Search Results - "Bardeen, C"

Climate Impacts of COVID‐19 Induced Emission Changes by Gettelman, A., Lamboll, R., Bardeen, C. G., Forster, P. M., Watson‐Parris, D.

“…The COVID‐19 pandemic led to dramatic changes in economic activity in 2020. We use estimates of emission changes for 2020 in two Earth System Models (ESMs) to…”
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The Whole Atmosphere Community Climate Model Version 6 (WACCM6) by Gettelman, A., Mills, M. J., Kinnison, D. E., Garcia, R. R., Smith, A. K., Marsh, D. R., Tilmes, S., Vitt, F., Bardeen, C. G., McInerny, J., Liu, H.‐L., Solomon, S. C., Polvani, L. M., Emmons, L. K., Lamarque, J.‐F., Richter, J. H., Glanville, A. S., Bacmeister, J. T., Phillips, A. S., Neale, R. B., Simpson, I. R., DuVivier, A. K., Hodzic, A., Randel, W. J.

“…The Whole Atmosphere Community Climate Model version 6 (WACCM6) is a major update of the whole atmosphere modeling capability in the Community Earth System…”
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Robust singlet fission in pentacene thin films with tuned charge transfer interactions by Broch, K., Dieterle, J., Branchi, F., Hestand, N. J., Olivier, Y., Tamura, H., Cruz, C., Nichols, V. M., Hinderhofer, A., Beljonne, D., Spano, F. C., Cerullo, G., Bardeen, C. J., Schreiber, F.

“…Singlet fission, the spin-allowed photophysical process converting an excited singlet state into two triplet states, has attracted significant attention for…”
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Numerical simulations of the three-dimensional distribution of meteoric dust in the mesosphere and upper stratosphere by Bardeen, C. G., Toon, O. B., Jensen, E. J., Marsh, D. R., Harvey, V. L.

“…Micrometeorites that ablate in the lower thermosphere and upper mesosphere are thought to recondense into nanometer‐sized smoke particles and then coagulate…”
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How Well Do Large‐Eddy Simulations and Global Climate Models Represent Observed Boundary Layer Structures and Low Clouds Over the Summertime Southern Ocean? by Atlas, R. L., Bretherton, C. S., Blossey, P. N., Gettelman, A., Bardeen, C., Lin, Pu, Ming, Yi

“…Climate models struggle to accurately represent the highly reflective boundary layer clouds overlying the remote and stormy Southern Ocean. We use in situ…”
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Description and evaluation of tropospheric chemistry and aerosols in the Community Earth System Model (CESM1.2) by Tilmes, S, Lamarque, J.-F, Emmons, L. K, Kinnison, D. E, Ma, P.-L, Liu, X, Ghan, S, Bardeen, C, Arnold, S, Deeter, M, Vitt, F, Ryerson, T, Elkins, J. W, Moore, F, Spackman, J. R, Val Martin, M

“…The Community Atmosphere Model (CAM), version 5, is now coupled to extensive tropospheric and stratospheric chemistry, called CAM5-chem, and is available in…”
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Reversible Photoinduced Shape Changes of Crystalline Organic Nanorods by Al-Kaysi, R. O., Bardeen, C. J.

“…Crystalline nanorods composed of 9‐anthracene carboxylic acid (9‐AC) are synthesized using nanoporous Al2O3 templates. When a segment of an isolated rod is…”
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Simulating Observations of Southern Ocean Clouds and Implications for Climate by Gettelman, A., Bardeen, C. G., McCluskey, C. S., Järvinen, E., Stith, J., Bretherton, C., McFarquhar, G., Twohy, C., D'Alessandro, J., Wu, W.

“…Southern Ocean (S. Ocean) clouds are important for climate prediction. Yet previous global climate models failed to accurately represent cloud phase…”
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Climate, Variability, and Climate Sensitivity of “Middle Atmosphere” Chemistry Configurations of the Community Earth System Model Version 2, Whole Atmosphere Community Climate Model Version 6 (CESM2(WACCM6)) by Davis, N. A., Visioni, D., Garcia, R. R., Kinnison, D. E., Marsh, D. R., Mills, M., Richter, J. H., Tilmes, S., Bardeen, C. G., Gettelman, A., Glanville, A. A., MacMartin, D. G., Smith, A. K., Vitt, F.

