Kishore, PVenkat Ratnam, MNamboothiri, SPVelicogna, IBasha, GJiang, JHIgarashi, KRao, SVBSivakumar, V2011-09-232011-09-232011-08Kishore, P, Venkat Ratnam, M, Namboothiri, SP et al. 2011. Global (50°S–50°N) distribution of water vapor observed by COSMIC GPS RO: Comparison with GPS radiosonde, NCEP, ERA-Interim, and JRA-25 reanalysis data sets. Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 73, pp 1849–18601364-6826http://www.sciencedirect.com/science?_ob=MiamiImageURL&_cid=271871&_user=958262&_pii=S1364682611001283&_check=y&_origin=&_coverDate=31-Aug-2011&view=c&wchp=dGLzVlk-zSkzk&md5=1b0bd1fa538de24fc8249c9fcfc578b1/1-s2.0-S1364682611001283-main.pdfhttp://hdl.handle.net/10204/5166Copyright: Elsevier 2011. This is a post print version of the work. The definitive version is published the Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 73, pp 1849–1860In this study, global (50°S–50°N) distribution of water vapor is investigated using COSMIC GPS RO measurements. Detailed comparisons have been made between COSMIC and high resolution GPS radiosonde measurements across 13 tropical stations and model outputs (ERA-Interim, NCEP, and JRA-25 reanalyses data sets). In comparison with independent techniques like radiosonde (Väisälä), it is found that COSMIC GPS RO wet profiles are accurate up to 7–8 km (assuming radiosonde as standard technique). In general, comparisons with corresponding seasonal means of model outputs are qualitatively in good agreement, although they differ quantitatively especially over convective regions of South America, Africa, and Indonesia. In tropical latitudes, the COSMIC specific humidity values are higher than the model outputs. Among various model outputs, ERA-Interim data set show near realistic features to that observed by COSMIC GPS RO measurements. Large asymmetry in the specific humidity distribution is observed between northern and southern hemispheres.enWater vaporRadiosondeGPS ROAtmosphereSolar terrestrial physicsCOSMIC GPS ROArticleKishore, P., Venkat Ratnam, M., Namboothiri, S., Velicogna, I., Basha, G., Jiang, J., ... Sivakumar, V. (2011). Global (50°S–50°N) distribution of water vapor observed by COSMIC GPS RO: Comparison with GPS radiosonde, NCEP, ERA-Interim, and JRA-25 reanalysis data sets. http://hdl.handle.net/10204/5166Kishore, P, M Venkat Ratnam, SP Namboothiri, I Velicogna, G Basha, JH Jiang, K Igarashi, SVB Rao, and V Sivakumar "Global (50°S–50°N) distribution of water vapor observed by COSMIC GPS RO: Comparison with GPS radiosonde, NCEP, ERA-Interim, and JRA-25 reanalysis data sets." (2011) http://hdl.handle.net/10204/5166Kishore P, Venkat Ratnam M, Namboothiri S, Velicogna I, Basha G, Jiang J, et al. Global (50°S–50°N) distribution of water vapor observed by COSMIC GPS RO: Comparison with GPS radiosonde, NCEP, ERA-Interim, and JRA-25 reanalysis data sets. 2011; http://hdl.handle.net/10204/5166.TY - Article AU - Kishore, P AU - Venkat Ratnam, M AU - Namboothiri, SP AU - Velicogna, I AU - Basha, G AU - Jiang, JH AU - Igarashi, K AU - Rao, SVB AU - Sivakumar, V AB - In this study, global (50°S–50°N) distribution of water vapor is investigated using COSMIC GPS RO measurements. Detailed comparisons have been made between COSMIC and high resolution GPS radiosonde measurements across 13 tropical stations and model outputs (ERA-Interim, NCEP, and JRA-25 reanalyses data sets). In comparison with independent techniques like radiosonde (Väisälä), it is found that COSMIC GPS RO wet profiles are accurate up to 7–8 km (assuming radiosonde as standard technique). In general, comparisons with corresponding seasonal means of model outputs are qualitatively in good agreement, although they differ quantitatively especially over convective regions of South America, Africa, and Indonesia. In tropical latitudes, the COSMIC specific humidity values are higher than the model outputs. Among various model outputs, ERA-Interim data set show near realistic features to that observed by COSMIC GPS RO measurements. Large asymmetry in the specific humidity distribution is observed between northern and southern hemispheres. DA - 2011-08 DB - ResearchSpace DP - CSIR KW - Water vapor KW - Radiosonde KW - GPS RO KW - Atmosphere KW - Solar terrestrial physics KW - COSMIC GPS RO LK - https://researchspace.csir.co.za PY - 2011 SM - 1364-6826 T1 - Global (50°S–50°N) distribution of water vapor observed by COSMIC GPS RO: Comparison with GPS radiosonde, NCEP, ERA-Interim, and JRA-25 reanalysis data sets TI - Global (50°S–50°N) distribution of water vapor observed by COSMIC GPS RO: Comparison with GPS radiosonde, NCEP, ERA-Interim, and JRA-25 reanalysis data sets UR - http://hdl.handle.net/10204/5166 ER -