Zobrazeno 1 - 10
of 24
pro vyhledávání: '"S. D. Eckermann"'
Autor:
P. A. Inchin, A. Bhatt, S. A. Cummer, S. D. Eckermann, B. J. Harding, D. D. Kuhl, J. Ma, J. J. Makela, R. Sabatini, J. B. Snively
Publikováno v:
AGU Advances, Vol 4, Iss 6, Pp n/a-n/a (2023)
Abstract The Hunga‐Tonga Hunga‐Ha'apai volcano underwent a series of large‐magnitude eruptions that generated broad spectra of mechanical waves in the atmosphere. We investigate the spatial and temporal evolutions of fluctuations driven by atmo
Externí odkaz:
https://doaj.org/article/d6540e0d815a413ab0b1e45c6034f537
Autor:
I. Krisch, P. Preusse, J. Ungermann, A. Dörnbrack, S. D. Eckermann, M. Ern, F. Friedl-Vallon, M. Kaufmann, H. Oelhaf, M. Rapp, C. Strube, M. Riese
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 14937-14953 (2017)
Atmospheric gravity waves are a major cause of uncertainty in atmosphere general circulation models. This uncertainty affects regional climate projections and seasonal weather predictions. Improving the representation of gravity waves in general c
Externí odkaz:
https://doaj.org/article/b7942af8cf87491ca739b407fd59553d
Autor:
Q. T. Trinh, S. Kalisch, P. Preusse, M. Ern, H.-Y. Chun, S. D. Eckermann, M.-J. Kang, M. Riese
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 7335-7356 (2016)
Convection as one dominant source of atmospheric gravity waves (GWs) has been the focus of investigation over recent years. However, its spatial and temporal forcing scales are not well known. In this work we address this open issue by a systemati
Externí odkaz:
https://doaj.org/article/8efd01ef0e8c492589b3123034940935
Publikováno v:
Atmospheric Measurement Techniques, Vol 8, Iss 3, Pp 1491-1517 (2015)
This paper describes a comprehensive observational filter for satellite infrared limb sounding of gravity waves. The filter considers instrument visibility and observation geometry with a high level of accuracy. It contains four main processes: vi
Externí odkaz:
https://doaj.org/article/78f7c07781db45ed85183cc9d55632bd
Publikováno v:
Annales Geophysicae, Vol 32, Pp 1373-1394 (2014)
Absolute values of gravity wave momentum flux (GWMF) deduced from satellite measurements by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument and the High Resolution Dynamics Limb Sounder (HIRDLS) are correlated
Externí odkaz:
https://doaj.org/article/cf2e0038c3854564ad44469141631416
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 19, Pp 10483-10508 (2014)
Global model data from the European Centre for Medium-Range Weather Forecasts (ECMWF) are analyzed for resolved gravity waves (GWs). Based on fitted 3-D wave vectors of individual waves and using the ECMWF global scale background fields, backward ray
Externí odkaz:
https://doaj.org/article/d1e913ee3dae489b9d41aab65d3c1e5a
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 4, Pp 1701-1720 (2012)
As the first gravity wave (GW) climatology study using nadir-viewing infrared sounders, 50 Atmospheric Infrared Sounder (AIRS) radiance channels are selected to estimate GW variances at pressure levels between 2–100 hPa. The GW variance for each sc
Externí odkaz:
https://doaj.org/article/d4890a97c994438eb23ee29147455674
Publikováno v:
Atmospheric Chemistry and Physics, Vol 9, Iss 20, Pp 7973-7995 (2009)
Kelvin waves excited by tropospheric convection are considered to be one of the main drivers of the stratospheric quasi-biennial oscillation (QBO). In this paper we combine several measured data sets with the Gravity wave Regional Or Global RAy Trace
Externí odkaz:
https://doaj.org/article/d6036b96509b479b87c31c6fde1de831
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