The ozonesonde intercomparison experiment at Thumba

Acharya, Y. B.; Banerjee, Sudipto; Jayaraman, A.; Subbaraya, B. H.; Appu, K. S.; Narayanan, V.; Chatterjee, Kalipada; Sreedharan, C. R.; Grinchinko, V.D.; Khokin, G.A.; Kononkov, V. A.; Moshnikov, I. S.; Perov, S. P.; Chizhov, A. F.; Shtrikov, O. V.; Zalpuri, K. S.; Garg, S. C.; Subramanyam, P.; Somayajulu, Y. V.; Ramanamurthy, B V; Selvam, A. M.; Sikka, P.; Vijaykumar, R

doi:10.1016/0273-1177(84)90430-7

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…The quality of Indian ozonesonde data have been assessed through several Inter-comparison campaigns [4][5][6][7][8][9] and found reasonably reliable. The fundamental difference between the sonde types is a function of the type of anode sonde used.…”

Section: Ballonborne Ozonesondementioning

confidence: 99%

“…Contributions to this report included improvements in quality control on the long term ozonesonde records from several sites and JOISE comparisons of ozonesondes under controlled laboratory conditions [3] Among several methods, balloonborne ozonesondes have long term record of measurements at few stations over the globe, though different types of ozonesondes have been used at different parts. A relatively large number of intercomparisons between different methods and instruments of measuring vertical ozone distribution has already been carried out during the past years [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Study on Comparison of Indian Ozonesonde Data with Satellite Data

Rohtash

Mandal

Peshin

et al. 2016

MAPAN

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This paper assesses the quality of ozone data of modified Brewer Mast (MBM) balloonborne ozonesonde and its comparison with MOZAIC Data (version 4), TES data (version 6), UARS MLS (version 5), EOS Aura MLS Data (version 5) and SBUV (version 8.1). The stations that have been used for this analysis: Delhi (28.58N, 77.20E) (Ozonesonde, MOZAIC, TES, UARS MLS, AURA MLS and SBUV), Pune (18.53N, 73.85E) Ozonesonde, UARS MLS, AURA MLS, SBUV and MOZAIC over Bombay presently called Mumbai (20.19N, 72.34E)), Madras presently called Chennai (13N, 80.18E) (MOZAIC and MLS) and Trivandrum (8.48N, 76.95E) (Ozonesonde, UARS MLS, AURA MLS and SBUV).Analysis shows that reasonable amounts of ozonesonde data are of good quality according to WMO criteria (1982) as 70-80 % of data over all the three stations are within the normalization factor of 1.3-0.8 ± (0.05-0.1) although some major changes in instrumentation e.g., new fast running nonreactive Teflon pump, modernized electronics, and smaller case since 1971. Several international intercomparisons carried out in 1970, 1982, 1991 and 1996 respectively, has also been confirmed the same, in spite of fundamental differences among the methods of these intercomparisons as well as ozonesonde types on procedure for sonde preparation, data processing and analysis. The intercomparison of Indian ozonesonde data (1995)(1996)(1997)(1998)(1999) is made at troposphere with MOZAIC data (1995)(1996)(1997)(1998)(1999)(2000) over Delhi and Pune/Mumbai, ozonesonde data (2013-2014) also compare with TES (2013-2014) special observation data over particular station Delhi at troposphere and at stratosphere with UARS MLS (1995)(1996)(1997)(1998)(1999), EOS Aura MLS (2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014) and SBUV (2005SBUV ( -2013 data at Delhi, Pune and Trivandrum. Tropospheric value of Ozonesonde shows on average 10-20 % higher value than MOZAIC value over Delhi and Pune except in the lower height (\800 hPa) but ozonesonde show 10-15 % higher value than TES over Delhi in the lower height (\800 hPa). The percentage difference between ozonesonde data and UARS MLS data at Delhi, Pune and Trivandrum show variation of ±15 % and ozonesonde data, EOS Aura MLS and SBUV data at Delhi, Pune and Trivandrum show variation of ±45 % in the vertical range of 46 to 10 hPa, where, MLS data show highest accuracy.

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Section: Ballonborne Ozonesondementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Comparison of Indian Ozonesonde Data with Satellite Data

Rohtash

Mandal

Peshin

et al. 2016

MAPAN

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“…During recent ozone intercomparison experiments at Trivandrum in March 83 (Acharya et al, 1984), a USSR rocketborne chemical sensor noted a bulge in the ozone profile at about 5 km altitude, when a thunderstorm was in progress in the neighbourhood. This study was undertaken to examine how often such abnormal profile shapes are observed at these latitudes and if they could be linked with some meteorological parameters.…”

Section: Introductionmentioning

confidence: 99%

Tropospheric ozone profiles near equator and meteorological parameters

Kundu

Saha

1987

J Atmos Chem

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This is a study of ozone profile shapes in the 800 to 100 millibar range obtained with balloonsonde data over Trivandrum (8.5"N) during 1975-76 and possible associations of these shapes to some meteorological parameters.Whereas monotonic ozone profiles were noted with clear weather conditions, those associated with cloud cover show three basic anomalous features. Some bulges of increased values are observed in the range of 800 to 500 mb. In the 500-100 mb range, short range or localized cloud cover or passing weather disturbances are associated with fluctuation patterns in the ozone profile and an average depleted value of ozone. The fluctuations are also associated with changing wind speed and direction at these heights.Possible causative mechanisms are discussed. Lightning associated with thunderstorm, producing additional CO and NO are sought to interpret the bulges at lower heights. The decrease in values as well as the fluctuation patterns are suggested as due to possible incursion of water vapour from troposphere to stratosphere in the tropical region and dynamical effects associated with it.

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