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members of commissions, boards, and committees1 EXECUTIVE COMMITTEE2 C. J. Murino J. Smagorinsky E. W. Bierly E. G. Droessler H. D. Orville J. R. Mahoney K. C. Spengler D. F. Landrigan COMMITTEES OF THE EXECUTIVE COMMITTEE Awards Chairman: Prof. David D. Houghton, Dept. of Meteorology, University of Wisconsin-Madison, Madison, WI 53706 Dr. Douglas A. Abbott, 2413 Antiquity Lane, Belleville, IL 62221 Dr. Elbert W. Friday, Jr., 9827 Wolcott Ct., Burke, VA 22015 Dr. Jerry D. Mahlman, Geophysical Fluid Dynamics Laboratory, NOAA, Box 308, Princeton University, Princeton, NJ 08540 Prof. Thomas B. McKee, Dept. of Atmospheric Science, Colorado State University, Foothills Campus, Fort Collins, CO 80523 'The executive director is an ex officio member of all commissions, boards, and committees. 2Addresses listed on preceding page. Bulletin American Meteorological Society 945 Unauthenticated | Downloaded 10/08/21 07:43 PM UTC 946 Vol. 66, No. 8, August 1985 Nominating3 Chairman: Prof. Richard E. Orville, Dept. of Atmospheric Science, State University of New York at Albany, 1400 Washington Ave., Albany, NY 12222 Dr. Robert C. Beardsley, Clark Laboratory, Woods Hole Oceanographic Institution, Woods Hole, MA 02536 Col. Floyd F. Hauth, U.S. Air Force, 312 Donn Dr., O'Fallon, IL 62269 Prof. Kristina B. Katsaros, Dept. of Atmospheric Science, University of Washington, Seattle, WA 98195 Richard C. Przywarty, Alaska Regional HQ, National Weather Service, NOAA, 701 C St., P.O. Box 23, Anchorage, AK 99513 Admissions Chairman: Owen R. Cote, Electronic Systems Div., Air Force Systems Command, Hanscom Air Force Base, MA 01731 Valentine J. Descamps, U.S. Environmental Protection Agency, Region I, J. F. Kennedy Federal Bldg., Boston, MA 02203 David B. Spiegler, The Mitre Corporation, P.O. Box 208, Bedford, MA 01730 John E. Wallace, Weather Services Corporation, 131A Great Rd., Bedford, MA 01730 John W. Wilson, Stone and Webster Engineering Corporation, P.O. Box 2325, Boston, MA 02107 Ethics Chairman: Richard G. Semonin, Administration and Research, Illinois State Water Survey, 2204 Griffith Dr., Champaign, IL 61820 Keith J. Brown, North American Weather Consultants, 1141 E. 3900 S., ABO, Salt Lake City, UT 84117 Dr. Neil L. Frank, National Hurricane Center, NOAA, 1320 S. Dixie Highway, Coral Gables, FL 33146 Jerry D. Hill, Climate Assessment Technology, Inc., 11550 Fuqua, Suite 355, Houston, TX 77034 Charles F. Roberts, P.O. Box 639, New Market, VA 22844 History of the Chairman: Dr. Gisela Kutzbach, 1138 Shorewood Blvd., Madison, WI 53705 Atmospheric Sciences Prof. Helmut E. Landsberg, Institute of Physical Science and Technology, University of Maryland, College Park, MD 20742 Prof. George W. Platzman, 4846 Kenwood Ave., Chicago, IL 60615 Dr. Ronald C. Taylor, Div. of Atmospheric Sciences, National Science Foundation, 1800 G St., N.W., Washington, DC 20550 Morley K. Thomas, 15 Lewes Crescent, Toronto, Ont., Canada M4N 3J1 Dr. Warren M. Washington, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 Investment3'4 Chairman: Dr. Werner A. Baum, College of Arts and Sciences, The Florida State University, Tallahassee, FL 32306 Eugene Bollay, 411 Los Robles Ln., Santa Barbara, CA 93105 Prof. Charles L. Hosier, Office of the Vice President for Research and Academic Affairs, The Pennsylvania State University, Kern Bldg., University Park, PA 16802 Dr. Thomas F. Malone, Unit 203, 5 Bishop Rd., W. Hartford, CT 06119 COMMITTEES OF THE COUNCIL Chairman: Peter R. Leavitt, Weather Services Corporation, 131A Great Rd., Bedford, MA 01730 FellOWS3 Dr. Francis P. Bretherton, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 Dr. Phillip E. Merilees, Atmospheric Environment Service/ARDG, 4905 Dufferin St., Toronto, Ont., Canada M3H 5T4 3The AMS president serves ex officio on this committee. 