Search Results - "Fomichev, V I"

The HAMMONIA Chemistry Climate Model: Sensitivity of the Mesopause Region to the 11-Year Solar Cycle and CO₂ Doubling by Schmidt, H., Brasseur, G. P., Charron, M., Manzini, E., Giorgetta, M. A., Diehl, T., Fomichev, V. I., Kinnison, D., Marsh, D., Walters, S.

“…This paper introduces the three-dimensional Hamburg Model of the Neutral and Ionized Atmosphere (HAMMONIA), which treats atmospheric dynamics, radiation, and…”
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Stratospheric warming influence on the mesosphere/lower thermosphere as seen by the extended CMAM by Shepherd, M. G., Beagley, S. R., Fomichev, V. I.

“…The response of the upper mesosphere/lower thermosphere region to major sudden stratospheric warming (SSW) is examined employing temperature, winds, NOX and CO…”
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Middle atmosphere response to the solar cycle in irradiance and ionizing particle precipitation by Semeniuk, K., Fomichev, V. I., McConnell, J. C., Fu, C., Melo, S. M. L., Usoskin, I. G.

“…The impact of NOx and HOx production by three types of energetic particle precipitation (EPP), auroral zone medium and high energy electrons, solar proton…”
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Coupled chemistry climate model simulations of the solar cycle in ozone and temperature by Austin, J., Tourpali, K., Rozanov, E., Akiyoshi, H., Bekki, S., Bodeker, G., Brühl, C., Butchart, N., Chipperfield, M., Deushi, M., Fomichev, V. I., Giorgetta, M. A., Gray, L., Kodera, K., Lott, F., Manzini, E., Marsh, D., Matthes, K., Nagashima, T., Shibata, K., Stolarski, R. S., Struthers, H., Tian, W.

“…The 11‐year solar cycles in ozone and temperature are examined using new simulations of coupled chemistry climate models. The results show a secondary maximum…”
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Response of the Middle Atmosphere to CO₂ Doubling: Results from the Canadian Middle Atmosphere Model by Fomichev, V. I., Jonsson, A. I., De Grandpré, J., Beagley, S. R., Mclandress, C., Semeniuk, K., Shepherd, T. G.

“…The Canadian Middle Atmosphere Model (CMAM) has been used to examine the middle atmosphere response to CO₂ doubling. The radiative-photochemical response…”
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Impact of middle-atmospheric composition changes on greenhouse cooling in the upper atmosphere by Akmaev, R.A., Fomichev, V.I., Zhu, X.

“…The greenhouse effect, commonly associated with lower-atmospheric warming, manifests as cooling in the middle and upper atmosphere. Carbon dioxide is the main…”
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Review of mesospheric temperature trends by Beig, G., Keckhut, P., Lowe, R. P., Roble, R. G., Mlynczak, M. G., Scheer, J., Fomichev, V. I., Offermann, D., French, W. J. R., Shepherd, M. G., Semenov, A. I., Remsberg, E. E., She, C. Y., Lübken, F. J., Bremer, J., Clemesha, B. R., Stegman, J., Sigernes, F., Fadnavis, S.

“…In recent times it has become increasingly clear that releases of trace gases from human activity have a potential for causing change in the upper atmosphere…”
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Large-scale dynamics of the mesosphere and lower thermosphere: An analysis using the extended Canadian Middle Atmosphere Model by McLandress, C., Ward, W. E., Fomichev, V. I., Semeniuk, K., Beagley, S. R., McFarlane, N. A., Shepherd, T. G.

“…The extended Canadian Middle Atmosphere Model is used to investigate the large‐scale dynamics of the mesosphere and lower thermosphere (MLT). It is shown that…”
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Doubled CO2-induced cooling in the middle atmosphere: Photochemical analysis of the ozone radiative feedback by Jonsson, A. I., de Grandpré, J., Fomichev, V. I., McConnell, J. C., Beagley, S. R.

