Search Results - "Kort, E A"

Enhanced Seasonal Exchange of CO₂ by Northern Ecosystems Since 1960 by Graven, H. D., Keeling, R. F., Piper, S. C., Patra, P. K., Stephens, B. B., Wofsy, S. C., Welp, L. R., Sweeney, C., Tans, P. P., Kelley, J. J., Daube, B. C., Kort, E. A., Santoni, G. W., Bent, J. D.

“…Seasonal variations of atmospheric carbon dioxide (CO₂) in the Northern Hemisphere have increased since the 1950s, but sparse observations have prevented a…”
Get full text

Quantifying atmospheric methane emissions from oil and natural gas production in the Bakken shale region of North Dakota by Peischl, J., Karion, A., Sweeney, C., Kort, E. A., Smith, M. L., Brandt, A. R., Yeskoo, T., Aikin, K. C., Conley, S. A., Gvakharia, A., Trainer, M., Wolter, S., Ryerson, T. B.

“…We present in situ airborne measurements of methane (CH4) and ethane (C2H6) taken aboard a NOAA DHC‐6 Twin Otter research aircraft in May 2014 over the…”
Get full text

Atmospheric CH4 in the first decade of the 21st century: Inverse modeling analysis using SCIAMACHY satellite retrievals and NOAA surface measurements by Bergamaschi, P., Houweling, S., Segers, A., Krol, M., Frankenberg, C., Scheepmaker, R. A., Dlugokencky, E., Wofsy, S. C., Kort, E. A., Sweeney, C., Schuck, T., Brenninkmeijer, C., Chen, H., Beck, V., Gerbig, C.

“…The causes of renewed growth in the atmospheric CH4 burden since 2007 are still poorly understood and subject of intensive scientific discussion. We present a…”
Get full text

A multi-year methane inversion using SCIAMACHY, accounting for systematic errors using TCCON measurements by Houweling, S, Krol, M, Bergamaschi, P, Frankenberg, C, Dlugokencky, E. J, Morino, I, Notholt, J, Sherlock, V, Wunch, D, Beck, V, Gerbig, C, Chen, H, Kort, E. A, Röckmann, T, Aben, I

“…This study investigates the use of total column CH4 (XCH4) retrievals from the SCIAMACHY satellite instrument for quantifying large-scale emissions of methane…”
Get full text

Mapping CH4 : CO2 ratios in Los Angeles with CLARS-FTS from Mount Wilson, California by Wong, K W, Fu, D, Pongetti, T J, Newman, S, Kort, E A, Duren, R, Hsu, Y-K, Miller, C E, Yung, Y L, Sander, S P

“…The Los Angeles megacity, which is home to more than 40% of the population in California, is the second largest megacity in the United States and an intense…”
Get full text

Diurnal tracking of anthropogenic CO2 emissions in the Los Angeles basin megacity during spring 2010 by Newman, S, Jeong, S, Fischer, M L, Xu, X, Haman, C L, Lefer, B, Alvarez, S, Rappenglueck, B, Kort, E A, Andrews, A E, Peischl, J, Gurney, K R, Miller, C E, Yung, Y L

“…Attributing observed CO2 variations to human or natural cause is critical to deducing and tracking emissions from observations. We have used in situ CO2 , CO,…”
Get full text

Atmospheric observations of Arctic Ocean methane emissions up to 82° north by Kort, E. A., Wofsy, S. C., Daube, B. C., Diao, M., Elkins, J. W., Gao, R. S., Hintsa, E. J., Hurst, D. F., Jimenez, R., Moore, F. L., Spackman, J. R., Zondlo, M. A.

“…Uncertainty in the future atmospheric burden of methane—a potent greenhouse gas—represents an important challenge to the development of realistic climate…”
Get full text

Airborne and ground-based observations of a weekend effect in ozone, precursors, and oxidation products in the California South Coast Air Basin by Pollack, I. B., Ryerson, T. B., Trainer, M., Parrish, D. D., Andrews, A. E., Atlas, E. L., Blake, D. R., Brown, S. S., Commane, R., Daube, B. C., de Gouw, J. A., Dubé, W. P., Flynn, J., Frost, G. J., Gilman, J. B., Grossberg, N., Holloway, J. S., Kofler, J., Kort, E. A., Kuster, W. C., Lang, P. M., Lefer, B., Lueb, R. A., Neuman, J. A., Nowak, J. B., Novelli, P. C., Peischl, J., Perring, A. E., Roberts, J. M., Santoni, G., Schwarz, J. P., Spackman, J. R., Wagner, N. L., Warneke, C., Washenfelder, R. A., Wofsy, S. C., Xiang, B.

“…Airborne and ground‐based measurements during the CalNex (California Research at the Nexus of Air Quality and Climate Change) field study in May/June 2010 show…”
Get full text

Validation of TES methane with HIPPO aircraft observations: implications for inverse modeling of methane sources by Wecht, K. J, Jacob, D. J, Wofsy, S. C, Kort, E. A, Worden, J. R, Kulawik, S. S, Henze, D. K, Kopacz, M, Payne, V. H

“…We validate satellite methane observations from the Tropospheric Emission Spectrometer (TES) with 151 aircraft vertical profiles over the Pacific from the…”
Get full text

Tropospheric distribution and variability of N2O: Evidence for strong tropical emissions by Kort, E. A., Patra, P. K., Ishijima, K., Daube, B. C., Jiménez, R., Elkins, J., Hurst, D., Moore, F. L., Sweeney, C., Wofsy, S. C.