4The chairman of the Planning Commission, the executive director, and the secretary-treasurer serve ex officio on this committee. Unauthenticated | Downloaded 10/08/21 07:43 PM UTC Bulletin American Meteorological Society 947 Prof. Robert J. Renard, Dept. of Meteorology, Naval Postgraduate School, Monterey, CA 93940 Dr. Joseph T. Schaefer, National Weather Service/SSD, NOAA, 601 E. 12th St., Kansas City, MO 64106 Sverdrup Gold Medal Chairman: Prof. Owen M. Phillips, Dept. of Earth and Planetary Sciences, Johns Hopkins Uni- versity, Baltimore, MD 21218 Dr. Kirk Bryan, Jr., Geophysical Fluid Dynamics Laboratory, NOAA, Princeton University, P.O. Box 308, Princeton, NJ 08540 Dr. Klaus Hasselmann, Max-Planck Institute, Bundestrasse 55, D-2000 Hamburg 13, FRG Dr. Michael S. Longuet-Higgins, Dept. of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver St., Cambridge, England CB3 9EW Public Policy Chairman: Dr. Clifford J. Murino, University Corporation for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 Dr. Joseph Smagorinsky, 21 Duffield PL, Princeton, NJ 08540 Dr. Eugene W. Bierly, Div. of Atmospheric Sciences, National Science Foundation, 1800 G St., N.W., Washington, DC 20550 Dr. Earl G. Droessler, 1305 Glen Eden Dr., Raleigh, NC 27612 Dr. Richard E. Hallgren, Weather Services, National Oceanic and Atmospheric Administration, 8060 13th St., Silver Spring, MD 20910 Dr. Joanne Simpson, Severe Storms Branch - Code 612, NASA Goddard Laboratory for Atmos- pheres, Greenbelt, MD 20771 COMMISSION ON PROFESSIONAL AFFAIRS Chairman: Prof. Werner A. Baum, College of Arts and Sciences, Florida State University, Tallahassee, FL 32306 Members: Chairmen of the constituent Boards W. A. Baum Board of Certified Chairman: Dr. Walter A. Lyons, R*Scan Corporation, 511 11th Ave. S., Minneapolis, MN 55415 Consulting Robert L. Carnahan, National Weather Service, NOAA, 8060 13th St., Silver Spring, MD 20910 Meteorologists Dr. George E. McVehil, McVehil-Monnett Associates, 8801 Fox Dr., Suite 350, Thornton, CO 80221 Dennis C. Perryman, 662 Hudson Dr., Santa Clara, CA 95051 David B. Smith, Chas. T. Main, Inc., Prudential Center, Boston, MA 02199 Board of Broadcast Chairman: Todd S. Glickman, WSI Corporation, P.O. Box B, 131 Great Rd., Bedford, MA 01730 Meteorology Joel P. Bartlett, Jr., KPIX-TV 5, 855 Battery St., San Francisco, CA 94111 Dr. John F. Chandik, WGRZ-TV, 259 Delaware Ave., Buffalo, NY 14202 Vincent D. Condella, Jr., WITI-TV Weather, 9001 N. Green Bay Rd., Milwaukee, WI 53206 David P. Murray, "Good Morning America," ASCAP Bldg., One Lincoln Plaza, New York, NY 10023 Leonard M. Slesick, KVII-TV, Box 13000, 4th and Polk Sts., Amarillo, TX 79101 Michael R. Smith, WeatherData, Inc., 833 N. Main St., Wichita, KS 67203 Unauthenticated | Downloaded 10/08/21 07:43 PM UTC 948 Vol. 66, No. 8, August 1985 Board of Private Chairman: Jack G. Coblenz, Dames & Moore, 4321 Directors Row, Suite 200, Houston, TX 77092 Sector Richard T. Egami, Desert Research Institute, University of Nevada, P.O. Box 60220, Reno, NV Meteorology 89506 Paul M. Fransioli, Black & Veatch Consulting Engineers, P.O. Box 8405, Kansas City, MO 64114 Thomas F. Lavery, ERT, Inc., 696 Virginia Rd., Concord, MA 01742 Thomas J. Lockhart, 841 Seventh Ln., Fox Island, WA 98333 Timothy C. Spangler, WESTEC Services, 3211 5th Ave., San Diego, CA 92103 Board for Chairman: Cristopher D. Hill, National Weather Service Forecast Office, NOAA, 3905 Vista Ave., Operational Boise, ID 83705 Government Dr. Kenneth C. Crawford, National Weather Service Forecast Office, NOAA, P.O. Box 59997, Meteorologists Oklahoma City, OK 73159 SM/Sgt. Charlie A. Crisp, U.S. Air Force, 12129 S. 29th St., Omaha, NE 68123 John A. Jannuzzi, National Weather Service Forecast Office, NOAA, 5420 N.E. Marine Dr., Portland, OR 97218 Jay S. Rosenthal, 