Search Results - "Bacmeister, J. T."

High Climate Sensitivity in the Community Earth System Model Version 2 (CESM2) by Gettelman, A., Hannay, C., Bacmeister, J. T., Neale, R. B., Pendergrass, A. G., Danabasoglu, G., Lamarque, J.‐F., Fasullo, J. T., Bailey, D. A., Lawrence, D. M., Mills, M. J.

“…The Community Earth System Model Version 2 (CESM2) has an equilibrium climate sensitivity (ECS) of 5.3 K. ECS is an emergent property of both climate feedbacks…”
Get full text

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…”
Get full text

Spatial statistics of likely convective clouds in CloudSat data by Bacmeister, J. T., Stephens, G. L.

“…Spatial characteristics of cloud objects derived from 14 months of CloudSat data are analyzed with the aim of understanding global statistics for atmospheric…”
Get full text

NCAR Release of CAM‐SE in CESM2.0: A Reformulation of the Spectral Element Dynamical Core in Dry‐Mass Vertical Coordinates With Comprehensive Treatment of Condensates and Energy by Lauritzen, P. H., Nair, R. D., Herrington, A. R., Callaghan, P., Goldhaber, S., Dennis, J. M., Bacmeister, J. T., Eaton, B. E., Zarzycki, C. M., Taylor, Mark A., Ullrich, P. A., Dubos, T., Gettelman, A., Neale, R. B., Dobbins, B., Reed, K. A., Hannay, C., Medeiros, B., Benedict, J. J., Tribbia, J. J.

“…It is the purpose of this paper to provide a comprehensive documentation of the new NCAR (National Center for Atmospheric Research) version of the spectral…”
Get full text

Impact of the dynamical core on the direct simulation of tropical cyclones in a high-resolution global model by Reed, K. A., Bacmeister, J. T., Rosenbloom, N. A., Wehner, M. F., Bates, S. C., Lauritzen, P. H., Truesdale, J. E., Hannay, C.

“…This paper examines the impact of the dynamical core on the simulation of tropical cyclone (TC) frequency, distribution, and intensity. The dynamical core, the…”
Get full text

The Single Column Atmosphere Model Version 6 (SCAM6): Not a Scam but a Tool for Model Evaluation and Development by Gettelman, A., Truesdale, J. E., Bacmeister, J. T., Caldwell, P. M., Neale, R. B., Bogenschutz, P. A., Simpson, I. R.

“…The Single Column Atmosphere Model (SCAM) is a single column model version of the Community Atmosphere Model (CAM). Here we describe the functionality and…”
Get full text

Comparing clouds and their seasonal variations in 10 atmospheric general circulation models with satellite measurements by Zhang, M. H., Lin, W. Y., Klein, S. A., Bacmeister, J. T., Bony, S., Cederwall, R. T., Del Genio, A. D., Hack, J. J., Loeb, N. G., Lohmann, U., Minnis, P., Musat, I., Pincus, R., Stier, P., Suarez, M. J., Webb, M. J., Wu, J. B., Xie, S. C., Yao, M.-S., Zhang, J. H.

“…To assess the current status of climate models in simulating clouds, basic cloud climatologies from ten atmospheric general circulation models are compared…”
Get full text

Regional Climate Simulations With the Community Earth System Model by Gettelman, A., Callaghan, P., Larson, V. E., Zarzycki, C. M., Bacmeister, J. T., Lauritzen, P. H., Bogenschutz, P. A., Neale, R. B.

“…The spectral element (SE) variable‐resolution (VR) mesh dynamical core is tested in developmental versions of the Community Earth System Model version 2…”
Get full text

NCAR_Topo (v1.0): NCAR global model topography generation software for unstructured grids by Lauritzen, P. H, Bacmeister, J. T, Callaghan, P. F, Taylor, M. A

“…It is the purpose of this paper to document the NCAR global model topography generation software for unstructured grids (NCAR_Topo (v1.0)). Given a model grid,…”
Get full text

A Method for Estimating Global Subgrid‐Scale Orographic Gravity‐Wave Temperature Perturbations in Chemistry‐Climate Models by Weimer, M., Wilka, C., Kinnison, D. E., Garcia, R. R., Bacmeister, J. T., Alexander, M. J., Dörnbrack, A., Solomon, S.

