Search Results - "Wofsy, S. C"

Seasonality of temperate forest photosynthesis and daytime respiration by Wehr, R., Munger, J. W., McManus, J. B., Nelson, D. D., Zahniser, M. S., Davidson, E. A., Wofsy, S. C., Saleska, S. R.

“…Climate models require an understanding of ecosystem-scale respiration and photosynthesis, yet there is no way of measuring these two fluxes directly; here,…”
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Mechanistic scaling of ecosystem function and dynamics in space and time: Ecosystem Demography model version 2 by Medvigy, D., Wofsy, S. C., Munger, J. W., Hollinger, D. Y., Moorcroft, P. R.

“…Insights into how terrestrial ecosystems affect the Earth's response to changes in climate and rising atmospheric CO2 levels rely heavily on the predictions of…”
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A large increase in U.S. methane emissions over the past decade inferred from satellite data and surface observations by Turner, A. J., Jacob, D. J., Benmergui, J., Wofsy, S. C., Maasakkers, J. D., Butz, A., Hasekamp, O., Biraud, S. C.

“…The global burden of atmospheric methane has been increasing over the past decade, but the causes are not well understood. National inventory estimates from…”
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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…”
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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…”
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The MOPITT Version 6 product: algorithm enhancements and validation by Deeter, M. N, Martínez-Alonso, S, Edwards, D. P, Emmons, L. K, Gille, J. C, Worden, H. M, Sweeney, C, Pittman, J. V, Daube, B. C, Wofsy, S. C

“…The Measurements of Pollution in the Troposphere (MOPITT) Version 6 (V6) product for carbon monoxide (CO) incorporates several enhancements which will benefit…”
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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…”
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Uncertainties in, and interpretation of, carbon flux estimates using the eddy covariance technique by Loescher, H. W., Law, B. E., Mahrt, L., Hollinger, D. Y., Campbell, J., Wofsy, S. C.

“…Whole ecosystem carbon dioxide (CO2) exchange estimated with the eddy covariance (EC) technique has been central to studies on the responses of terrestrial…”
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A method for evaluating bias in global measurements of CO2 total columns from space by Wunch, D, Wennberg, P O, Toon, G C, Connor, B J, Fisher, B, Osterman, G B, Frankenberg, C, Mandrake, L, O'Dell, C, Ahonen, P, Biraud, S C, Castano, R, Cressie, N, Crisp, D, Deutscher, N M, Elder ing, A, Fisher, M L, Griffith, D W. T, Gunson, M, Heikkinen, P, Keppel-Aleks, G, Kyrö, E, Lindenmaier, R, Macatangay, R, Mendonca, J, Messerschmidt, J, Miller, C E, Morino, I, Notholt, J, Oyafuso, F A, Rettinger, M, Robinson, J, Roehl, C M, Salawitch, R J, Sherlock, V, Strong, K, Sussmann, R, Tanaka, T, Thompson, D R, Uchino, O, Warneke, T, Wofsy, S C

“…We describe a method of evaluating systematic errors in measurements of total column dry-air mole fractions of CO2 (XCO2 ) from space, and we illustrate the…”
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Global-scale black carbon profiles observed in the remote atmosphere and compared to models by Schwarz, J. P., Spackman, J. R., Gao, R. S., Watts, L. A., Stier, P., Schulz, M., Davis, S. M., Wofsy, S. C., Fahey, D. W.

“…Refractory black carbon (rBC) aerosol loadings and mass size distributions have been quantified during the HIPPO campaign above the remote Pacific from 80N to…”
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Aircraft measurements of gravity waves in the upper troposphere and lower stratosphere during the START08 field experiment by Zhang, Fuqing, Wei, Junhong, Zhang, Meng, Bowman, K P, Pan, L L, Atlas, E, Wofsy, S C

“…This study analyzes in situ airborne measurements from the 2008 Stratosphere–Troposphere Analyses of Regional Transport (START08) experiment to characterize…”
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HIAPER Pole-to-Pole Observations (HIPPO): fine-grained, global-scale measurements of climatically important atmospheric gases and aerosols by Wofsy, S. C.

