Bulletin American Meteorological Society 1139 and amounts. However, much improvement of rain- radiometer that provides data used to measure area and intensity of precipitation. In the near future, these fall estimates is needed and can be attained by using data will be available for producing operational rain- bispectral (visible/infrared) or trispectral (visible/ fall estimates in the United States. The NOA A polar infrared/microwave) approaches, satellite-derived orbiting satellites of the 1990s will make this same moisture soundings, calibration of estimates with ob- type of microwave data available worldwide. Finally, served data and/or climatology, and convective stra- it was recommended that consideration be given to tiform techniques (CST) to identify coldest cirrus and providing future geostationary satellites with micro- heaviest rainfall areas. wav e imaging sensors. Inadequate surface data impedes verification and The workshop participants were concerned about validation of rainfall estimates. Without verification, the development and maintenance of an infrastruc- a user of the estimates has no indication of the con- ture responsible for collection of satellite data; pro- fidence and limitations of the estimates. The work- duction of rainfall estimates using updated, user- shop stressed the need in Africa for calibrated surface adapted techniques; verification of the rainfall radar to verify rainfall estimates, augmentation of the estimates produced; and distribution of the informa- existing network of raingages, and a better commu- tion to user groups. It was suggested that a well- nications system for the exchange of rainfall infor- equipped center wit h the necessary scientific and tech- mation. nical staff be identified. Such groups already exist in The workshop also addressed new developments the United States, Europe, and possibly other regions for improving the technology. Rainfall estimation of the world. techniques that use passive microwave data have proven to be a valuable tool for complementing the The need was expressed for means by which sci- techniques using infrared or visible channel satellite entists, program managers, and users could regularly data. The U.S. Department of Defense Meteorologi- exchange information on satellite rainfall estimation. Workshops, newsletters, and conferences were the cal Satellite Program (DMSP) includes a polar-orbit- suggested media. ing satellite equipped with a passive microwave America's Amateurs ... Starr Memorial Lecture The Starr Memorial Lecture this year will be held at MIT We take weather very seriously! in Room 66-110 at 4 P.M. Wednesday, 8 November 1989. Brian J. Hoskins, professor, of the University of Reading will give the speech "The Dynamics of Storm-Tracks." Our Symposium on Daylight and Solar Radiation Measurement Observer The Symposium on Daylight and Solar Radiation Measure- ment will be held 9-11 October 1989 at the Technische Directory Universitt Berlin (West). The Symposium will be sponsored and by the International Commission on Illumination (CIE) and the World Meteorological Organization (WMO). For more Year-In- information contact Institutfr Lichttechnikder, Technischen Review Universitt Berlin, Einsteinufer 19, D-1000 Berlin 10, tele- for phone (030) 314 224 01. WMO Second World Climate Conference The World Meteorological Organization (WMO) will con- $00 0 vene the Second World Climate Conference in Geneva 12- 23 November 1990, in cooperation with the United Nations postpaid Environment Programme (UNEP), UNESCO, and the Inter- national Council of Scientific Unions (ICSU). For further information, contact Public Information Of- Association of American * * \ fice, World Meteorological Organization, P.O. Box 2300, g Association ol %m\m\ 1211 Geneva 2, Switzerland. Weather Observers « Neither omrwri 5 3 Weather Otoerwr i * Notice of registration deadlines for meetings, workshops, and PO Box 455 seminars, deadlines for submission of abstracts or papers to be Belvidere, IL 61008 ^turao ^ presented at meetings, and deadlines for grants, proposals, awards, nominations, and fellowships must be received at least three months before deadline dates.—News Ed. •
Bulletin of the American Meteorological Society – American Meteorological Society
Published: Sep 1, 1989
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