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Title: High - frequency vertical profiling of meteorological parameters using AMF1 facility during RAWEX – GVAX at ARIES, Nainital
Authors: Naja, M
Bhardwaj, P
Singh, N
Phani Kumar
Rajesh Kumar
Ojha, N
Sagar, R
Satheesh, S. K
Krishna Moorthy, K
Kotamarthi, V. R
Keywords: Aerosols;Radiosonde;Subtropical jet;Tropo-pause folding;Vertical profiling
Issue Date: 10-Jul-2016
Publisher: Current Science Association
Citation: Current Science, Vol. 111, No. 1, pp. 132 - 140
Abstract: An extensive field study, RAWEX–GVAX, was carried out during a 10-month (June 2011–March 2012) campaign at ARIES, Nainital and observations on a wide range of parameters like physical and optical proper-ties of aerosols, meteorological parameters and boundary layer evolution were made. This work presents results obtained from high-frequency (four launches per day), balloon-borne observations of meteorological parameters (pressure, temperature, relative humidity, wind speed and wind direction). These observations show wind speed as high as 84 m/s near the subtropical jet. It is shown that reanalysis wind speeds are in better agreement at 250 hPa (altitude of subtropical jet) than those above or below this value (100 hPa or 500 hPa). These observations also demonstrate that AIRS- derived temperature profiles are negatively biased in the lower altitude region, whereas they are positively biased near the tropopause. WRF simulated results are able to capture variations in temperature, humidity and wind speed profile reasonable well. WRF and AIRS-derived tropopause height, tropopause pressure and tropopause temperature also show agreement with radiosonde estimates.
ISSN: 0011-3891
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Appears in Collections:IIAP Publications

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