Determination of ice water content (IWC) in tropical convective clouds from X-band dual-polarization airborne radar
<p>This paper presents a methodology for ice water content (IWC) retrieval from a dual-polarization side-looking X-band airborne radar. Measured IWC from aircraft in situ probes is weighted by a function of the radar differential reflectivity (<span class="inline-formula"><i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2019-11-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://www.atmos-meas-tech.net/12/5897/2019/amt-12-5897-2019.pdf |
| _version_ | 1828884254917918720 |
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| author | C. M. Nguyen M. Wolde A. Korolev |
| author_facet | C. M. Nguyen M. Wolde A. Korolev |
| author_sort | C. M. Nguyen |
| collection | DOAJ |
| description | <p>This paper presents a methodology for ice water content
(IWC) retrieval from a dual-polarization side-looking X-band airborne radar.
Measured IWC from aircraft in situ probes is weighted by a function of the
radar differential reflectivity (<span class="inline-formula"><i>Z</i><sub>dr</sub></span>) to reduce the effects of ice
crystal shape and orientation on the variation in IWC – specific
differential phase (<span class="inline-formula"><i>K</i><sub>dp</sub></span>) joint distribution. A theoretical study
indicates that the proposed method, which does not require a knowledge of
the particle size distribution (PSD) and number density of ice crystals, is
suitable for high-ice-water-content (HIWC) regions in tropical convective
clouds. Using datasets collected during the High Altitude Ice Crystals –
High Ice Water Content (HAIC-HIWC) international field campaign in Cayenne,
French Guiana (2015), it is shown that the proposed method improves the
estimation bias by 35 % and increases the correlation by 4 % on
average, compared to the method using specific differential phase (<span class="inline-formula"><i>K</i><sub>dp</sub></span>)
alone.</p> |
| first_indexed | 2024-12-13T11:03:57Z |
| format | Article |
| id | doaj.art-f1ff437d906a46b38926f977c697cacd |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-13T11:03:57Z |
| publishDate | 2019-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-f1ff437d906a46b38926f977c697cacd2022-12-21T23:49:09ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482019-11-01125897591110.5194/amt-12-5897-2019Determination of ice water content (IWC) in tropical convective clouds from X-band dual-polarization airborne radarC. M. Nguyen0M. Wolde1A. Korolev2Flight Research Laboratory, National Research Council Canada, Ottawa, K1A 0R6, CanadaFlight Research Laboratory, National Research Council Canada, Ottawa, K1A 0R6, CanadaEnvironment and Climate Change Canada, Toronto, J8X 4C6, Canada<p>This paper presents a methodology for ice water content (IWC) retrieval from a dual-polarization side-looking X-band airborne radar. Measured IWC from aircraft in situ probes is weighted by a function of the radar differential reflectivity (<span class="inline-formula"><i>Z</i><sub>dr</sub></span>) to reduce the effects of ice crystal shape and orientation on the variation in IWC – specific differential phase (<span class="inline-formula"><i>K</i><sub>dp</sub></span>) joint distribution. A theoretical study indicates that the proposed method, which does not require a knowledge of the particle size distribution (PSD) and number density of ice crystals, is suitable for high-ice-water-content (HIWC) regions in tropical convective clouds. Using datasets collected during the High Altitude Ice Crystals – High Ice Water Content (HAIC-HIWC) international field campaign in Cayenne, French Guiana (2015), it is shown that the proposed method improves the estimation bias by 35 % and increases the correlation by 4 % on average, compared to the method using specific differential phase (<span class="inline-formula"><i>K</i><sub>dp</sub></span>) alone.</p>https://www.atmos-meas-tech.net/12/5897/2019/amt-12-5897-2019.pdf |
| spellingShingle | C. M. Nguyen M. Wolde A. Korolev Determination of ice water content (IWC) in tropical convective clouds from X-band dual-polarization airborne radar Atmospheric Measurement Techniques |
| title | Determination of ice water content (IWC) in tropical convective clouds from X-band dual-polarization airborne radar |
| title_full | Determination of ice water content (IWC) in tropical convective clouds from X-band dual-polarization airborne radar |
| title_fullStr | Determination of ice water content (IWC) in tropical convective clouds from X-band dual-polarization airborne radar |
| title_full_unstemmed | Determination of ice water content (IWC) in tropical convective clouds from X-band dual-polarization airborne radar |
| title_short | Determination of ice water content (IWC) in tropical convective clouds from X-band dual-polarization airborne radar |
| title_sort | determination of ice water content iwc in tropical convective clouds from x band dual polarization airborne radar |
| url | https://www.atmos-meas-tech.net/12/5897/2019/amt-12-5897-2019.pdf |
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