1995-8 April 7, 1995 Contact: Bob Henson, UCAR Communications Box 3000, Boulder CO 80307 (303) 497-8605, fax 497-8610 Internet bhenson@ucar.edu NCAR DIRECTOR TO OUTLINE HISTORY OF WEATHER OBSERVATIONS IN PUBLIC TALK BOULDERÑThereÕs more to monitoring the earthÕs atmosphere than reading a thermometer. Thousands of reports of temperature, pressure, winds, and moisture are made each dayÑcome fair or foul weatherÑvia human observers, weather balloons, airplanes, radars, and automated systems. New techniques, including pilotless airplanes and Global Positioning System satellites, may lead to a revolution in weather observing. Bob Serafin, director of the National Center for Atmospheric Research (NCAR), will take the public on a tour through 2,000 years of progress in a free talk, ÒWeather Measurements: From Antiquity to Today,Ó on Monday, April 17, at 4:00 p.m. in the Boulder Public Library Auditorium, 1000 Canyon Boulevard. All ages are welcome. The talk is part of LASERS, the Learning about Science Easily and Readily Series, which presents atmospheric research in a nontechnical forum. LASERS is sponsored by the University Corporation for Atmospheric Research (UCAR), which operates NCAR under a cooperative agreement with the National Science Foundation. Below is the complete line-up of LASERS talks this spring and summer. For more information, contact Milli Butterworth, UCAR Communications, 497-8601, e-mail butterwo@ucar.edu. "Weather Measurements: From Antiquity to Today" Bob Serafin, director of NCAR Monday, 17 April, 4:00 p.m. Boulder Public Library Auditorium, 1000 Canyon Boulevard ÑFrom the wind vanes used by the ancient Egyptians and Chinese to todayÕs Doppler radar, the instruments used to observe weather have become vastly more sensitive and sophisticated. This talk spotlights some of the most important developments and discusses where atmospheric observations are headed. "Mesoscale Meteorology: Toward the Understanding of Severe Storms" Rick Anthes, president of UCAR Wednesday, 17 May, 4:00 p.m. Foothills Lab Main Auditorium, 3450 Mitchell Lane, Boulder ÑMesoscale meteorology investigates some of the earthÕs most interesting and important weather phenomena, including hurricanes, thunderstorms, and tornadoes. The cyclone theory developed by Norwegian meteorologists in the early 1900s kicked off 75 years of progress in the study of weather systems on the mesoscale, which extends from a few dozen to a few hundred miles. This talk explains how the theories of the 1920s evolved into the exciting and revealing models of the 1990s. "Atmospheric Chemistry: The Growth of a Discipline" William Chameides, Georgia Institute of Technology Wednesday, 19 July, 4:00 p.m. Mesa Lab Main Seminar Room, west end of Table Mesa Drive, Boulder ÑAtmospheric chemistry as a scientific discipline can be traced back to the 18th century. Since World War II, trace components of the atmosphereÑwith concentrations of less than one part in a millionÑhave been found to have a disproportionately large effect on the environment and human welfare. Today atmospheric chemistry is not only an intriguing scientific discipline, it is one of inordinate social and political relevance. How has that occurred, and where is atmospheric chemistry going in the coming decades? "Predicting Climate: 100 Years of Progress" Eric Barron, Pennsylvania State University Wednesday, 9 August, 4:00 p.m. Foothills Lab Main Auditorium, 3450 Mitchell Lane, Boulder ÑBuilding accurate climate models is one key to anticipating global climate change. How do scientists use computers to accomplish this task? Beginning with physical laws established more than a century ago, this talk will take you step by step through the process of creating a simple, workable climate model. SPECIAL NOTE: The LASERS talk is only one part of a week-long celebration of NCARÕs 35th anniversary that culminates in an open house on Saturday, April 22, between 10:00 a.m. and 5:00 p.m. Included will be special exhibits, weather briefings, guided tours on the information superhighway, and tours of research aircraft. Three sites will be open: ¥ the Mesa Laboratory, at the west end of Table Mesa Drive ¥ the Foothills Laboratory, at 3450 Mitchell Lane, just off 47th Street north of Valmont ¥ the Research Aviation Facility, at Jefferson County Airport, just west of Broomfield. More details on the open house can be found in an upcoming press release and through a special phone line, 497-8670. Writer: Bob Henson ÿ