| Title |
Toward a better understanding and quantification of methane emissions from shale gas development
|
|---|---|
| Published in |
Proceedings of the National Academy of Sciences of the United States of America, April 2014
|
| DOI | 10.1073/pnas.1316546111 |
| Pubmed ID | |
| Authors |
Dana R. Caulton, Paul B. Shepson, Renee L. Santoro, Jed P. Sparks, Robert W. Howarth, Anthony R. Ingraffea, Maria O. L. Cambaliza, Colm Sweeney, Anna Karion, Kenneth J. Davis, Brian H. Stirm, Stephen A. Montzka, Ben R. Miller |
| Abstract |
The identification and quantification of methane emissions from natural gas production has become increasingly important owing to the increase in the natural gas component of the energy sector. An instrumented aircraft platform was used to identify large sources of methane and quantify emission rates in southwestern PA in June 2012. A large regional flux, 2.0-14 g CH4 s(-1) km(-2), was quantified for a ∼ 2,800-km(2) area, which did not differ statistically from a bottom-up inventory, 2.3-4.6 g CH4 s(-1) km(-2). Large emissions averaging 34 g CH4/s per well were observed from seven well pads determined to be in the drilling phase, 2 to 3 orders of magnitude greater than US Environmental Protection Agency estimates for this operational phase. The emissions from these well pads, representing ∼ 1% of the total number of wells, account for 4-30% of the observed regional flux. More work is needed to determine all of the sources of methane emissions from natural gas production, to ascertain why these emissions occur and to evaluate their climate and atmospheric chemistry impacts. |
X Demographics
The data shown below were collected from the profiles of 133 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 22 | 17% |
| Australia | 12 | 9% |
| United Kingdom | 10 | 8% |
| Netherlands | 9 | 7% |
| Sweden | 7 | 5% |
| Canada | 4 | 3% |
| Ireland | 3 | 2% |
| Mexico | 2 | 2% |
| Belgium | 2 | 2% |
| Other | 5 | 4% |
| Unknown | 57 | 43% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 102 | 77% |
| Scientists | 24 | 18% |
| Science communicators (journalists, bloggers, editors) | 6 | 5% |
| Practitioners (doctors, other healthcare professionals) | 1 | <1% |
Mendeley readers
The data shown below were compiled from readership statistics for 345 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 8 | 2% |
| United Kingdom | 4 | 1% |
| Netherlands | 2 | <1% |
| Canada | 2 | <1% |
| South Africa | 1 | <1% |
| Germany | 1 | <1% |
| Belgium | 1 | <1% |
| Mexico | 1 | <1% |
| Unknown | 325 | 94% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 79 | 23% |
| Student > Ph. D. Student | 73 | 21% |
| Student > Master | 50 | 14% |
| Student > Bachelor | 22 | 6% |
| Student > Doctoral Student | 19 | 6% |
| Other | 57 | 17% |
| Unknown | 45 | 13% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 81 | 23% |
| Earth and Planetary Sciences | 62 | 18% |
| Engineering | 38 | 11% |
| Agricultural and Biological Sciences | 17 | 5% |
| Energy | 16 | 5% |
| Other | 60 | 17% |
| Unknown | 71 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 438. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 01 August 2023.
All research outputs
#65,777
of 25,791,495 outputs
Outputs from Proceedings of the National Academy of Sciences of the United States of America
#1,620
of 103,757 outputs
Outputs of similar age
#435
of 241,489 outputs
Outputs of similar age from Proceedings of the National Academy of Sciences of the United States of America
#26
of 1,007 outputs
Altmetric has tracked 25,791,495 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 103,757 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 39.7. This one has done particularly well, scoring higher than 98% of its peers.
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We're also able to compare this research output to 1,007 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 97% of its contemporaries.