Search Results - "Dunkerton, T. J"

Tropical cyclogenesis in a tropical wave critical layer: easterly waves by Dunkerton, T. J., Montgomery, M. T., Wang, Z.

“…The development of tropical depressions within tropical waves over the Atlantic and eastern Pacific is usually preceded by a "surface low along the wave" as if…”
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Tropical tropopause layer by Fueglistaler, S., Dessler, A. E., Dunkerton, T. J., Folkins, I., Fu, Q., Mote, P. W.

“…Observations of temperature, winds, and atmospheric trace gases suggest that the transition from troposphere to stratosphere occurs in a layer, rather than at…”
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Impact of environmental moisture on tropical cyclone intensification by Wu, L, Su, H, Fovell, R. G, Dunkerton, T. J, Wang, Z, Kahn, B. H

“…The impacts of environmental moisture on the intensification of a tropical cyclone (TC) are investigated in the Weather Research and Forecasting (WRF) model,…”
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Nearly identical cycles of the quasi‐biennial oscillation in the equatorial lower stratosphere by Dunkerton, T. J.

“…As a nonlinear dynamical system with limit cycles but subject to periodic forcings associated with the seasonal cycle, the quasi‐biennial oscillation (QBO)…”
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The quasi-biennial oscillation by Baldwin, M. P., Gray, L. J., Dunkerton, T. J., Hamilton, K., Haynes, P. H., Randel, W. J., Holton, J. R., Alexander, M. J., Hirota, I., Horinouchi, T., Jones, D. B. A., Kinnersley, J. S., Marquardt, C., Sato, K., Takahashi, M.

“…The quasi‐biennial oscillation (QBO) dominates the variability of the equatorial stratosphere (∼16–50 km) and is easily seen as downward propagating easterly…”
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Stratospheric Harbingers of Anomalous Weather Regimes by Baldwin, Mark P., Dunkerton, Timothy J.

“…Observations show that large variations in the strength of the stratospheric circulation, appearing first above ∼50 kilometers, descend to the lowermost…”
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Coarse, intermediate and high resolution numerical simulations of the transition of a tropical wave critical layer to a tropical storm by Montgomery, M T, Wang, Z, Dunkerton, T J

“…Recent work has hypothesized that tropical cyclones in the deep Atlantic and eastern Pacific basins develop from within the cyclonic Kelvin cat's eye of a…”
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Lagrangian vortices in developing tropical cyclones by Rutherford, B., Dunkerton, T. J., Montgomery, M. T.

“…Tracking pre‐genesis tropical cyclones is important for earlier detection of developing systems as well as targeting potential locations for dropsondes in…”
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Vertical structure of tropospheric winds on gas giants by Scott, R. K., Dunkerton, T. J.

“…Zonal mean zonal velocity profiles from cloud‐tracking observations on Jupiter and Saturn are used to infer latitudinal variations of potential temperature…”
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Dynamical properties of developing tropical cyclones using Lagrangian flow topology by Rutherford, B., Boothe, M. A., Dunkerton, T. J., Montgomery, M. T.

“…The goal of this study is to characterize the dynamics and structure of tropical cyclone formation from global model analyses to determine thresholds marking…”
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Propagation of the Arctic Oscillation from the stratosphere to the troposphere by Baldwin, Mark P., Dunkerton, Timothy J.

“…Geopotential anomalies ranging from the Earth's surface to the middle stratosphere in the northern hemisphere are dominated by a mode of variability known as…”
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Stratospheric Memory and Skill of Extended-Range Weather Forecasts by Baldwin, Mark P., Stephenson, David B., David W. J. Thompson, Dunkerton, Timothy J., Charlton, Andrew J., O'Neill, Alan

“…We use an empirical statistical model to demonstrate significant skill in making extended-range forecasts of the monthly-mean Arctic Oscillation (AO). Forecast…”
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Orthogonal Rotation of Spatial Patterns Derived from Singular Value Decomposition Analysis by Cheng, Xinhua, Dunkerton, Timothy J.

“…Singular value decomposition (SVD) analysis is frequently used to identify pairs of spatial patterns whose time series are characterized by maximum temporal…”
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Alongslope current generated by obliquely incident internal gravity waves by Dunkerton, Timothy J., Delisi, Donald P., Lelong, M.-Pascale

“…A simple laboratory experiment in stratified salt water demonstrates that an obliquely incident internal gravity wave generates a mean horizontal current when…”
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The solar cycle and stratosphere–troposphere dynamical coupling by Baldwin, Mark P., Dunkerton, Timothy J.

“…Observations and modeling studies support the hypothesis that solar cycle/ozone interactions create temperature and wind anomalies in the tropical upper…”
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Quasi-biennial modulation of the southern hemisphere stratospheric polar vortex by Baldwin, Mark P., Dunkerton, Timothy J.

“…Observations reveal that the wintertime southern hemisphere stratospheric polar vortex is modulated by the phase of the equatorial quasi‐biennial oscillation…”
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Vertical velocity, vertical diffusion, and dilution by midlatitude air in the tropical lower stratosphere by Mote, Philip W., Dunkerton, Timothy J., McIntyre, Michael E., Ray, Eric A., Haynes, Peter H., Russell, James M.

“…Air passing upward through the tropical tropopause is “marked” by an annually varying water vapor mixing ratio much as a tape recorder marks a magnetic tape;…”
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Kelvin wave signatures in stratospheric trace constituents by Mote, Philip W., Dunkerton, Timothy J.

“…Connections, sometimes tenuous, have previously been noted between stratospheric Kelvin waves and several stratospheric trace constituents. The present study…”
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Kelvin waves in stratospheric temperature observed by the Microwave Limb Sounder by Mote, Philip W., Dunkerton, Timothy J., Wu, Dong

“…The three‐dimensional (3‐D) structure of stratospheric Kelvin waves is revealed using data from the Microwave Limb Sounder for the period July 1992 to April…”
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Biennial, quasi-biennial, and decadal oscillations of potential vorticity in the northern stratosphere by Baldwin, Mark P., Dunkerton, Timothy J.

“…Seasonal and interannual variations of the northern hemisphere stratosphere on the 600 K isentropic surface (20–35 hPa) are investigated by using observations…”
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