Zobrazeno 1 - 10
of 29
pro vyhledávání: '"J. P. McCormack"'
Publikováno v:
Annales Geophysicae, Vol 42, Pp 255-269 (2024)
Recent advances in atmospheric observations and modeling have enabled the investigation of thermosphere–ionosphere interactions as a whole-atmosphere problem. This study examines how dynamical variability in the middle atmosphere (MA) affects intra
Externí odkaz:
https://doaj.org/article/fd50b488ebad4315b5f44b23a3eda83c
Autor:
J. P. McCormack, V. L. Harvey, C. E. Randall, N. Pedatella, D. Koshin, K. Sato, L. Coy, S. Watanabe, F. Sassi, L. A. Holt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 17577-17605 (2021)
Detailed meteorological analyses based on observations extending through the middle atmosphere (∼ 15 to 100 km altitude) can provide key information to whole atmosphere modeling systems regarding the physical mechanisms linking day-to-day changes i
Externí odkaz:
https://doaj.org/article/f82b4f6e5662413dbc094a6bbbf332e8
Autor:
D. E. Siskind, V. L. Harvey, F. Sassi, J. P. McCormack, C. E. Randall, M. E. Hervig, S. M. Bailey
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 14059-14077 (2021)
We use the Specified Dynamics version of the Whole Atmosphere Community Climate Model Extended (SD-WACCMX) to model the descent of nitric oxide (NO) and other mesospheric tracers in the extended, elevated stratopause phase of the 2013 sudden stratosp
Externí odkaz:
https://doaj.org/article/4d77633a64f14a3687f6a4bb1a36a005
Publikováno v:
Annales Geophysicae, Vol 38, Pp 1257-1265 (2020)
This study uses hourly meteor wind measurements from a longitudinal array of 10 high-latitude SuperDARN high-frequency (HF) radars to isolate the migrating diurnal, semidiurnal, and terdiurnal tides at mesosphere–lower-thermosphere (MLT) altitudes.
Externí odkaz:
https://doaj.org/article/42a77496b5bc4cffa4c22c594ee5ee4b
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 11979-12010 (2020)
Recent studies have shown that day-to-day variability of the migrating semidiurnal solar (SW2) tide within the mesosphere and lower thermosphere (MLT) is a key driver of anomalies in the thermosphere–ionosphere system. Here, we study the variabilit
Externí odkaz:
https://doaj.org/article/329e12b5b01d4ecfa98a0d8f0e1981b2
Autor:
D. E. Siskind, M. Jones Jr., D. P. Drob, J. P. McCormack, M. E. Hervig, D. R. Marsh, M. G. Mlynczak, S. M. Bailey, A. Maute, N. J. Mitchell
Publikováno v:
Annales Geophysicae, Vol 37, Pp 37-48 (2019)
We use data from two NASA satellites, the Thermosphere Ionosphere Energetics and Dynamics (TIMED) and the Aeronomy of Ice in the Mesosphere (AIM) satellites, in conjunction with model simulations from the thermosphere-ionosphere-mesosphere-electrodyn
Externí odkaz:
https://doaj.org/article/6a1060cc06e34a8a85565f3aa67bd0fc
Publikováno v:
Atmospheric Chemistry and Physics, Vol 8, Iss 24, Pp 7519-7532 (2008)
This paper describes CHEM2D-H2O, a new parameterization of H2O photochemical production and loss based on the CHEM2D photochemical-transport model of the middle atmosphere. This parameterization accounts for the altitude, latitude, and seasonal varia
Externí odkaz:
https://doaj.org/article/9318c291b3fa4c70b236407f4c197999
Autor:
K. W. Hoppel, N. L. Baker, L. Coy, S. D. Eckermann, J. P. McCormack, G. E. Nedoluha, D. E. Siskind
Publikováno v:
Atmospheric Chemistry and Physics, Vol 8, Iss 20, Pp 6103-6116 (2008)
The forecast model and three-dimensional variational data assimilation components of the Navy Operational Global Atmospheric Prediction System (NOGAPS) have each been extended into the upper stratosphere and mesosphere to form an Advanced Level Physi
Externí odkaz:
https://doaj.org/article/910379c0be3c4f20a9321d8d7b4464e5
Publikováno v:
Atmospheric Chemistry and Physics, Vol 7, Iss 11, Pp 2917-2935 (2007)
The innovations or observation minus forecast (O–F) residuals produced by a data assimilation system provide a convenient metric of evaluating global analyses. In this study, O–F statistics from the Global Ozone Assimilation Testing System (GOATS
Externí odkaz:
https://doaj.org/article/08aaf8148d094cb380d7c237fa669e58
Publikováno v:
Atmospheric Chemistry and Physics, Vol 7, Iss 3, Pp 939-959 (2007)
This paper evaluates the performance of various linear ozone photochemistry parametrizations using the stratosphere-troposphere data assimilation system of the Met Office. A set of experiments were run for the period 23 September 2003 to 5 November 2
Externí odkaz:
https://doaj.org/article/4f0195da114f4fd4a8525bbbfe655722