“…Measurements of atmospheric N2O spanning altitudes from the surface to 14 km, and latitudes from 67°S to 85°N, show high concentrations in the tropics and…”
Get full text

Regional sources of nitrous oxide over the United States: Seasonal variation and spatial distribution by Miller, S. M., Kort, E. A., Hirsch, A. I., Dlugokencky, E. J., Andrews, A. E., Xu, X., Tian, H., Nehrkorn, T., Eluszkiewicz, J., Michalak, A. M., Wofsy, S. C.

“…This paper presents top‐down constraints on the magnitude, spatial distribution, and seasonality of nitrous oxide (N2O) emissions over the central United…”
Get full text

Magnitude and seasonality of wetland methane emissions from the Hudson Bay Lowlands (Canada) by Pickett-Heaps, C. A., Jacob, D. J., Wecht, K. J., Kort, E. A., Wofsy, S. C., Diskin, G. S., Worthy, D. E. J., Kaplan, J. O., Bey, I., Drevet, J.

“…The Hudson Bay Lowlands (HBL) is the second largest boreal wetland ecosystem in the world and an important natural source of global atmospheric methane. We…”
Get full text

Reducing errors in aircraft atmospheric inversion estimates of point-source emissions: the Aliso Canyon natural gas leak as a natural tracer experiment by Gourdji, S M, Yadav, V, Karion, A, Mueller, K L, Conley, S, Ryerson, T, Nehrkorn, T, Kort, E A

“…Urban greenhouse gas (GHG) flux estimation with atmospheric measurements and modeling, i.e. the 'top-down' approach, can potentially support GHG emission…”
Get full text

Sensitivity analysis of the potential impact of discrepancies in stratosphere–troposphere exchange on inferred sources and sinks of CO2 by Deng, F, Jones, D B A, Walker, T W, Keller, M, Bowman, K W, Henze, D K, Nassar, R, Kort, E A, Wofsy, S C, Walker, K A, Bourassa, A E, Degenstein, D A

“…The upper troposphere and lower stratosphere (UTLS) represents a transition region between the more dynamically active troposphere and more stably stratified…”
Get full text

Corrigendum to "A multi-year methane inversion using SCIAMACHY, accounting for systematic errors using TCCON measurements" published in Atmos. Chem. Phys., 14, 3991–4012, 2014 by Houweling, S, Krol, M, Bergamaschi, P, Frankenberg, C, Dlugokencky, E. J, Morino, I, Notholt, J, Sherlock, V, Wunch, D, Beck, V, Gerbig, C, Chen, H, Kort, E. A, Röckmann, T, Aben, I

Get full text

Methane Leaks from North American Natural Gas Systems by Brandt, A. R., Heath, G. A., Kort, E. A., O'Sullivan, F., Pétron, G., Jordaan, S. M., Tans, P., Wilcox, J., Gopstein, A. M., Arent, D., Wofsy, S., Brown, N. J., Bradley, R., Stucky, G. D., Eardley, D., Harriss, R.

“…Methane emissions from U.S. and Canadian natural gas systems appear larger than official estimates. Natural gas (NG) is a potential “bridge fuel” during…”
Get full text

Simulation of atmospheric N2O with GEOS-Chem and its adjoint: evaluation of observational constraints by Wells, K C, Millet, D B, Bousserez, N, Henze, D K, Chaliyakunnel, S, Griffis, T J, Luan, Y, Dlugokencky, E J, Prinn, R G, O'Doherty, S

“…We describe a new 4D-Var inversion framework for nitrous oxide (N2O) based on the GEOS-Chem chemical transport model and its adjoint, and apply it in a series…”
Get full text

Fugitive Emissions from the Bakken Shale Illustrate Role of Shale Production in Global Ethane Shift by Kort, E. A., Smith, M. L., Murray, L. T., Gvakharia, A., Brandt, A. R., Peischl, J., Ryerson, T. B., Sweeney, C., Travis, K.

“…Ethane is the second most abundant atmospheric hydrocarbon, exerts a strong influence on tropospheric ozone, and reduces the atmosphere's oxidative capacity…”
Get full text

Inverse modelling of CH4 emissions for 2010-2011 using different satellite retrieval products from GOSAT and SCIAMACHY by Alexe, M, Bergamaschi, P, Segers, A, Detmers, R, Butz, A, Hasekamp, O, Guerlet, S, Parker, R, Boesch, H, Frankenberg, C

“…At the beginning of 2009 new space-borne observations of dry-air column-averaged mole fractions of atmospheric methane (XCH4) became available from the Thermal…”
Get full text

Inferring regional sources and sinks of atmospheric CO2 from GOSAT XCO2 data by F. Deng, D. B. A. Jones, D. K. Henze, N. Bousserez, K. W. Bowman, J. B. Fisher, R. Nassar, C. O'Dell, D. Wunch, P. O. Wennberg, E. A. Kort, S. C. Wofsy, T. Blumenstock, N. M. Deutscher, D. W. T. Griffith, F. Hase, P. Heikkinen, V. Sherlock, K. Strong, R. Sussmann, T. Warneke

“…We have examined the utility of retrieved column-averaged, dry-air mole fractions of CO2 (XCO2) from the Greenhouse Gases Observing Satellite (GOSAT) for…”
Get full text