1902 S. Parnell Ave., W. Los Angeles, CA 90025 Capt. Jesus B. Tupaz, U.S. Navy, NSTL Station, Bay St. Louis, MS 39529 PUBLICATIONS COMMISSION Chairman: Prof. John A. Dutton, Dept. of Meteorology, Pennsylvania State University, University Park, PA 16802 Members: Editors-in-Chief of periodicals and serials Members at Large: Dr. Duncan C. Blanchard, Atmospheric Research Center, State University of New York-Albany, 1400 Washington Ave., Albany, NY 12222 Prof. Joshua Z. Holland, Dept. of Meteorology, University of Maryland, College Park, MD 20742 Dr. James R. Mahoney, Environmental Sciences Department, Bechtel Corporation, P.O. Box 3965, San Francisco, CA 94119 J. A. Dutton Board of the Journal of the Atmospheric Sciences Co-Chief Editor: Prof. J. Michael Fritsch, Dept. of Meteorol- ogy, Pennsylvania State University, 503 Walker Bldg., Uni- versity Park, PA 16802 Co-Chief Editor: Dr. Peter J. Webster, Dept. of Meteorology, Pennsylvania State University, 503 Walker Bldg., University Park, PA 16802 J. M. Fritsch P. J. Webster Unauthenticated | Downloaded 10/08/21 07:43 PM UTC Bulletin American Meteorological Society 949 J AS Editors: Prof. Stephen K. Cox, Dept. of Atmospheric Sciences, Colorado State University, Ft. Collins, CO 80523 Dr. G. Brant Foote, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 Prof. Conway B. Leovy, Dept. of Atmospheric Sciences, University of Washington, Seattle, WA 98195 Prof. Mankin Mak, Dept. of Atmospheric Sciences, University of Illinois, Urbana, IL 61801 J AS Associate Editors: Richard A. Anthes, National Center for Atmospheric Research Donna Blake, Naval Ocean Research and Development Activity Chih-Pei Chang, Naval Postgraduate School Charles F. Chappell, National Oceanic and Atmospheric Administration Barney J. Conrath, NASA/Goddard Space Flight Center Robert E. Dickinson, National Center for Atmospheric Research
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  • Morphology, Intensity, and Rainfall Production of MJO Convection: Observations from DYNAMO Shipborne Radar and TRMM

    Morphology, Intensity, and Rainfall Production of MJO Convection: Observations from DYNAMO Shipborne Radar and TRMM

    FEBRUARY 2015 X U A N D R U T L E D G E 623 Morphology, Intensity, and Rainfall Production of MJO Convection: Observations from DYNAMO Shipborne Radar and TRMM WEIXIN XU AND STEVEN A. RUTLEDGE Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado (Manuscript received 1 May 2014, in final form 16 September 2014) ABSTRACT This study uses Dynamics of the Madden–Julian Oscillation (DYNAMO) shipborne [Research Vessel (R/V) Roger Revelle] radar and Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR) datasets to investigate MJO-associated convective systems in specific organizational modes [mesoscale convective system (MCS) versus sub-MCS and linear versus nonlinear]. The Revelle radar sampled many ‘‘climatological’’ aspects of MJO convection as indicated by comparison with the long-term TRMM PR statistics, including areal-mean 2 rainfall (6–7 mm day 1), convective intensity, rainfall contributions from different morphologies, and their variations with MJO phase. Nonlinear sub-MCSs were present 70% of the time but contributed just around 20% of the total rainfall. In contrast, linear and nonlinear MCSs were present 10% of the time but contributed 20% and 50%, respectively. These distributions vary with MJO phase, with the largest sub-MCS rainfall fraction in suppressed phases (phases 5–7) and maximum MCS precipitation in active phases (phases 2 and 3). Similarly, convective–stratiform rainfall fractions also varied significantly with MJO phase, with the highest convective fractions (70%–80%) in suppressed phases and the largest stratiform fraction (40%–50%) in active phases. However, there are also discrepancies between the Revelle radar and TRMM PR.