Search Results

You are looking at 1 - 7 of 7 items for :

  • Data quality control x
  • DEEPWAVE: The Deep Propagating Gravity Wave Experiment x
  • All content x
Clear All
Stephen D. Eckermann, Jun Ma, Karl W. Hoppel, David D. Kuhl, Douglas R. Allen, James A. Doyle, Kevin C. Viner, Benjamin C. Ruston, Nancy L. Baker, Steven D. Swadley, Timothy R. Whitcomb, Carolyn A. Reynolds, Liang Xu, N. Kaifler, B. Kaifler, Iain M. Reid, Damian J. Murphy, and Peter T. Love

systems. Thus, unlike data from other satellite nadir sensors, which are averaged and thinned by the NAVGEM preprocessor (PP) and quality control (QC) algorithms, SSMIS radiance averaging is performed prior to transfer of the data to NAVGEM by onboard flight software and then by the SSMIS Unified Preprocessor (UPP; Bell et al. 2008 ). The original UPP has been modified to increase the spatial averaging of UAS radiances, as well as adding information necessary for the UAS-channel components of the

Full access
Sonja Gisinger, Andreas Dörnbrack, Vivien Matthias, James D. Doyle, Stephen D. Eckermann, Benedikt Ehard, Lars Hoffmann, Bernd Kaifler, Christopher G. Kruse, and Markus Rapp

approximately 9 and 97 km (261–0.001 hPa) with a vertical resolution of about 4 km in the stratosphere and about 14 km near the mesopause. The temporal resolution is 1 day at each location and data are available from August 2004 ( Livesey et al. 2017 ). Note that version 4 MLS data are used and that the most recent recommended quality screening procedures of Livesey et al. (2017) have been applied. The two-dimensional least squares method used by Wu et al. (1995) is applied to the global datasets of ERA

Full access
Stephen D. Eckermann, James D. Doyle, P. Alex Reinecke, Carolyn A. Reynolds, Ronald B. Smith, David C. Fritts, and Andreas Dörnbrack

) CrIS. Zenith weighting functions K j ⁡ ( z ) for individual channels contributing to these means are shown with thin solid lines. Two AIRS data streams were used to create DEEPWAVE stratospheric gravity wave products. Standard (STND) fields used science-quality version 5 (V5) L1B geolocated radiances issued by the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC), generally within 8–72 h of acquisition. These formed the basis for all pre- and postmission scientific

Full access
Ronald B. Smith, Alison D. Nugent, Christopher G. Kruse, David C. Fritts, James D. Doyle, Steven D. Eckermann, Michael J. Taylor, Andreas Dörnbrack, M. Uddstrom, William Cooper, Pavel Romashkin, Jorgen Jensen, and Stuart Beaton

slope and R -squared values are near unity. The scatter suggests a random error in EF z and/or EF zM of about 1 W m −2 . A similar test was performed for T-REX data ( Smith et al. 2008 ) with good agreement (slope = 0.86), but not as good as found here (slope = 0.96). The marked improvement in the current case appears to be due to improved data quality and the geostrophic correction (i.e., detrending) to the pressure field. d. Horizontal energy flux According to linear wave theory, vertically

Full access
Ronald B. Smith and Christopher G. Kruse

controls the u power carries only a fraction of the momentum flux. 9. Conclusions The goal of this paper is to combine theory, aircraft data, and numerical simulation to explain the striking difference between the spectra of different physical variables in New Zealand mountain waves. We used three wavenumber weightings ( k 0 , k 1 , and k 2 ) to identify important short- and long-wave components. According to linear hydrostatic theory, these particular weightings (i.e., types K0, K1, and K2

Full access
David C. Fritts, Ronald B. Smith, Michael J. Taylor, James D. Doyle, Stephen D. Eckermann, Andreas Dörnbrack, Markus Rapp, Bifford P. Williams, P.-Dominique Pautet, Katrina Bossert, Neal R. Criddle, Carolyn A. Reynolds, P. Alex Reinecke, Michael Uddstrom, Michael J. Revell, Richard Turner, Bernd Kaifler, Johannes S. Wagner, Tyler Mixa, Christopher G. Kruse, Alison D. Nugent, Campbell D. Watson, Sonja Gisinger, Steven M. Smith, Ruth S. Lieberman, Brian Laughman, James J. Moore, William O. Brown, Julie A. Haggerty, Alison Rockwell, Gregory J. Stossmeister, Steven F. Williams, Gonzalo Hernandez, Damian J. Murphy, Andrew R. Klekociuk, Iain M. Reid, and Jun Ma

the EOL/Research Aviation Facility (RAF) Aeros and catalog maps tools for displaying real-time aircraft position, flight-level data displays, satellite and model data overlays, dropsonde launches and plots, and lidar and AMTM data sharing. A unique aspect of DEEPWAVE was the ability to make real-time dropsonde deployment decisions at specific points over New Zealand and widely over the Southern Ocean. These data were relayed via satellite to the ground for quality control and processing by EOL

Full access
Christopher G. Kruse and Ronald B. Smith

squares best-fit plane, , producing a full perturbation field, . This step is analogous to detrending conventionally applied to 1D data series before performing Fourier analysis. Deplaning is performed because the following step involves the discrete Fourier transform (DFT) and high-pass filtering. Many fields (e.g., pressure in Fig. 1a ) have synoptic-scale variations and are aperiodic. Performing the DFT on an aperiodic field introduces high-wavenumber spectral artifacts ( Denis et al. 2002

Full access