Search Results - "Daube, B. C."

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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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 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 dioxide column abundances at the Wisconsin Tall Tower site by Washenfelder, R. A., Toon, G. C., Blavier, J.-F., Yang, Z., Allen, N. T., Wennberg, P. O., Vay, S. A., Matross, D. M., Daube, B. C.

“…We have developed an automated observatory for measuring atmospheric column abundances of CO2 and O2 using near‐infrared spectra of the Sun obtained with a…”
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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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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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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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Validation of MOPITT Version 5 thermal-infrared, near-infrared, and multispectral carbon monoxide profile retrievals for 2000-2011 by Deeter, M. N., Martínez-Alonso, S., Edwards, D. P., Emmons, L. K., Gille, J. C., Worden, H. M., Pittman, J. V., Daube, B. C., Wofsy, S. C.

“…Validation results are reported for the MOPITT (Measurements of Pollution in the Troposphere) “Version 5” (V5) product for tropospheric carbon monoxide (CO)…”
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Quantifying sources of methane using light alkanes in the Los Angeles basin, California by Peischl, J., Ryerson, T. B., Brioude, J., Aikin, K. C., Andrews, A. E., Atlas, E., Blake, D., Daube, B. C., de Gouw, J. A., Dlugokencky, E., Frost, G. J., Gentner, D. R., Gilman, J. B., Goldstein, A. H., Harley, R. A., Holloway, J. S., Kofler, J., Kuster, W. C., Lang, P. M., Novelli, P. C., Santoni, G. W., Trainer, M., Wofsy, S. C., Parrish, D. D.

“…Methane (CH4), carbon dioxide (CO2), carbon monoxide (CO), and C2–C5 alkanes were measured throughout the Los Angeles (L.A.) basin in May and June 2010. We use…”
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Sensitivity of boreal forest carbon balance to soil thaw by Goulden, M.L, Wofsy, S.C, Harden, J.W, Trumbore, S.E, Crill, P.M, Gower, S.T, Fries, T, Daube, B.S, Fan, S.M, Sutton, D.J

“…We used eddy covariance; gas-exchange chambers; radiocarbon analysis; wood, moss, and soil inventories; and laboratory incubations to measure the carbon…”
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Airborne observations of methane emissions from rice cultivation in the Sacramento Valley of California by Peischl, J., Ryerson, T. B., Holloway, J. S., Trainer, M., Andrews, A. E., Atlas, E. L., Blake, D. R., Daube, B. C., Dlugokencky, E. J., Fischer, M. L., Goldstein, A. H., Guha, A., Karl, T., Kofler, J., Kosciuch, E., Misztal, P. K., Perring, A. E., Pollack, I. B., Santoni, G. W., Schwarz, J. P., Spackman, J. R., Wofsy, S. C., Parrish, D. D.

“…Airborne measurements of methane (CH4) and carbon dioxide (CO2) were taken over the rice growing region of California's Sacramento Valley in the late spring of…”
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Total column CO2 measurements at Darwin, Australia - site description and calibration against in situ aircraft profiles by Deutscher, N M, Griffith, D W. T, Bryant, G W, Wennberg, P O, Toon, G C, Washenfelder, R A, Keppel-Aleks, G, Wunch, D, Yavin, Y, Allen, N T, Blavier, J.-F, Jiménez, R, Daube, B C, Bright, A V, Matross, D M, Wofsy, S C, Park, S

“…An automated Fourier Transform Spectroscopic (FTS) solar observatory was established in Darwin, Australia in August 2005. The laboratory is part of the Total…”
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Toward constraining regional-scale fluxes of CO2 with atmospheric observations over a continent: 2. Analysis of COBRA data using a receptor-oriented framework by Gerbig, C., Lin, J. C., Wofsy, S. C., Daube, B. C., Andrews, A. E., Stephens, B. B., Bakwin, P. S., Grainger, C. A.

“…We present an analysis framework and illustrate its potential to constrain terrestrial carbon fluxes at the regional scale using observations of CO2 and CO…”
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Toward constraining regional-scale fluxes of CO2 with atmospheric observations over a continent: 1. Observed spatial variability from airborne platforms by Gerbig, C., Lin, J. C., Wofsy, S. C., Daube, B. C., Andrews, A. E., Stephens, B. B., Bakwin, P. S., Grainger, C. A.

“…We analyze the spatial variability of CO2 measurements from aircraft platforms, including extensive observations acquired over North America during the CO2…”
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Continuing global significance of emissions of Montreal Protocol–restricted halocarbons in the United States and Canada by Hurst, D. F., Lin, J. C., Romashkin, P. A., Daube, B. C., Gerbig, C., Matross, D. M., Wofsy, S. C., Hall, B. D., Elkins, J. W.

“…Contemporary emissions of six restricted, ozone‐depleting halocarbons, chlorofluorocarbon‐11 (CFC‐11, CCl3F), CFC‐12 (CCl2F2), CFC‐113 (CCl2FCClF2), methyl…”
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Vertical transport rates and concentrations of OH and Cl radicals in the Tropical Tropopause Layer from observations of CO2 and halocarbons: implications for distributions of long- and short-lived chemical species by Park, S, Atlas, E L, Jiménez, R, Daube, B C, Gottlieb, E W, Nan, J, Jones, D B. A, Pfister, L, Conway, T J, Bui, T P, Gao, R.-S, Wofsy, S C

“…Rates for large-scale vertical transport of air in the Tropical Tropopause Layer (TTL) were determined using high-resolution, in situ observations of CO2…”
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Net exchange of CO2 in a mid-latitude forest by Wofsy, S.C, Goulden, M.L, Munger, J.W, Fan, S.M, Bakwin, P.S, Daube, B.C, Bassow, S.L, Bazzaz, F.A

“…The eddy correlation method was used to measure the net ecosystem exchange of carbon dioxide continuously from April 1990 to December 1991 in a deciduous…”
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Quantifying the impact of the North American monsoon and deep midlatitude convection on the subtropical lowermost stratosphere using in situ measurements by Weinstock, E. M., Pittman, J. V., Sayres, D. S., Smith, J. B., Anderson, J. G., Wofsy, S. C., Xueref, I., Gerbig, C., Daube, B. C., Pfister, L., Richard, E. C., Ridley, B. A., Weinheimer, A. J., Jost, H.-J., Lopez, J. P., Loewenstein, M., Thompson, T. L.

“…The chemical composition of the lowermost stratosphere exhibits both spatial and temporal variability depending upon the relative strength of (1) isentropic…”
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Stratospheric Mean Ages and Transport Rates from Observations of Carbon Dioxide and Nitrous Oxide by Boering, K. A., Wofsy, S. C., Daube, B. C., Schneider, H. R., Loewenstein, M., Podolske, J. R., Conway, T. J.

“…Measurements of stratospheric carbon dioxide (CO$_2$) and nitrous oxide (N$_2$O) concentrations were analyzed to investigate stratospheric transport rates…”
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Designing Lagrangian experiments to measure regional-scale trace gas fluxes by Lin, J. C., Gerbig, C., Wofsy, S. C., Chow, V. Y., Gottlieb, E., Daube, B. C., Matross, D. M.

“…Knowledge of trace gas fluxes at the land surface is essential for understanding the impact of human activities on the composition and radiative balance of the…”
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