An official website of the United States government
Data from the Colorado State University (CSU) CHIVO radar located near Fort Collins, Colorado during the Pre-CIP_2021 (Preparatory Rockies Experiment for the Campaign In the Pacific 2021) campaign from May-August 2021. CHIVO is a C-band, dual-polarization radar that conducted RHI and surveillance scans.
more »
« less
Pre-CIP_2021: CSU-CHILL Radar Data. Version 1.0
Data from the Colorado State University (CSU) CHILL radar located near Greeley, Colorado during the Pre-CIP_2021 (Preparatory Rockies Experiment for the Campaign In the Pacific 2021) campaign in July and August 2021. CHILL is a dual wavelength S- and X-band, dual-polarization radar that conducted RHI and surveillance scans.
more »
« less
- Award ID(s):
- 1854559
- PAR ID:
- 10562190
- Publisher / Repository:
- UCAR/NCAR - Earth Observing Laboratory
- Date Published:
- Subject(s) / Keyword(s):
- Radar CSU CHILL Radar Fixed Observation Stations In Situ Land-based Platforms > > FIXED OBSERVATION STATIONS > > 2219e7fa-9fd0-443d-ab1b-62d1ccf41a89 Doppler Radar Active Remote Sensing > Profilers/Sounders > Radar Sounders > DOPPLER RADAR > > eb04b68b-0652-4881-a933-c84602364ee5 Earth Remote Sensing Instruments > Active Remote Sensing > Profilers/Sounders > Radar Sounders > RADAR > Radio Detection and Ranging> 6d513201-491c-4359-8e8f-20acb6a6537e Polarimetric Radar Earth Remote Sensing Instruments > Active Remote Sensing > Imaging Radars > > Polarimetric Radar > Polarimetric Radar > 042e5575-eb33-4c45-a708-3df3555afff6 EARTH SCIENCE > ATMOSPHERE > CLOUDS > CONVECTIVE CLOUDS/SYSTEMS (OBSERVED/ANALYZED) > PRECIPITATING CONVECTIVE CLOUD SYSTEMS EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RADAR REFLECTIVITY EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > HYDROMETEORS EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > DOPPLER VELOCITY EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > SPECTRUM WIDTH Pre-CIP_2021 Preparatory Rockies Experiment for the Campaign In the Pacific 2021
- Format(s):
- Medium: X Size: 28 data files; 1 ancillary/documentation file; 60 GiB Other: TAR/GNU Zip (.tar.gz/.tgz) (application/x-gzip)
- Size(s):
- 28 data files 1 ancillary/documentation file 60 GiB
- Location:
- (Latitude:40.45000; Longitude:-104.64000)
- Right(s):
- These data are available to be used subject to the University Corporation for Atmospheric Research ("UCAR") terms and conditions.
- Institution:
- Colorado State University
- Sponsoring Org:
- National Science Foundation
More Like this
-
-
Data from the Colorado State University (CSU) Sea-Going Polarimetric (SEA-POL) radar that was deployed on Yonaguni (a Japanese island to the east of Taiwan) for the PRECIP (Prediction of Rainfall Extremes Campaign in the Pacific) campaign from June to August 2022. SEA-POL is a deployable C-band dual-polarization radar that conducted RHI and surveillance scans on 12-minute cycles.more » « less
-
null (Ed.)The Shigaraki unmanned aerial vehicle (UAV)-Radar Experiment (ShUREX) is an international (USA-Japan-France) observational campaign, whose overarching goal is to demonstrate the utility of small, lightweight, inexpensive, autonomous UAVs in probing and monitoring the lower troposphere and to promote synergistic use of UAVs and very high frequency (VHF) radars. The 2-week campaign lasting from June 1 to June 14, 2015, was carried out at the Middle and Upper Atmosphere (MU) Observatory in Shigaraki, Japan. During the campaign, the DataHawk UAV, developed at the University of Colorado, Boulder, and equipped with high-frequency response cold wire and pitot tube sensors (as well as an iMET radiosonde), was flown near and over the VHF-band MU radar. Measurements in the atmospheric column in the immediate vicinity of the radar were obtained. Simultaneous and continuous operation of the radar in range imaging mode enabled fine-scale structures in the atmosphere to be visualized by the radar. It also permitted the UAV to be commanded to sample interesting structures, guided in near real time by the radar images. This overview provides a description of the ShUREX campaign and some interesting but preliminary results of the very first simultaneous and intensive probing of turbulent structures by UAVs and the MU radar. The campaign demonstrated the validity and utility of the radar range imaging technique in obtaining very high vertical resolution (~20 m) images of echo power in the atmospheric column, which display evolving fine-scale atmospheric structures in unprecedented detail. The campaign also permitted for the very first time the evaluation of the consistency of turbulent kinetic energy dissipation rates in turbulent structures inferred from the spectral broadening of the backscattered radar signal and direct, in situ measurements by the high-frequency response velocity sensor on the UAV. The data also enabled other turbulence parameters such as the temperature structure function parameter C2T and refractive index structure function parameter C2n to be measured by sensors on the UAV, along with radar-inferred refractive index structure function parameter C2 n;radar. The comprehensive dataset collected during the campaign (from the radar, the UAV, the boundary layer lidar, the ceilometer, and radiosondes) is expected to help obtain a better understanding of turbulent atmospheric structures, as well as arrive at a better interpretation of the radar data.more » « less
-
null (Ed.)Abstract The Precipitation Occurrence Sensor System (POSS) is a small X-band Doppler radar that measures the Doppler velocity spectra from precipitation falling in a small volume near the sensor. The sensor records a 2D frequency of occurrence matrix of the velocity and power at the mode of each spectrum measured over 1 min. The centroid of the distribution of these modes, along with other spectral parameters, defines a data vector input to a multiple discriminant analysis (MDA) for classification of the precipitation type. This requires the a priori determination of a training set for different types, particle size distributions (PSDs), and wind speed conditions. A software model combines POSS system parameters, a particle scattering cross section, and terminal velocity models, to simulate the real-time Doppler signal measured by the system for different PSDs and wind speeds. This is processed in the same manner as the system hardware to produce bootstrap samples of the modal centroid distributions for the MDA training set. MDA results are compared to images from the Multi-Angle Snowflake Camera (MASC) at the MASCRAD site near Easton, Colorado, and to the CSU–CHILL X-band radar observations from Greeley, Colorado. In the four case studies presented, POSS successfully identified precipitation transitions through a range of types (rain, graupel, rimed dendrites, aggregates, unrimed dendrites). Also two separate events of hail were reported and confirmed by the images.more » « less
-
Data from the Parsivel disdrometer that was deployed on Yonaguni (a Japanese island to the east of Taiwan) for the PRECIP (Prediction of Rainfall Extremes Campaign in the Pacific) campaign from June to August 2022. It was deployed near the CSU SEA-POL dual-polarization radar to obtain drop-size distribution measurements in Mei-yu fronts, thunderstorms, and tropical cyclones.more » « less
