Search Results - "Holmes, C. D."

Future methane, hydroxyl, and their uncertainties: key climate and emission parameters for future predictions by Holmes, C. D, Prather, M. J, Søvde, O. A, Myhre, G

“…Accurate prediction of future methane abundances following a climate scenario requires understanding the lifetime changes driven by anthropogenic emissions,…”
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Contrasting the direct radiative effect and direct radiative forcing of aerosols by Heald, C. L, Ridley, D. A, Kroll, J. H, Barrett, S. R. H, Cady-Pereira, K. E, Alvarado, M. J, Holmes, C. D

“…The direct radiative effect (DRE) of aerosols, which is the instantaneous radiative impact of all atmospheric particles on the Earth's energy balance, is…”
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Global atmospheric model for mercury including oxidation by bromine atoms by Holmes, C D, Jacob, D J, Corbitt, E S, Mao, J, Yang, X, Talbot, R, Slemr, F

“…Global models of atmospheric mercury generally assume that gas-phase OH and ozone are the main oxidants converting Hg0 to HgII and thus driving mercury…”
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Gas-particle partitioning of atmospheric Hg(II) and its effect on global mercury deposition by Amos, H. M, Jacob, D. J, Holmes, C. D, Fisher, J. A, Wang, Q, Yantosca, R. M, Corbitt, E. S, Galarneau, E, Rutter, A. P, Gustin, M. S, Steffen, A, Schauer, J. J, Graydon, J. A, Louis, V. L. St, Talbot, R. W, Edgerton, E. S, Zhang, Y, Sunderland, E. M

“…Atmospheric deposition of Hg(II) represents a major input of mercury to surface environments. The phase of Hg(II) (gas or particle) has important implications…”
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A New Picture of Fire Extent, Variability, and Drought Interaction in Prescribed Fire Landscapes: Insights From Florida Government Records by Nowell, H. K., Holmes, C. D., Robertson, K., Teske, C., Hiers, J. K.

“…Florida, United States, government records provide a new resource for studying fire in landscapes managed with prescribed fire. In Florida, most fire area…”
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Skill in forecasting extreme ozone pollution episodes with a global atmospheric chemistry model by Schnell, J. L, Holmes, C. D, Jangam, A, Prather, M. J

“…From the ensemble of stations that monitor surface air quality over the United States and Europe, we identify extreme ozone pollution events and find that they…”
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Present and future nitrogen deposition to national parks in the United States: critical load exceedances by Ellis, R. A, Jacob, D. J, Sulprizio, M. P, Zhang, L, Holmes, C. D, Schichtel, B. A, Blett, T, Porter, E, Pardo, L. H, Lynch, J. A

“…National parks in the United States are protected areas wherein the natural habitat is to be conserved for future generations. Deposition of anthropogenic…”
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Nested-grid simulation of mercury over North America by Zhang, Y, Jaeglé, L, van Donkelaar, A, Martin, R. V, Holmes, C. D, Amos, H. M, Wang, Q, Talbot, R, Artz, R, Brooks, S, Luke, W, Holsen, T. M, Felton, D, Miller, E. K, Perry, K. D, Schmeltz, D, Steffen, A, Tordon, R, Weiss-Penzias, P, Zsolway, R

“…We have developed a new nested-grid mercury (Hg) simulation over North America with a 1/2° latitude by 2/3° longitude horizontal resolution employing the…”
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Source attribution and interannual variability of Arctic pollution in spring constrained by aircraft (ARCTAS, ARCPAC) and satellite (AIRS) observations of carbon monoxide by Fisher, J. A., Jacob, D. J., Purdy, M. T., Kopacz, M., Le Sager, P., Carouge, C., Holmes, C. D., Yantosca, R. M., Batchelor, R. L., Strong, K., Diskin, G. S., Fuelberg, H. E., Holloway, J. S., Hyer, E. J., McMillan, W. W., Warner, J., Streets, D. G., Zhang, Q., Wang, Y., Wu, S.

