Improving Millimeter Radar Attenuation Corrections in High Latitude Mixed Phase Clouds via Radio-Soundings and a Suite of Active and Passive Instruments
Supercooled liquid clouds are very frequent in high-latitude regions. In addition to their substantial effect to visible and infrared radiation, they affect the signal of millimeter radars by producing non-negligible attenuation. Such attenuation must be properly corrected if the information of mill...
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Online Access: | http://hdl.handle.net/11583/2959264 https://doi.org/10.1109/TGRS.2022.3142533 |
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ftpoltorinoiris:oai:iris.polito.it:11583/2959264 2024-02-11T10:06:57+01:00 Improving Millimeter Radar Attenuation Corrections in High Latitude Mixed Phase Clouds via Radio-Soundings and a Suite of Active and Passive Instruments Kalogeras P. Battaglia A. Kalogeras, P. Battaglia, A. 2022 http://hdl.handle.net/11583/2959264 https://doi.org/10.1109/TGRS.2022.3142533 eng eng Institute of Electrical and Electronics Engineers Inc. info:eu-repo/semantics/altIdentifier/wos/WOS:000767865000006 volume:60 firstpage:1 lastpage:11 numberofpages:11 journal:IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING http://hdl.handle.net/11583/2959264 doi:10.1109/TGRS.2022.3142533 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85122882491 info:eu-repo/semantics/openAccess Attenuation Cloud Ice Laser radar Liquid Microwave radiometry Radar info:eu-repo/semantics/article 2022 ftpoltorinoiris https://doi.org/10.1109/TGRS.2022.3142533 2024-01-23T23:20:26Z Supercooled liquid clouds are very frequent in high-latitude regions. In addition to their substantial effect to visible and infrared radiation, they affect the signal of millimeter radars by producing non-negligible attenuation. Such attenuation must be properly corrected if the information of millimeter radars is used in quantitative retrievals for inferring ice microphysical properties. This study proposes a multi-sensor scheme for refining the vertical distribution of supercooled liquid water content (SLWC) compared to state-of-the-art methods that equipartition the liquid water path measured by microwave radiometer to all pixels identified as cloudy by the radars and warmer than -40°C. Our methodology is applicable in high-latitude, mixed-phase environments, based on the synergy between radar and lidar binary cloud phase masking, microwave radiometer, and radio sounding observations. The technique is demonstrated via data collected by the U.S. DoE Atmospheric Radiation Measurement (ARM) Program climate research facility at the North Slope of Alaska (NSA) and compared with the state-of-the-art methods. Path integrated attenuation (PIA) at W- and G-Band frequencies (> 95 GHz) is then assessed. Results indicate that the different in-cloud distributions of the liquid condensate lead to round-trip PIA discrepancies of cloudy volumes that range in [2, 5] dB, at W- and G-Band frequencies. These differences far exceed those encountered when changing some of the algorithm’s arbitrary assumptions and weighting functions. Article in Journal/Newspaper north slope Alaska PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino) Hydrological Processes 36 1 |
institution |
Open Polar |
collection |
PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino) |
op_collection_id |
ftpoltorinoiris |
language |
English |
topic |
Attenuation Cloud Ice Laser radar Liquid Microwave radiometry Radar |
spellingShingle |
Attenuation Cloud Ice Laser radar Liquid Microwave radiometry Radar Kalogeras P. Battaglia A. Improving Millimeter Radar Attenuation Corrections in High Latitude Mixed Phase Clouds via Radio-Soundings and a Suite of Active and Passive Instruments |
topic_facet |
Attenuation Cloud Ice Laser radar Liquid Microwave radiometry Radar |
description |
Supercooled liquid clouds are very frequent in high-latitude regions. In addition to their substantial effect to visible and infrared radiation, they affect the signal of millimeter radars by producing non-negligible attenuation. Such attenuation must be properly corrected if the information of millimeter radars is used in quantitative retrievals for inferring ice microphysical properties. This study proposes a multi-sensor scheme for refining the vertical distribution of supercooled liquid water content (SLWC) compared to state-of-the-art methods that equipartition the liquid water path measured by microwave radiometer to all pixels identified as cloudy by the radars and warmer than -40°C. Our methodology is applicable in high-latitude, mixed-phase environments, based on the synergy between radar and lidar binary cloud phase masking, microwave radiometer, and radio sounding observations. The technique is demonstrated via data collected by the U.S. DoE Atmospheric Radiation Measurement (ARM) Program climate research facility at the North Slope of Alaska (NSA) and compared with the state-of-the-art methods. Path integrated attenuation (PIA) at W- and G-Band frequencies (> 95 GHz) is then assessed. Results indicate that the different in-cloud distributions of the liquid condensate lead to round-trip PIA discrepancies of cloudy volumes that range in [2, 5] dB, at W- and G-Band frequencies. These differences far exceed those encountered when changing some of the algorithm’s arbitrary assumptions and weighting functions. |
author2 |
Kalogeras, P. Battaglia, A. |
format |
Article in Journal/Newspaper |
author |
Kalogeras P. Battaglia A. |
author_facet |
Kalogeras P. Battaglia A. |
author_sort |
Kalogeras P. |
title |
Improving Millimeter Radar Attenuation Corrections in High Latitude Mixed Phase Clouds via Radio-Soundings and a Suite of Active and Passive Instruments |
title_short |
Improving Millimeter Radar Attenuation Corrections in High Latitude Mixed Phase Clouds via Radio-Soundings and a Suite of Active and Passive Instruments |
title_full |
Improving Millimeter Radar Attenuation Corrections in High Latitude Mixed Phase Clouds via Radio-Soundings and a Suite of Active and Passive Instruments |
title_fullStr |
Improving Millimeter Radar Attenuation Corrections in High Latitude Mixed Phase Clouds via Radio-Soundings and a Suite of Active and Passive Instruments |
title_full_unstemmed |
Improving Millimeter Radar Attenuation Corrections in High Latitude Mixed Phase Clouds via Radio-Soundings and a Suite of Active and Passive Instruments |
title_sort |
improving millimeter radar attenuation corrections in high latitude mixed phase clouds via radio-soundings and a suite of active and passive instruments |
publisher |
Institute of Electrical and Electronics Engineers Inc. |
publishDate |
2022 |
url |
http://hdl.handle.net/11583/2959264 https://doi.org/10.1109/TGRS.2022.3142533 |
genre |
north slope Alaska |
genre_facet |
north slope Alaska |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000767865000006 volume:60 firstpage:1 lastpage:11 numberofpages:11 journal:IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING http://hdl.handle.net/11583/2959264 doi:10.1109/TGRS.2022.3142533 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85122882491 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1109/TGRS.2022.3142533 |
container_title |
Hydrological Processes |
container_volume |
36 |
container_issue |
1 |
_version_ |
1790604991399985152 |