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Space‐borne cloud and precipitation radars: status, challenges and ways forward

Alessandro Battaglia, Pavlos Kollias, Ranvir Dhillon, Richard Roy, Simone Tanelli, Katia Lamer, Mircea Grecu, Matthew Lebsock, Daniel Watters, Kamil Mroz, Gerald Heymsfield, Lihua Li (+1 others)
2020 Reviews of Geophysics  
the next generation of spaceborne radar systems.  ...  Spaceborne radars offer a unique three-dimensional view of the atmospheric components of the Earth's hydrological cycle.  ...  The first ground-breaking airborne dual-frequency rain radar-radiometer system, developed in the 1980s by the Communications Research Laboratory (CRL) of Japan, paved the way toward the design of the first  ... 
doi:10.1029/2019rg000686 pmid:32715303 pmcid:PMC7375167 fatcat:lwxz6lauxbgfjinn76s7jn3ura

Velocity–Azimuth Display Analysis of Doppler Velocity for HIWRAP

Lin Tian, Gerald M. Heymsfield, Anthony C. Didlake, Stephen Guimond, Lihua Li
2015 Journal of Applied Meteorology and Climatology  
The velocity-azimuth display (VAD) analysis technique established for ground-based scanning radar is applied to the NASA High-Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP).  ...  The VAD technique provides a mean vertical profile of the horizontal winds for each complete conical scan of the HIWRAP radar.  ...  We thank Professor Ramesh Srivastava for insightful discussions and for suggesting some of the analysis method. We also thank Dr.  ... 
doi:10.1175/jamc-d-14-0054.1 fatcat:2hpnbbwe2vh7ripkocycvji4ea

Concept Design of the "Guanlan" Science Mission: China's Novel Contribution to Space Oceanography

Ge Chen, Junwu Tang, Chaofang Zhao, Songhua Wu, Fangjie Yu, Chunyong Ma, Yongsheng Xu, Weibiao Chen, Yunhua Zhang, Jie Liu, Lixin Wu
2019 Frontiers in Marine Science  
As an expanded follow-up of SWOT and an oceanic counterpart of CALIPSO, the planned "Guanlan" science mission comprises a dual-frequency (Ku and Ka) interferometric altimetry (IA), and a near-nadir pointing  ...  (i) The dual-frequency IA ensures a wider swath and a shorter repeat cycle which leads to a significantly improved temporal and spatial resolution up to days and kilometers.  ...  This research was supported by the Qingdao National Laboratory for Marine Science and Technology of China under grants numbers 2018SDKJ102 and 2015ASTP-OS15.  ... 
doi:10.3389/fmars.2019.00194 fatcat:edvx6peqrvbbpl4ajkvmclxofu

Error Analysis of a Conceptual Cloud Doppler Stereoradar with Polarization Diversity for Better Understanding Space Applications

Alessandro Battaglia, Pavlos Kollias
2015 Journal of Atmospheric and Oceanic Technology  
Such a radar design is intended for observing the microphysical and dynamical structures of cloud systems, including disturbed mesoscale convective systems.  ...  An error budget analysis is performed for retrieval of along-track winds based on the design of a spaceborne Doppler radar using polarization diversity.  ...  Tanelli and Dr. A. Parodi. We thank Prof. E. Smith for his meticulous revision of the paper.  ... 
doi:10.1175/jtech-d-14-00015.1 fatcat:k6dcnsmhwnbrrmsglpnb67lunu

The TRIple-frequency and Polarimetric radar Experiment for improving process observations of winter precipitation

José Dias Neto, Stefan Kneifel, Davide Ori, Silke Trömel, Jan Handwerker, Birger Bohn, Normen Hermes, Kai Mühlbauer, Martin Lenefer, Clemens Simmer
2019 Earth System Science Data  
</strong> This paper describes a 2-month dataset of ground-based triple-frequency (X, Ka, and W band) Doppler radar observations during the winter season obtained at the Jülich ObservatorY for Cloud Evolution  ...  The large number of ice clouds included in the dataset allows for a first statistical analysis of their multifrequency radar signatures.  ...  developed during the High Definition Clouds and Precipitation for advancing Climate Prediction HD(CP) 2 project funded by the German Ministry for Education and Research under grants 01LK1209B and 01LK1502E  ... 
doi:10.5194/essd-11-845-2019 fatcat:ncqzvxh7bzbzflbk7au66kml6u

The Global Precipitation Measurement Mission

Arthur Y. Hou, Ramesh K. Kakar, Steven Neeck, Ardeshir A. Azarbarzin, Christian D. Kummerow, Masahiro Kojima, Riko Oki, Kenji Nakamura, Toshio Iguchi
2014 Bulletin of The American Meteorological Society - (BAMS)  
The observatory carries the first spaceborne dual-frequency phased array precipitation radar, the DPR, operating at Ku and Ka bands (13 and 35 GHz, respectively) and a conical-scanning multichannel (10  ...  , characterization, PSD, precipitation with vertical structure Swath, IFOV (Ku, Ka, combined Ku/Ka) Level 2 combined GMI/DPR Latency ~3 h Precipitation Swath, IFOV (initially at DPR Ku swath  ... 
doi:10.1175/bams-d-13-00164.1 fatcat:yn47eblptzar3ir65owf55znve