“…Abstract Many chemical processes depend non‐linearly on temperature. Gravity‐wave‐induced temperature perturbations have been shown to affect atmospheric…”
Get full text

Assessing possible dynamical effects of condensate in high resolution climate simulations by Bacmeister, J. T., Lauritzen, P. H., Dai, A., Truesdale, J. E.

“…In areas of heavy precipitation, condensed water species can add significant mass to an atmospheric column. This mass can create positive pressure anomalies of…”
Get full text

Projections of future tropical cyclone damage with a high-resolution global climate model by Gettelman, A., Bresch, D. N., Chen, C. C., Truesdale, J. E., Bacmeister, J. T.

“…High-resolution climate model simulations and a tropical cyclone damage model are used to simulate the economic damage due to tropical cyclones. The damage…”
Get full text

Increased stratospheric ozone depletion due to mountain-induced atmospheric waves by Carslaw, K. S, Wirth, M, Tsias, A, Luo, B. P, Dörnbrack, A, Leutbecher, M, Volkert, H, Renger, W, Bacmeister, J. T, Reimer, E, Peter, Th

“…Chemical reactions on polar stratospheric cloud (PSC) particles are responsible for the production of reactive chlorine species (chlorine 'activation') which…”
Get full text

Particle microphysics and chemistry in remotely observed mountain polar stratospheric clouds by Carslaw, K. S., Wirth, M., Tsias, A., Luo, B. P., Dörnbrack, A., Leutbecher, M., Volkert, H., Renger, W., Bacmeister, J. T., Peter, T.

“…Polar stratospheric clouds (PSCs) at 22–26 km were observed over the Norwegian mountains by airborne lidar on January 15, 1995. Simulations using a mesoscale…”
Get full text

Scale dependence of tracer microstructure: PDFs, intermittency and the dissipation scale by Sparling, L. C., Bacmeister, J. T.

“…The statistics of tracer variability on small scales (<200 km) is investigated using high resolution aircraft measurements of ozone in the northern winter…”
Get full text

CO2 Increase Experiments Using the CESM: Relationship to Climate Sensitivity and Comparison of CESM1 to CESM2 by Bacmeister, J. T., Hannay, C., Medeiros, B., Gettelman, A., Neale, R., Fredriksen, H. B., Lipscomb, W. H., Simpson, I., Bailey, D. A., Holland, M., Lindsay, K., Otto‐Bliesner, B.

“…We examine the response of the Community Earth System Model Versions 1 and 2 (CESM1 and CESM2) to abrupt quadrupling of atmospheric CO2 concentrations (4xCO2)…”
Get full text

Reconciling and Improving Formulations for Thermodynamics and Conservation Principles in Earth System Models (ESMs) by Lauritzen, P. H., Kevlahan, N. K.‐R., Toniazzo, T., Eldred, C., Dubos, T., Gassmann, A., Larson, V. E., Jablonowski, C., Guba, O., Shipway, B., Harrop, B. E., Lemarié, F., Tailleux, R., Herrington, A. R., Large, W., Rasch, P. J., Donahue, A. S., Wan, H., Conley, A., Bacmeister, J. T.

“…This paper provides a comprehensive derivation of the total energy equations for the atmospheric components of Earth System Models (ESMs). The assumptions and…”
Get full text

Two-dimensional model calculations of nitric oxide transport in the middle atmosphere and comparison with Halogen Occultation Experiment data by Siskind, David E., Bacmeister, J. T., Summers, M. E., Russell, J. M.

“…A two‐dimensional chemical transport model has been used to examine the physical processes governing the transport of high levels of thermospheric nitric oxide…”
Get full text

CO 2 Increase Experiments Using the CESM: Relationship to Climate Sensitivity and Comparison of CESM1 to CESM2 by Bacmeister, J. T., Hannay, C., Medeiros, B., Gettelman, A., Neale, R., Fredriksen, H. B., Lipscomb, W. H., Simpson, I., Bailey, D. A., Holland, M., Lindsay, K., Otto‐Bliesner, B.

“…Abstract We examine the response of the Community Earth System Model Versions 1 and 2 (CESM1 and CESM2) to abrupt quadrupling of atmospheric CO 2…”
Get full text

On the Cause of the 1930s Dust Bowl by Schubert, Siegfried D., Suarez, Max J., Pegion, Philip J., Koster, Randal D., Bacmeister, Julio T.

“…During the 1930s, the United States experienced one of the most devastating droughts of the past century. The drought affected almost two-thirds of the country…”
Get full text