“…We use aircraft observations of carbon monoxide (CO) from the NASA ARCTAS and NOAA ARCPAC campaigns in April 2008 together with multiyear (2003–2008) CO…”
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Sources of atmospheric mercury in the tropics: continuous observations at a coastal site in Suriname by Müller, D, Wip, D, Warneke, T, Holmes, C. D, Dastoor, A, Notholt, J

“…Mercury measurements at a coastal site in Nieuw Nickerie (5°56' N, 56°59' W), Suriname, provide the only continuous records of atmospheric mercury in the…”
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The chemical transport model Oslo CTM3 by Søvde, O. A, Prather, M. J, Isaksen, I. S. A, Berntsen, T. K, Stordal, F, Zhu, X, Holmes, C. D, Hsu, J

“…We present here the global chemical transport model Oslo CTM3, an update of the Oslo CTM2. The update comprises a faster transport scheme, an improved wet…”
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Cloud-resolving simulations of mercury scavenging and deposition in thunderstorms by Nair, U. S, Wu, Y, Holmes, C. D, Ter Schure, A, Kallos, G, Walters, J. T

“…This study examines dynamical and microphysical features of convective clouds that affect mercury (Hg) wet scavenging and concentrations in rainfall. Using…”
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Modeled methanesulfonic acid (MSA) deposition in Antarctica and its relationship to sea ice by Hezel, P. J., Alexander, B., Bitz, C. M., Steig, E. J., Holmes, C. D., Yang, X., Sciare, J.

“…Methanesulfonic acid (MSA) has previously been measured in ice cores in Antarctica as a proxy for sea ice extent and Southern Hemisphere circulation. In a…”
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Impacts of changes in climate, land use and land cover on atmospheric mercury by Zhang, H., Holmes, C.D., Wu, S.

“…Mercury is an important pollutant that can be transported globally due to its long lifetime in the atmosphere. Atmosphere-surface exchange is a major process…”
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New Evidence for the Importance of Non‐Stomatal Pathways in Ozone Deposition During Extreme Heat and Dry Anomalies by Wong, A. Y. H., Geddes, J. A., Ducker, J. A., Holmes, C. D., Fares, S., Goldstein, A. H., Mammarella, I., Munger, J. W.

“…Dry deposition could partially explain the observed response in ambient ozone to extreme hot and dry episodes. We examine the response of ozone deposition to…”
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Complexity in the Evolution, Composition, and Spectroscopy of Brown Carbon in Aircraft Measurements of Wildfire Plumes by Washenfelder, R. A., Azzarello, L., Ball, K., Brown, S. S., Decker, Z. C. J., Franchin, A., Fredrickson, C. D., Hayden, K., Holmes, C. D., Middlebrook, A. M., Palm, B. B., Pierce, R. B., Price, D. J., Roberts, J. M., Robinson, M. A., Thornton, J. A., Womack, C. C., Young, C. J.

“…Biomass burning is a major source of light‐absorbing organic aerosol (brown carbon), but its composition, chemical evolution, and lifetime are not well known…”
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The climate impact of ship NOx emissions: an improved estimate accounting for plume chemistry by C. D. Holmes, M. J. Prather, G. C. M. Vinken

“…Nitrogen oxide (NOx) emissions from maritime shipping produce ozone (O3) and hydroxyl radicals (OH), which in turn destroy methane (CH4). The balance between…”
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Variability of Atmospheric CO2 Over the Arctic Ocean: Insights From the O‐Buoy Chemical Observing Network by Graham, K. A., Holmes, C. D., Friedrich, G., Rauschenberg, C. D., Williams, C. R., Bottenheim, J. W., Chavez, F. P., Halfacre, J. W., Perovich, D. K., Shepson, P. B., Simpson, W. R., Matrai, P. A.

“…As the Arctic climate rapidly warms, there is a critical need for understanding variability and change in the Arctic carbon cycle, but sparse spatial coverage…”
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Variable geometric-phase polarization rotators for the visible by Galvez, E.J, Cheyne, M.R, Stewart, J.B, Holmes, C.D, Sztul, H.I

“…We present the principles of variable pure polarization rotators based on the accumulation of a geometric phase that is obtained by coiling a beam of light via…”
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Influence of bone quality on stress distribution for endosseous implants by Holmes, D C, Loftus, J T

“…The present study examined the influence of bone quality on the transmission of occlusal forces for endosseous dental implants. Employing the finite element…”
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