Standardized testing conditions for satellite communications on-the-move (SOTM) terminals

Mostafa Alazab Elkhouly, Jonas König, Niklas Beuster, Florian Raschke, Alexander Ihlow, Colin Robinson, Raul Orus-Perez, Fritz Schurig, Andreas Knopp, Albert Heuberger, Markus Landmann, Giovanni Del Galdo
2018 International Journal of Satellite Communications And Networking  
A major contribution of this thesis is represented by the development of motion and shadowing profiles suitable for standardization of SOTM testing.  ...  Important performance parameters, such as, antenna de-pointing and Adjacent Satellite Interference (ASI) can be accurately measured and evaluated.  ...  FCC p25.226 p25.138 p25.222 p25.138 -p25.138 -p25.138 Land mobile Maritime Airborne Railway Ku Ka Ku Ka Ku Ka Ku Ka ITU R 728-1 R S.524 R 728-1 R S.524 R 728-1 R S.524 R 728-1 R S.524 R  ... 
doi:10.1002/sat.1272 fatcat:cuwy6xtx2rdptozc2e3xzeg6um

Wideband Backscattering From Alpine Snow Cover: A Full-Season Study

Reza Naderpour, Mike Schwank, Derek Houtz, Charles Werner, Christian Matzler
2021 IEEE Transactions on Geoscience and Remote Sensing  
This article experimentally investigates relationships between copol backscattering at a wide range of frequencies (L-to Ka-bands) and snow-ground state parameters (SPs) in different evolution phases during  ...  Under dry snow conditions and at low and intermediate frequencies, ground permittivity is the major influencer of backscatter at a time scale of roughly two weeks.  ...  For each FB, a pair of identical quad-ridged (QR) horn antennas [59] is used. These dual-polarization antennas are constructed to have nearly identical radiation patterns for H-and V-polarizations.  ... 
doi:10.1109/tgrs.2021.3112772 fatcat:lo3se2sz5vgxde5art3liefl5i

A polarimetric radar operator to evaluate precipitation from the COSMO atmospheric model

Daniel Wolfensberger
2018
Mes sincères remerciements aussi à la division Radar, satellites et nowcasting de MeteoSuisse à Locarno, pour le partage des données radar opérationnelles et du composite radar.  ...  Je remercie avant tout Alexis Berne pour le temps précieux qu'il a consacré à cette thèse, pour sa confiance et pour ses conseils avisés.  ...  Remerciements Remerciements scattering techniques is investigated, revealing that these methods could help to resolve the strong underestimation of polarimetric variables in snow and graupel.  ... 
doi:10.5075/epfl-thesis-8408 fatcat:yjtj24muuvhormwhpghuvtjs7a

CHALLENGES IN MEASURING WINTER PRECIPITATION: ADVANCES IN COMBINING MICROWAVE REMOTE SENSING AND SURFACE OBSERVATIONS

Von Annkaisa, Lerber
unpublished
ISBN 978-952-60-7790-1 (printed) ISBN 978-952-60-7791-8 (pdf) ISSN-L 1799-4934 ISSN 1799-4934 (printed) ISSN 1799-4942 (pdf) http://urn.fi/URN:ISBN:978-952-60-7791-8 Images: The cover image presents a  ...  So far there are only a few suitable active sensors operating such as Cloud Profiling Radar (CPR) at W-band and Dual-Frequency Precipitation Radar (DPR) at Ku/Ka-band.  ...  Weather radars The modern weather radars are typically dual-polarization Doppler pulse radars. A pulse radar transmits a short high-power pulse directed with an antenna to the observed target.  ... 
fatcat:jgzzfbeuqrct3i7ufcxol65ela

The Joint IPWG/GEWEX Precipitation Assessment [article]

Rémy Roca, Zaid S. Haddad, Fumie F. Akimoto, Alexander Lisa, Ali Behrangi, Huffman George, Seiji Kato, Pierre-Emmanuel Kirstetter, Takuji Kubota, Chris Kummerow, L'Ecuyer Tristan, Vincenzo Levizzani (+7 others)
2021
Sana Khan for her contribution to this assessment and a better depiction of the status of satellite precipitation error modeling.  ...  Hakuba, Graeme Stephens and the GDAP panel members.  ...  NS, or Ku-band only) and a Matched Scan (MS, or Ku+Ka-band) variant, for a total of four reported instantaneous estimates.  ... 
doi:10.13021/gewex.precip fatcat:ktr4djdzurg4ristnbbonkdi3y