Articles | Volume 15, issue 8
Development and technical paper
22 Apr 2022
Development and technical paper |  | 22 Apr 2022

On the impact of dropsondes on the ECMWF Integrated Forecasting System model (CY47R1) analysis of convection during the OTREC (Organization of Tropical East Pacific Convection) field campaign

Stipo Sentić, Peter Bechtold, Željka Fuchs-Stone, Mark Rodwell, and David J. Raymond

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Cited articles

Agustí-Panareda, A., Beljaars, A., Cardinali, C., Genkova, I., and Thorncroft, C.: Impacts of Assimilating AMMA Soundings on ECMWF Analyses and Forecasts, Weather Forecast., 25, 1142–1160, 2010. a
Bechtold, P., Bauer, P., Berrisford, P., Bidlot, J.-R., Cardinali, C., Haiden, T., Janousek, M., Klocke, D., Magnusson, L., McNally, A., Prates, F., Rodwell, M., Semane, N., and Vitart, F.: Progress in predicting tropical systems: The role of convection, ECMWF, 61,, 2012. a, b, c
Bechtold, P., Semane, N., Lopez, P., Chaboureau, J., Beljaars, A., and Bormann, N.: Representing Equilibrium and Nonequilibrium Convection in Large-Scale Models, J. Atmos. Sci., 71, 734–753, 2014. a
Chan, P., Wu, N., Zhang, C., Deng, W., and Hon, K.: The first complete dropsonde observation of a tropical cyclone over the South China Sea by the Hong Kong Observatory, Weather, 73, 227–234,, 2018. a
Chelton, D. B., Freilich, M. H., and Esbensen, S. K.: Satellite Observations of the Wind Jets off the Pacific Coast of Central America. Part I: Case Studies and Statistical Characteristics, Mon. Weather Rev., 128, 1993–2018,<1993:SOOTWJ>2.0.CO;2, 2000a. a
Short summary
The Organization of Tropical East Pacific Convection (OTREC) field campaign focuses on studying convection in the eastern Pacific and Caribbean. Observations obtained from dropsondes have been assimilated into the ECMWF model and compared to a model run in which sondes have not been assimilated. The model performs well in both simulations, but the assimilation of sondes helps to reduce the departure for pre-tropical-storm conditions. Variables important to studying convection are also studied.