Summary
This study entails a reanalysis of the TOGA-COARE, CEPEX period covering the months December 1992 through March 1993. Four times daily data sets were reanalyzed for the period. The unique aspect of this reanalysis is that (i) it incorporates physical initialization i.e. assimilation of rainfall from raingauge and satellite (OLR and microwave radiometric data), (ii) this reanalysis is carried out at a very high resolution, T170, global spectral model (space resolution of roughly 70 km at equator) and (iii) ECMWF reanalysis is used as a first guess field for this study.
This analysis is global and is carried out at 15 vertical levels using the FSU global spectral model. In this study we have analyzed a large number of meterological variables such as wind, temperature, humidity, surface pressure, vertical velocity, cloud, rainfall, surface fluxes and diabatic heating. In this part of the paper we present the monthly mean and samples of daily fields of the reanalysis. Some of the major results of the reanalysis include the relationships among the flow fields and the ITCZ convection; the shallow northeast monsoon current and its rapid turning towards westerlies with height; an overabundance of middle clouds over the region of the ITCZ; and the distribution of heat sources and sinks. A motivation for this reanalysis is the forthcoming Indian Ocean Experiment (INDOEX), which is an international field experiment to be conducted during the winter monsoon time frame in 1999.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Gairola, R. K., Krishnamurti, T. N., 1992: Rain rates based on SSM/I, OLR and raingauge data sets.J. Meteorol. Atmos. Phys.,50, 165–174.
Kitade, T., 1983: Nonlinear normal mode initialization with physics.Mon. Wea. Rev.,111, 2194–2213.
Krishnamurti, T. N., Jha, B. J., Rasch, P. J., Ramanathan, V., 1997: A high resolution global reanalysis highlighting the winter monsoon.Meteorol. Atmos. Phys. (in press).
Krishnamurti, T. N., Xue, J., Bedi, H. S., Ingles, K., Oosterhof, D., 1991: Physical initialization for numerical weather prediction over the tropics.Tellus,43AB, 53–81.
Krishnamurti, T. N., Kumar, A., Yap, K. S., Dastoors, A. P., Davidson, N., Sheng, J., 1990: Pertormance of a high resolution measoscale tropical prediction model.Advances in Geophysics,32, 133–281.
Ramanathan, V., Crutzen, P. J., Coakley, J., Clarke, A., Collins, W. D., Dickerson, R., Fahey, D., Gardoud, B., Heymensfield, A., Kiehl, J. T., Kuettner, J., Krishnamurti, T. N., Lubin, D., Maring, H., Ogren J., Prospero, J., Rasch, P. J., Savoie, D., Shaw, G., Tuck, A., Valero, F. P. J., Woodbridge, E. L., Zhang, G., 1996. Indian Ocean Experiment (INDOEX), A multi-agency tropical for a field experiment in the Indian Ocean, C4, Scripps Institution of Oceanography, UCSB, La Jolla, California 92093-0239, USA.
Ramanathan, V., Crutzen, P. J., Coakley, J., Dickerson, R., Heymsfield, A., Kiehl, J., Kley, D., Krishnamurti, T. N., Kuettner J., Lelieveld, J., Mitra, A. P., Prospero, J., Sadourny, R., Valero, F. P. J., Woodbridge, E. L., 1995: Indian Ocean Experiment (INDOEX) White Paper, C4, Scripps Institution of Oceanography, UCSD, La Jolla, California 92093-0239, USA.
Warren, S. G., Hahn, C. J., London, J., Chervin, R. M., Jenne, R. L., 1988: Global distribution of total cloud cover and cloud type amounts over the ocean. DOE/ER-0406, NCAR/TW-317+STR.
Webster, P. J., Stephens, G. L., 1980: Tropical upper-tropospheric extended clouds: inferences from Winter MONEX.J. Atmos. Sci.,37, 1521–1541.
Author information
Authors and Affiliations
Additional information
With 25 Figures
Rights and permissions
About this article
Cite this article
Krishnamurti, T.N., Jha, B., Rasch, P.J. et al. A high resolution global reanalysis highlighting the winter monsoon. Part I, reanalysis fields. Meteorl. Atmos. Phys. 64, 123–150 (1997). https://doi.org/10.1007/BF01029689
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01029689