Fellow at SEAS and at Harvard's Department of Earth and Planetary Sciences (EPS). "Inefficient processes like wood- and coal-burning in domestic stoves convert less than 90 percent of the carbon fuel to CO2, releasing the remainder as CO and wasting some of the energy. The combustion of outmoded industrial processes can fall somewhere in the middle. Knowing this, there's a lot we can learn from this chemical ratio in the air about combustion efficiency on the ground."

Over the period of studyand while controlling for daily, seasonal, and weather-induced fluctuationsthe data trends indicated increasing combustion efficiency in the Beijing region. Modernization of industrial boilers, replacing old vehicles with new ones meeting stricter standards, and closing of older industrial facilities can all contribute to this trend. (For more information, see the supplementary materials:

"The data indicate a trend toward cleaner, more efficient combustion in the Beijing region over several years leading up to the 2008 Olympics "when the government instituted particularly strict controls on pollution"and as far as we can tell so far, these gains have been maintained since the Olympics," said Munger.

The lead author of the study, Yuxuan Wang, is an Associate Professor in the Department of Environmental Science and Engineering at Tsinghua University and Principal Investigator of the Miyun atmospheric observatory. She completed her Ph.D. and po

Contact: Caroline Perry
Harvard University

Page: 1 2 3

Related biology news :

1. NIST issues human milk and blood serum SRMs for contaminant measurements
2. Carbon accounting from atmospheric measurements -- the aircraft perspective
3. UI researchers help to improve carbon measurements in global climate studies
4. Blueberries help fight artery hardening, lab animal study indicates
5. New variants found that indicate a predisposition to type 2 diabetes
6. Tiny mutation might help indicate proper dosage for half of all drugs
7. New research indicates plants can grow quickly or ward off hungry insects, but not both
8. Restaurant and packaged foods can have more calories than nutrition labeling indicates
9. New genetic research indicates Jewish priesthood has multiple lineages
10. Methyl bromide alternatives indicated for North Carolina tomato production
11. New study indicates smallpox vaccination effective for decades
Post Your Comments:
(Date:10/8/2015)... 8. Oktober 2015 Die Track ... Unternehmen des Bereiches Tracking, hat heute bekannt ... Gefängnisbehörde Virginias (Department of Corrections – DOC) ... für alle Strafen geliefert werden, die der ... Präsident für den Amerikanischen Kontinent der Track ...
(Date:10/7/2015)... -- --> --> According ... third quarter 2015 amounted to around 960 MSEK. This exceeds ... was communicated 20 August 2015. --> ... a continued growing demand for the company,s products, the revenues ... than during the third quarter. The revenue guidance for 2015 ...
(Date:10/6/2015)... 2015 Track Group, Inc. (OTCQX: TRCK), a ... signed a contract with the Virginia Department of Corrections ... of sentences under the Department,s oversight. Derek ... contract with the Virginia DOC will expand our footprint ... our position as a trusted leader in offender electronic ...
Breaking Biology News(10 mins):
... (Dec. 20, 2007) -- At its core, healthy neurological function ... via the synapse. Figuring out how the synapse traffics ... to understanding the function of the healthy and diseased brain. ... Cornell Medical College in New York City has spotted a ...
... East Anglia has discovered the existence of grandparent helpers in ... rarely occurs except in humans, has been observed in birds. ... a population on Cousin Island in the Seychelles has revealed ... themselves often help their children to raise grandchildren. The ...
... Ph.D, a University of Alabama at Birmingham (UAB) professor ... Czech Mind prize. The annual award is ... recipients often include Czech nationals working in other countries. ... to research and teach about the microbial environment of ...
Cached Biology News:
(Date:10/8/2015)... 2015 Celemics, a global pioneer of personalized ... American market with the establishment of Celemics America, Inc. ... Europe , has secured itself in the ... and sample preparation for DNA sequencing and genetic testing.  ... somatic genetic testing more accurately, quickly, and cost effectively ...
(Date:10/8/2015)... 2015  Today, DuPont and Caribou Biosciences, a ... jointly announced a strategic alliance. As part of ... patent portfolios, with DuPont receiving exclusive intellectual property ... crops, and non-exclusive rights in other agricultural and ... --> In addition, the alliance ...
(Date:10/8/2015)... , Oct. 8, 2015  Sigma-Aldrich Corporation ... Cerilliant ® brand within its Applied Diagnostics ... bile acid reference standards product line with ten ... routinely tested bile acids and their stable-labeled internal ... consist of lithocholic acid, taurocholic acid and native ...
(Date:10/7/2015)... 8, 2015 ... accounts for largest bioinformatics market share due ... discovery and development process says this research ... . --> ... of applications, the bioinformatics market is segmented ...
Breaking Biology Technology:
... materials to study their structure and behavior, thanks to work ... and the Lawrence Berkeley National Laboratory and published Aug. 14 ... will enable more detailed study of new types of materials ... The technique, called angle-resolved photoemission, has been used since ...
... Regeneron Pharmaceuticals, Inc. (Nasdaq: REGN ) today ... Food and Drug Administration (FDA) that the agency has ... of the EYLEA Biologics License Application (BLA) for the ... November 18, 2011, which is a three month extension ...
... Elsevier, a world-leading provider of scientific, technical and ... University of Singapore (NUS), a leading global university ... This "Hackathon", a 24-hour programming competition, encourages students ... the search and discovery process of scientific information. ...
Cached Biology Technology: