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Effects of Melting Layer in Airborne Meteorological X-Band Radar Observations.

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Title: Effects of Melting Layer in Airborne Meteorological X-Band Radar Observations.
Authors: Pujol, O.1, Mesnard, F.2, Sauvageot, H.2
Source: IEEE Transactions on Geoscience & Remote Sensing. Jun2012, Vol. 50 Issue 6, p2318-2324. 7p.
Subjects: Melting, Hydrometeorology, Snowflakes, Radar antennas, Airplane radar equipment
Abstract: Most civil aviation aircraft are equipped with meteorological radar working at the X-band (f ≈ 10 GHz; λ ≈ 3.2 cm) . These radars use a small antenna and, thus, a large beamwidth, around 3°-4°, for observations over long distances (up to 350 km). In the presence of microphysical inhomogeneities inside a radar sampling volume, as filling by different hydrometeor categories, radar reflectivity measurements are biased. An important bias occurs when a radar cell is cut by a nonresolved layer of melting snowflakes whose attenuation is high compared to those of rain and dry snow. This paper illustrates the effects in precipitation-attenuation correction schemes (PACS) of the inhomogeneity associated with the 0 °C isotherm. It proposes a method to take into account these effects in PACS. Adaptation of the method to other frequency bands and ground-based radar observations is easy. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 101186175
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Effects of Melting Layer in Airborne Meteorological X-Band Radar Observations.
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  Data: <searchLink fieldCode="AR" term="%22Pujol%2C+O%2E%22">Pujol, O.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Mesnard%2C+F%2E%22">Mesnard, F.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Sauvageot%2C+H%2E%22">Sauvageot, H.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Geoscience+%26+Remote+Sensing%22">IEEE Transactions on Geoscience & Remote Sensing</searchLink>. Jun2012, Vol. 50 Issue 6, p2318-2324. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Melting%22">Melting</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrometeorology%22">Hydrometeorology</searchLink><br /><searchLink fieldCode="DE" term="%22Snowflakes%22">Snowflakes</searchLink><br /><searchLink fieldCode="DE" term="%22Radar+antennas%22">Radar antennas</searchLink><br /><searchLink fieldCode="DE" term="%22Airplane+radar+equipment%22">Airplane radar equipment</searchLink>
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  Data: Most civil aviation aircraft are equipped with meteorological radar working at the X-band (f ≈ 10 GHz; λ ≈ 3.2 cm) . These radars use a small antenna and, thus, a large beamwidth, around 3°-4°, for observations over long distances (up to 350 km). In the presence of microphysical inhomogeneities inside a radar sampling volume, as filling by different hydrometeor categories, radar reflectivity measurements are biased. An important bias occurs when a radar cell is cut by a nonresolved layer of melting snowflakes whose attenuation is high compared to those of rain and dry snow. This paper illustrates the effects in precipitation-attenuation correction schemes (PACS) of the inhomogeneity associated with the 0 °C isotherm. It proposes a method to take into account these effects in PACS. Adaptation of the method to other frequency bands and ground-based radar observations is easy. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IEEE Transactions on Geoscience & Remote Sensing is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1109/TGRS.2011.2172111
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 7
        StartPage: 2318
    Subjects:
      – SubjectFull: Melting
        Type: general
      – SubjectFull: Hydrometeorology
        Type: general
      – SubjectFull: Snowflakes
        Type: general
      – SubjectFull: Radar antennas
        Type: general
      – SubjectFull: Airplane radar equipment
        Type: general
    Titles:
      – TitleFull: Effects of Melting Layer in Airborne Meteorological X-Band Radar Observations.
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            NameFull: Pujol, O.
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            NameFull: Mesnard, F.
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              M: 06
              Text: Jun2012
              Type: published
              Y: 2012
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