Zobrazeno 1 - 10
of 97
pro vyhledávání: '"K J, Davis"'
Autor:
D. J. Varon, D. J. Jacob, B. Hmiel, R. Gautam, D. R. Lyon, M. Omara, M. Sulprizio, L. Shen, D. Pendergrass, H. Nesser, Z. Qu, Z. R. Barkley, N. L. Miles, S. J. Richardson, K. J. Davis, S. Pandey, X. Lu, A. Lorente, T. Borsdorff, J. D. Maasakkers, I. Aben
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 7503-7520 (2023)
We quantify weekly methane emissions at 0.25∘ × 0.3125∘ (≈25 × 25 km2) resolution from the Permian Basin, the largest oil production basin in the US, by inverse analysis of satellite observations from the TROPOspheric Monitoring Instrument (T
Externí odkaz:
https://doaj.org/article/3ea8a26997aa4db99d274be8c9893668
Autor:
R. A. Barton-Grimley, A. R. Nehrir, S. A. Kooi, J. E. Collins, D. B. Harper, A. Notari, J. Lee, J. P. DiGangi, Y. Choi, K. J. Davis
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 4623-4650 (2022)
The NASA Langley Research Center High Altitude Lidar Observatory (HALO) is a multi-functional and modular lidar developed to address the observational needs of NASA's weather, climate, carbon cycle, and atmospheric composition focus areas. HALO measu
Externí odkaz:
https://doaj.org/article/3e08b27031de425689630f2d7ba8bdf2
Autor:
V. C. Monteiro, N. L. Miles, S. J. Richardson, Z. Barkley, B. J. Haupt, D. Lyon, B. Hmiel, K. J. Davis
Publikováno v:
Earth System Science Data, Vol 14, Pp 2401-2417 (2022)
We describe the instrumentation, calibration, and uncertainty of the network of ground-based, in situ, cavity ring down spectroscopy (CRDS) greenhouse gas (GHG) measurements deployed in the Permian Basin. The primary goal of the network is to be used
Externí odkaz:
https://doaj.org/article/d8d92925927549a6af0b395018a365e0
Publikováno v:
Geoscientific Model Development, Vol 15, Pp 649-668 (2022)
To check the accuracy of column-average dry air CO2 mole fractions (XCO2) retrieved from Orbiting Carbon Observatory (OCO-2) data, a similar quantity has been measured from the Multi-functional Fiber Laser Lidar (MFLL) aboard aircraft flying undernea
Externí odkaz:
https://doaj.org/article/9b2b9e4e394144d4a358fe7a56085016
Autor:
D. R. Lyon, B. Hmiel, R. Gautam, M. Omara, K. A. Roberts, Z. R. Barkley, K. J. Davis, N. L. Miles, V. C. Monteiro, S. J. Richardson, S. Conley, M. L. Smith, D. J. Jacob, L. Shen, D. J. Varon, A. Deng, X. Rudelis, N. Sharma, K. T. Story, A. R. Brandt, M. Kang, E. A. Kort, A. J. Marchese, S. P. Hamburg
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 6605-6626 (2021)
Methane emissions associated with the production, transport, and use of oil and natural gas increase the climatic impacts of energy use; however, little is known about how emissions vary temporally and with commodity prices. We present airborne and g
Externí odkaz:
https://doaj.org/article/2daf0f24cadd400aade03acbdf954c61
Publikováno v:
Geoscientific Model Development, Vol 14, Pp 3037-3066 (2021)
Chemistry transport models (CTMs) play an important role in understanding fluxes and atmospheric distribution of carbon dioxide (CO2). They have been widely used for modeling CO2 transport through forward simulations and inferring fluxes through inve
Externí odkaz:
https://doaj.org/article/b2b7e0db793f4f4fbd57dfc2c9a2a9ee
Autor:
X. Yu, D. B. Millet, K. C. Wells, D. K. Henze, H. Cao, T. J. Griffis, E. A. Kort, G. Plant, M. J. Deventer, R. K. Kolka, D. T. Roman, K. J. Davis, A. R. Desai, B. C. Baier, K. McKain, A. C. Czarnetzki, A. A. Bloom
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 951-971 (2021)
We apply airborne measurements across three seasons (summer, winter and spring 2017–2018) in a multi-inversion framework to quantify methane emissions from the US Corn Belt and Upper Midwest, a key agricultural and wetland source region. Combing ou
Externí odkaz:
https://doaj.org/article/67f17a2566a44508b2c116929890ee52
Autor:
P. Weibring, D. Richter, J. G. Walega, A. Fried, J. DiGangi, H. Halliday, Y. Choi, B. Baier, C. Sweeney, B. Miller, K. J. Davis, Z. Barkley, M. D. Obland
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 6095-6112 (2020)
An airborne trace gas sensor based on mid-infrared technology is presented for fast (1 s) and high-precision ethane measurements during the Atmospheric Carbon and Transport-America (ACT-America) study. The ACT-America campaign is a multiyear effort
Externí odkaz:
https://doaj.org/article/11098c56e9d14164b98b20ac36a3bcf9
Autor:
N. V. Balashov, K. J. Davis, N. L. Miles, T. Lauvaux, S. J. Richardson, Z. R. Barkley, T. A. Bonin
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 4545-4559 (2020)
As natural gas extraction and use continues to increase, the need to quantify emissions of methane (CH4), a powerful greenhouse gas, has grown. Large discrepancies in Indianapolis CH4 emissions have been observed when comparing inventory, aircraft ma
Externí odkaz:
https://doaj.org/article/706f9adfd35b4ad29c16e7df29f21af8
Autor:
Y. Wei, R. Shrestha, S. Pal, T. Gerken, S. Feng, J. McNelis, D. Singh, M. M. Thornton, A. G. Boyer, M. A. Shook, G. Chen, B. C. Baier, Z. R. Barkley, J. D. Barrick, J. R. Bennett, E. V. Browell, J. F. Campbell, L. J. Campbell, Y. Choi, J. Collins, J. Dobler, M. Eckl, A. Fiehn, A. Fried, J. P. Digangi, R. Barton‐Grimley, H. Halliday, T. Klausner, S. Kooi, J. Kostinek, T. Lauvaux, B. Lin, M. J. McGill, B. Meadows, N. L. Miles, A. R. Nehrir, J. B. Nowak, M. Obland, C. O’Dell, R. M. P. Fao, S. J. Richardson, D. Richter, A. Roiger, C. Sweeney, J. Walega, P. Weibring, C. A. Williams, M. M. Yang, Y. Zhou, K. J. Davis
Publikováno v:
Earth and Space Science, Vol 8, Iss 7, Pp n/a-n/a (2021)
Abstract The ACT‐America project is a NASA Earth Venture Suborbital‐2 mission designed to study the transport and fluxes of greenhouse gases. The open and freely available ACT‐America data sets provide airborne in situ measurements of atmospher
Externí odkaz:
https://doaj.org/article/a5e35d8e04f344c8bc0285e3a1928ffb