The MSU was first launched aboard the TIROS-N satellite in late 1978 and provided global coverage (from Pole to Pole). It carries a 4-channel microwave radiometer, operating between 50 and 60 GHz. Spatial resolution on the ground was 2.5 deg in longitude and latitude (about 250 km circle). There were 9 different MSUs launched; the most recent one on NOAA-14. They provided measurements of the temperature of the troposphere and lower stratosphere until 1998, when the first AMSU was deployed. AMSU provides many more channels and finer resolution (about 50 km).
Table 1 lists some characteristics of the MSU. [1][2] The radiometer's antenna scans underneath the satellite through nadir, and its polarization vector rotates with the scan angle.[2] In the table, "vertical polarization near nadir" means that the E-vector is parallel to the scan direction at nadir, and "horizontal polarization" means the orthogonal direction.
Table 1 Radiometric characteristics of the Microwave Sounding Unit
The MSU was used by NOAA for meteorological analyses in combination with two infrared instruments, [3] and sometimes alone, for post-analysis of weather events [4] and other atmospheric phenomena such as waves. [5][6] MSU and AMSU together provide a long data record and have been used for tracking atmospheric temperature trends (see: Microwave Sounding Unit temperature measurements).
References
^Mo, Tsan (1995), "A study of the Microwave Sounding Unit on the NOAA-12 satellite", IEEE Transactions on Geoscience and Remote Sensing, 33 (5): 1141–52, doi:10.1109/36.469478
^ abKleespies, Thomas J.; et al. (2007), "Evaluation of scan asymmetry in the NOAA-14 Microwave Sounding Unit by a pitch maneuver", IEEE Geoscience and Remote Sensing Letters, 4 (4): 621–3, doi:10.1109/LGRS.2007.903394
^Smith, W. L.; Woolf, H. M.; Hayden, C. M.; Wark, D. Q.; McMillin, L. M. (1979), "The Tiros-N Operational Vertical Sounder", Bulletin of the American Meteorological Society, 60 (10): 1177–87, doi:10.1175/1520-0477-60.10.1177
^Grody, Norman C. (1983), "Severe storm observations using the Microwave Sounding Unit", Journal of Climate and Applied Meteorology, 22 (4): 609–25, doi:10.1175/1520-0450(1983)022<0609:SSOUTM>2.0.CO;2
^Stanford, John L.; Short, David A. (1981), "Evidence for wavelike anomalies with short meridional and large zonal scales in the lower stratospheric temperature field", Journal of the Atmospheric Sciences, 38: 1083–91, doi:10.1175/1520-0469(1981)038<1083:EFWAWS>2.0.CO;2
^Martin, Russell L.; Stanford, John L. (1986), "Zonal wave number variance spectra of stratospheric microwave brightness temperatures", Journal of Geophysical Research, 91 (D12): 13, 195–200, doi:10.1029/JD091iD12p13195
microwave, sounding, unit, microwave, sounding, unit, predecessor, advanced, microwave, sounding, unit, amsu, first, launched, aboard, tiros, satellite, late, 1978, provided, global, coverage, from, pole, pole, carries, channel, microwave, radiometer, operatin. The microwave sounding unit MSU was the predecessor to the Advanced Microwave Sounding Unit AMSU The MSU was first launched aboard the TIROS N satellite in late 1978 and provided global coverage from Pole to Pole It carries a 4 channel microwave radiometer operating between 50 and 60 GHz Spatial resolution on the ground was 2 5 deg in longitude and latitude about 250 km circle There were 9 different MSUs launched the most recent one on NOAA 14 They provided measurements of the temperature of the troposphere and lower stratosphere until 1998 when the first AMSU was deployed AMSU provides many more channels and finer resolution about 50 km Table 1 lists some characteristics of the MSU 1 2 The radiometer s antenna scans underneath the satellite through nadir and its polarization vector rotates with the scan angle 2 In the table vertical polarization near nadir means that the E vector is parallel to the scan direction at nadir and horizontal polarization means the orthogonal direction Table 1 Radiometric characteristics of the Microwave Sounding Unit Channel Number Frequency GHz Polarization near nadir Radiometric Resolution NEDT K Primary Function1 50 30 vertical 0 3 Surface Emissivity Precipitation2 53 74 horizontal 0 3 Mid troposphere Temperature3 54 96 vertical 0 3 Temperature Near Tropopause4 57 95 horizontal 0 3 Lower stratosphere TemperatureApplications EditThe MSU was used by NOAA for meteorological analyses in combination with two infrared instruments 3 and sometimes alone for post analysis of weather events 4 and other atmospheric phenomena such as waves 5 6 MSU and AMSU together provide a long data record and have been used for tracking atmospheric temperature trends see Microwave Sounding Unit temperature measurements References Edit Mo Tsan 1995 A study of the Microwave Sounding Unit on the NOAA 12 satellite IEEE Transactions on Geoscience and Remote Sensing 33 5 1141 52 doi 10 1109 36 469478 a b Kleespies Thomas J et al 2007 Evaluation of scan asymmetry in the NOAA 14 Microwave Sounding Unit by a pitch maneuver IEEE Geoscience and Remote Sensing Letters 4 4 621 3 doi 10 1109 LGRS 2007 903394 Smith W L Woolf H M Hayden C M Wark D Q McMillin L M 1979 The Tiros N Operational Vertical Sounder Bulletin of the American Meteorological Society 60 10 1177 87 doi 10 1175 1520 0477 60 10 1177 Grody Norman C 1983 Severe storm observations using the Microwave Sounding Unit Journal of Climate and Applied Meteorology 22 4 609 25 doi 10 1175 1520 0450 1983 022 lt 0609 SSOUTM gt 2 0 CO 2 Stanford John L Short David A 1981 Evidence for wavelike anomalies with short meridional and large zonal scales in the lower stratospheric temperature field Journal of the Atmospheric Sciences 38 1083 91 doi 10 1175 1520 0469 1981 038 lt 1083 EFWAWS gt 2 0 CO 2 Martin Russell L Stanford John L 1986 Zonal wave number variance spectra of stratospheric microwave brightness temperatures Journal of Geophysical Research 91 D12 13 195 200 doi 10 1029 JD091iD12p13195See also EditMSU temperature measurements Satellite temperature measurements This climatology meteorology related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Microwave sounding unit amp oldid 1130094071, wikipedia, wiki, book, books, library,