“…Simple radiative arguments predict that the impact of CO2 increases on the stratosphere and mesosphere should be a cooling and that the magnitude of the…”
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Coupled chemistry climate model simulations of stratospheric temperatures and their trends for the recent past by Austin, J., Wilson, R. J., Akiyoshi, H., Bekki, S., Butchart, N., Claud, C., Fomichev, V. I., Forster, P., Garcia, R. R., Gillett, N. P., Keckhut, P., Langematz, U., Manzini, E., Nagashima, T., Randel, W. J., Rozanov, E., Shibata, K., Shine, K. P., Struthers, H., Thompson, D. W. J., Wu, F., Yoden, S.

“…Temperature results from multi‐decadal simulations of coupled chemistry climate models for the recent past are analyzed using multi‐linear regression including…”
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Ozone climatology using interactive chemistry: Results from the Canadian Middle Atmosphere Model by Grandpré, J., Beagley, S. R., Fomichev, V. I., Griffioen, E., McConnell, J. C., Medvedev, A. S., Shepherd, T. G.

“…The climatology of ozone produced by the Canadian Middle Atmosphere Model (CMAM) is presented. This three‐dimensional global model incorporates the radiative…”
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Analysis of Different Solar Spectral Irradiance Reconstructions and Their Impact on Solar Heating Rates by Thuillier, G., Melo, S. M. L., Lean, J., Krivova, N. A., Bolduc, C., Fomichev, V. I., Charbonneau, P., Shapiro, A. I., Schmutz, W., Bolsée, D.

“…Proper numerical simulation of the Earth’s climate change requires reliable knowledge of solar irradiance and its variability on different time scales, as well…”
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The radiative energy budget of the middle atmosphere and its parameterization in general circulation models by Fomichev, V.I.

“…The thermal regime of the middle atmosphere is determined to a great extent by the balance between the incoming solar and outgoing infrared radiation. To…”
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Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N 2 O), and methane (CH 4 ) with observations from Odin/SMR, ACE-FTS, and Aura/MLS by Jin, J. J., Semeniuk, K., Beagley, S. R., Fomichev, V. I., Jonsson, A. I., McConnell, J. C., Urban, J., Murtagh, D., Manney, G. L., Boone, C. D., Bernath, P. F., Walker, K. A., Barret, B., Ricaud, P., Dupuy, E.

“…Simulations of CO, N2O and CH4 from a coupled chemistry-climate model (CMAM) are compared with satellite measurements from Odin Sub-Millimeter Radiometer…”
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A model estimate of cooling in the mesosphere and lower thermosphere due to the CO2 Increase over the last 3-4 decades by Akmaev, R. A., Fomichev, V. I.

“…Long‐term observations indicate a substantial cooling in the mesosphere and lower thermosphere (MLT) over the last 3–4 decades. Available model studies have…”
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Amplification of the mesospheric diurnal tide in a doubled CO2 atmosphere by McLandress, C., Fomichev, V. I.

“…The impact of doubled CO2 on the vertically propagating migrating diurnal tide in the mesosphere is studied using the Canadian Middle Atmosphere Model (CMAM),…”
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Solar heating by the near-IR CO2 bands in the mesosphere by Fomichev, V. I., Ogibalov, V. P., Beagley, S. R.

“…Absorption of solar energy by the near‐infrared (NIR) CO2 bands provides an important source of heating in the mesosphere. At 60–85 km, this source exceeds 1 K…”
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Cooling of the mesosphere and lower thermosphere due to doubling of CO2 by AKMAEV, R. A, FOMICHEV, V. I

“…A new parameterization of infrared radiative transfer in the 15-μm CO2 band has been incorporated into the Spectral mesosphere/lower thermosphere model…”
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Model thermal response to minor radiative energy sources and sinks in the middle atmosphere by Fomichev, V. I., Fu, C., de Grandpré, J., Beagley, S. R., Ogibalov, V. P., McConnell, J. C.

“…This paper presents the thermal response of the Canadian middle atmosphere model (CMAM) to minor radiative energy sources and sinks. These include chemical…”
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First multi-year occultation observations of CO2 in the MLT by ACE satellite: observations and analysis using the extended CMAM by P. F. Bernath, J. C. McConnell, K. Semeniuk, J. J. Jin, V. I. Fomichev, S. R. Beagley, C. D. Boone

“…This paper presents the first global set of observations of CO2 in the mesosphere and lower thermosphere (MLT) obtained by the ACE-FTS instrument on SCISAT-I,…”
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