“…The HIAPER Pole-to-Pole Observations (HIPPO) programme has completed three of five planned aircraft transects spanning the Pacific from 85° N to 67° S, with…”
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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…”
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Carbon monoxide and related trace gases and aerosols over the Amazon Basin during the wet and dry seasons by Andreae, M. O, Artaxo, P, Beck, V, Bela, M, Freitas, S, Gerbig, C, Longo, K, Munger, J. W, Wiedemann, K. T, Wofsy, S. C

“…We present the results of airborne measurements of carbon monoxide (CO) and aerosol particle number concentration (CN) made during the Balanço Atmosférico…”
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A near-field tool for simulating the upstream influence of atmospheric observations: The Stochastic Time-Inverted Lagrangian Transport (STILT) model by Lin, J. C., Gerbig, C., Wofsy, S. C., Andrews, A. E., Daube, B. C., Davis, K. J., Grainger, C. A.

“…We introduce a tool to determine surface fluxes from atmospheric concentration data in the midst of distributed sources or sinks over land, the Stochastic…”
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Calibration of the Total Carbon Column Observing Network using aircraft profile data by Wunch, D., Toon, G. C., Wennberg, P. O., Wofsy, S. C., Stephens, B. B., Fischer, M. L., Uchino, O., Abshire, J. B., Bernath, P., Biraud, S. C., Blavier, J.-F. L., Boone, C., Bowman, K. P., Browell, E. V., Campos, T., Connor, B. J., Daube, B. C., Deutscher, N. M., Diao, M., Elkins, J. W., Gerbig, C., Gottlieb, E., Griffith, D. W. T., Hurst, D. F., Jiménez, R., Keppel-Aleks, G., Kort, E. A., Macatangay, R., Machida, T., Matsueda, H., Moore, F., Morino, I., Park, S., Robinson, J., Roehl, C. M., Sawa, Y., Sherlock, V., Sweeney, C., Tanaka, T., Zondlo, M. A.

“…The Total Carbon Column Observing Network (TCCON) produces precise measurements of the column average dry-air mole fractions of CO2, CO, CH4, N2O and H2O at a…”
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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…”
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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…”
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The 2010 California Research at the Nexus of Air Quality and Climate Change (CalNex) field study by Ryerson, T. B., Andrews, A. E., Angevine, W. M., Bates, T. S., Brock, C. A., Cairns, B., Cohen, R. C., Cooper, O. R., de Gouw, J. A., Fehsenfeld, F. C., Ferrare, R. A., Fischer, M. L., Flagan, R. C., Goldstein, A. H., Hair, J. W., Hardesty, R. M., Hostetler, C. A., Jimenez, J. L., Langford, A. O., McCauley, E., McKeen, S. A., Molina, L. T., Nenes, A., Oltmans, S. J., Parrish, D. D., Pederson, J. R., Pierce, R. B., Prather, K., Quinn, P. K., Seinfeld, J. H., Senff, C. J., Sorooshian, A., Stutz, J., Surratt, J. D., Trainer, M., Volkamer, R., Williams, E. J., Wofsy, S. C.

“…The California Research at the Nexus of Air Quality and Climate Change (CalNex) field study was conducted throughout California in May, June, and July of 2010…”
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Precision requirements for space-based XCO2 data by MILLER, C. E, CRISP, D, JONES, D. B. A, DENNING, A. S, NICHOLLS, M. E, DONEY, S. C, PAWSON, S, BOESCH, H, CONNOR, B. J, FUNG, I. Y, O'BRIEN, D, SALAWITCH, R. J, DECOLA, P. L, SANDER, S. P, SEN, B, TANS, P, TOON, G. C, WENNBERG, P. O, WOFSY, S. C, YUNG, Y. L, LAW, R. M, OLSEN, S. C, RANDERSON, J. T, MICHALAK, A. M, ALKHALED, A, RAYNER, P, JACOB, D. J, SUNTHARALINGAM, P

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