“…Abstract Simulating whole atmosphere dynamics, chemistry, and physics is computationally expensive. It can require high vertical resolution throughout the…”
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Effects of the September 2005 Solar Flares and Solar Proton Events on the Middle Atmosphere in WACCM by Pettit, J., Randall, C. E., Marsh, D. R., Bardeen, C. G., Qian, L., Jackman, C. H., Woods, T. N., Coster, A., Harvey, V. L.

“…This work investigates middle atmosphere effects of the September 2005 solar flares and solar proton events (SPEs). X‐17 and X‐6.2 flares occurred on 7 and 9…”
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Recent anthropogenic increases in SO2 from Asia have minimal impact on stratospheric aerosol by Neely III, R. R., Toon, O. B., Solomon, S., Vernier, J.-P., Alvarez, C., English, J. M., Rosenlof, K. H., Mills, M. J., Bardeen, C. G., Daniel, J. S., Thayer, J. P.

“…Observations suggest that the optical depth of the stratospheric aerosol layer between 20 and 30 km has increased 4–10% per year since 2000, which is…”
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Climatic consequences of regional nuclear conflicts by Robock, A., Oman, L., Stenchikov, G. L., Toon, O. B., Bardeen, C., Turco, R. P.

“…We use a modern climate model and new estimates of smoke generated by fires in contemporary cities to calculate the response of the climate system to a…”
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Numerical simulations of the three-dimensional distribution of polar mesospheric clouds and comparisons with Cloud Imaging and Particle Size (CIPS) experiment and the Solar Occultation For Ice Experiment (SOFIE) observations by Bardeen, C. G., Toon, O. B., Jensen, E. J., Hervig, M. E., Randall, C. E., Benze, S., Marsh, D. R., Merkel, A.

“…Polar mesospheric clouds (PMC) routinely form in the cold summer mesopause region when water vapor condenses to form ice. We use a three‐dimensional…”
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Atmospheric effects and societal consequences of regional scale nuclear conflicts and acts of individual nuclear terrorism by Toon, O. B., Turco, R. P., Robock, A., Bardeen, C., Oman, L., Stenchikov, G. L.

“…We assess the potential damage and smoke production associated with the detonation of small nuclear weapons in modern megacities. While the number of nuclear…”
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Impact of the January 2012 solar proton event on polar mesospheric clouds by Bardeen, C. G., Marsh, D. R., Jackman, C. H., Hervig, M. E., Randall, C. E.

“…We use data from the Aeronomy of Ice in the Mesosphere mission and simulations using the Whole Atmosphere Community Climate Model to determine the impact of…”
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Spectroscopic and Photocatalytic Properties of Organic Tetracene Nanoparticles in Aqueous Solution by Kim, H. Y, Bjorklund, T. G, Lim, S.-H, Bardeen, C. J

“…A colloidal suspension of nanoparticles of the conjugated organic molecule tetracene is made by injecting a small amount of concentrated…”
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Femtosecond Chirped Pulse Excitation of Vibrational Wave Packets in LD690 and Bacteriorhodopsin by Bardeen, C. J, Wang, Q, Shank, C. V

“…Chirped femtosecond pulses are used to selectively excite vibrationally coherent wave packets in the ground and excited states of molecules in solution…”
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Improved cirrus simulations in a general circulation model using CARMA sectional microphysics by Bardeen, C. G., Gettelman, A., Jensen, E. J., Heymsfield, A., Conley, A. J., Delanoë, J., Deng, M., Toon, O. B.

“…We have developed a new cirrus model incorporating sectional ice microphysics from the Community Aerosol and Radiation Model for Atmospheres (CARMA) in the…”
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Selective excitation of vibrational wave packet motion using chirped pulses by Bardeen, CJ, Wang, Q, Shank, CV

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Electron transfer. Sometimes you can go home again by Bardeen, C

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