Journal ArticleDOI
Developments in UHF lower tropospheric wind profiling at NOAA's Aeronomy Laboratory
D. A. Carter,Kenneth S. Gage,Warner L. Ecklund,Wayne M. Angevine,Paul E. Johnston,A. C. Riddle,J. S. Wilson,Christopher R. Williams +7 more
TLDR
An overview of the architecture of the UHF profiler system as it has evolved over the past decade including the development of radio acoustic sounding system (RASS) capabilities is presented in this paper.Abstract:
Developments in UHF profiling at 915 MHz are presented. Recent advances in UHF profiling are traced to early developments beginning about 8 years ago in the Aeronomy Laboratory at 915 MHz using microstrip antennas. This paper presents an overview of the architecture of the UHF profiler system as it has evolved over the past decade including the development of radio acoustic sounding system (RASS) capabilities. Hardware and software components are described and operational performance is summarized from experience gained from many installations, primarily from those in the tropics. Applications to wind profiling, boundary layer height determination, flux measurement, and precipitation profiling are considered.read more
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The Tropical Ocean‐Global Atmosphere observing system: A decade of progress
Michael J. McPhaden,Antonio J. Busalacchi,Robert E. Cheney,Jean-René Donguy,Kenneth S. Gage,David Halpern,Ming Ji,Paul R. Julian,Gary Meyers,Gary T. Mitchum,Pearn P. Niiler,Joël Picaut,Richard W. Reynolds,Neville Smith,Kensuke Takeuchi +14 more
TL;DR: A major accomplishment of the recently completed Tropical Ocean-Global Atmosphere (TOGA) Program was the development of an ocean observing system to support seasonal-to-interannual climate studies.
Journal ArticleDOI
Satellite and CALJET Aircraft Observations of Atmospheric Rivers over the Eastern North Pacific Ocean during the Winter of 1997/98
TL;DR: The authors used a unique combination of airborne and satellite observations to characterize narrow regions of strong horizontal water vapor flux associated with polar cold fronts that occurred over the eastern North Pacific Ocean during the winter of 1997/98.
Journal ArticleDOI
Flooding on California's Russian River : Role of atmospheric rivers
F. Martin Ralph,Paul J. Neiman,Gary A. Wick,Seth I. Gutman,Michael D. Dettinger,Daniel R. Cayan,Allen B. White +6 more
TL;DR: In this article, experimental observations collected during meteorological field studies conducted by the National Oceanic and Atmospheric Administration near the Russian River of coastal northern California are combined with SSM/I satellite observations offshore to examine the role of landfalling atmospheric rivers in the creation of flooding.
Journal ArticleDOI
Dropsonde Observations in Low-Level Jets over the Northeastern Pacific Ocean from CALJET-1998 and PACJET-2001: Mean Vertical-Profile and Atmospheric-River Characteristics
TL;DR: In this paper, the mean vertical profiles of kinematic and thermodynamic conditions in the pre-cold-frontal low-level-jet (LLJ) region of extratropical cyclones over the eastern Pacific Ocean over the last decade were collected from NOAA's P-3 aircraft in 10 storms during the California Landfalling Jets Experiment (CALJET) of 1998 and in 7 storms during PACJET of 2001.
Journal ArticleDOI
Boundary Layer Height and Entrainment Zone Thickness Measured by Lidars and Wind-Profiling Radars
TL;DR: In this article, the authors examined measurements of boundary layer height and entrainment zone thickness observed with two lidars and with a radar wind profiler during the Flatland96 Lidars in Flat Terrain experiment.
References
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Journal ArticleDOI
TOGA COARE: The Coupled Ocean-Atmosphere Response Experiment.
Peter J. Webster,Roger Lukas +1 more
TL;DR: In this article, the authors present a simulation of the western Pacific warm pool, the region of the warmest sea surface temperature in the open oceans, which coexists with the largest annual precipitation and latent heat release in the atmosphere.
Journal ArticleDOI
Objective Determination of the Noise Level in Doppler Spectra
Peter H. Hildebrand,R. S. Sekhon +1 more
TL;DR: In this article, a method is described for the objective determination of the noise level in Doppler spectra, which makes use of the physical properties of white noise and is suitable for automatic computation.
Journal ArticleDOI
Boundary-layer depth and entrainment zone characterization with a boundary-layer profiler
TL;DR: In this paper, a technique for determining the height of the convective atmospheric boundary layer (CBL) with a 915 MHz boundary-layer profiler is discussed, and the results are compared with CBL heights determined from radiosonde measurements.
Journal ArticleDOI
Classification of Precipitating Clouds in the Tropics Using 915-MHz Wind Profilers
TL;DR: In this paper, an algorithm was developed that classifies precipitating clouds into either stratiform, mixed stratiform/convective, deep convective, or shallow convective clouds by analyzing the vertical structure of reflectivity, velocity, and spectral width derived from measurements made with the vertical beam of a 915-MHz Doppler wind profiler.
Journal ArticleDOI
A UHF Wind Profiler for the Boundary Layer: Brief Description and Initial Results
TL;DR: In this paper, a boundary layer radar was developed at NOAA's Aeronomy Laboratory for use in a hybrid mode with existing 50 MHz profilers in the tropical Pacific, and the system can equally be a stand-alone device to study boundary layer problems.