Search Results

You are looking at 1 - 10 of 19 items for :

  • Southern Ocean x
  • Review Articles in Monthly Weather Review x
  • All content x
Clear All
Dayton G. Vincent

; and Kiladis et al. 1989), that investigated the potential influence of the three mainlandmasses in the Southern Hemisphere on the locationof the SPCZ, particularly during the summer seasonwhen continental heating is a maximum and the SPCZis most intense. The net result of these studies suggeststhat the positioning of the land-ocean distribution haslittle influence on the location of the SPCZ; however,in the experiments by Kiladis et al. (1989), changes inthe heating and circulation patterns over

Full access
Roland A. Madden and Paul R. Julian

originating in southern midlatitudes is an interesting question. Based on evidencefrom Tananarive (18.8-S, 47.5-W), Yasunari (1981)speculates that the origin of the clouds might be coldair outbreaks from Southern Hemisphere midlatitudes.Murakami (1987) noted that when there was clear eastward propagation of disturbances along the equatorthere was also a strong cold surge from the southernmidlatitude Indian Ocean at 850 hPa. While this evidence is intriguing, the role of southern midlatitudes inthe active

Full access
Clifford Mass and Brigid Dotson

injury, national media attention has been less than for their tropical cousins. Only a handful has been described in the literature ( Lynott and Cramer 1966 ; Reed 1980 ; Reed and Albright 1986 ; Kuo and Reed 1988 ; Steenburgh and Mass 1996 ), and questions remain regarding their mesoscale and dynamic evolutions, including interactions with terrain. A review of the National Oceanic and Atmospheric Administration (NOAA) publication Storm Data and newspaper accounts suggests a conservative

Full access
Robert Wood

those in the Southern Hemisphere, the seasonal amplitude of the cover is greatest a few hundred kilometers downwind of the annual mean stratocumulus cover (cf. Fig. 4a ). Spring or early summertime maxima are typical for these regions and over the Northern Hemisphere midlatitude oceans, and it is notable that the stratocumulus cover of the two major Southern Hemisphere subtropical marine sheets has a much stronger seasonal cycle and peaks earlier in the season than over the Northern Hemisphere

Full access
T. N. Krishnamurti

resulting in theaforementioned net radiative losses as are measured atsatellite altitude. The stratification is thus largelymaintained by adiabatic warming associated with thedownward motions. The compensating upward massflux occurs over distant convective areas (see Blake etal., 1983). This can best be portrayed from an analysisof the divergent wind, which shows the active monsoonover Northern Malaysia, Southern Indochina and thewestern Pacific Ocean. The high-level divergentstreamlines emanate from

Full access
J. R. Garratt

Jt~L- 1977 J. R. G A R R A T T 915Review of Drag Coefficients over Oceans and Continents J. R. GA~A'r'rCSIRO Division of Atmospheric Physics, A spendale, Victoria, 3195, Australia(Manuscript received 1 September 1976, in final form 29 March 1977) ABSTRACT Observations of wind stress and wind profiles over the ocean reported in the literature over

Full access
David M. Schultz

resembling the confluence model occur frequently is near Australia. The meridional front ( Civilian Staff 1945 ; Troup 1956 ; Taljaard 1972 ) derives its name from being a north–south-oriented front, sandwiched within a hyperbolic deformation zone created between two mobile anticyclones over the Southern Ocean. Many of these fronts are not true cold fronts ( Troup 1956 ) and may simply represent deformation zones, however. Observations of such fronts before they arrive onshore do not exist

Full access
Markus Gross, Hui Wan, Philip J. Rasch, Peter M. Caldwell, David L. Williamson, Daniel Klocke, Christiane Jablonowski, Diana R. Thatcher, Nigel Wood, Mike Cullen, Bob Beare, Martin Willett, Florian Lemarié, Eric Blayo, Sylvie Malardel, Piet Termonia, Almut Gassmann, Peter H. Lauritzen, Hans Johansen, Colin M. Zarzycki, Koichi Sakaguchi, and Ruby Leung

the resolved fluid dynamical aspects of the atmosphere or the ocean, unresolved fluid dynamical aspects (e.g., those represented by physical parameterizations such as subgrid-scale mixing), and nonfluid dynamical elements such as radiation and microphysical processes. The challenges associated with bringing together all the various discretized components to create a coherent model will be referred to here as physics–dynamics coupling. The term physics–dynamics coupling has evolved from the fact

Open access
Clark Evans, Kimberly M. Wood, Sim D. Aberson, Heather M. Archambault, Shawn M. Milrad, Lance F. Bosart, Kristen L. Corbosiero, Christopher A. Davis, João R. Dias Pinto, James Doyle, Chris Fogarty, Thomas J. Galarneau Jr., Christian M. Grams, Kyle S. Griffin, John Gyakum, Robert E. Hart, Naoko Kitabatake, Hilke S. Lentink, Ron McTaggart-Cowan, William Perrie, Julian F. D. Quinting, Carolyn A. Reynolds, Michael Riemer, Elizabeth A. Ritchie, Yujuan Sun, and Fuqing Zhang

challenges associated with TCs that become extratropical cyclones, a process known as extratropical transition (ET; Jones et al. 2003 ). Tropical cyclones gain energy from warm ocean waters through evaporation and subsequent latent heat release by deep, moist convection. The storm develops a warm core as a result, with the strongest winds near the surface that decrease in strength with height. The wind, precipitation, and temperature fields become more axisymmetric as the TC matures. Conversely

Open access
Bogdan Antonescu, David M. Schultz, Fiona Lomas, and Thilo Kühne

waterspouts would be restrictive for some European countries. Several countries have a large part of their landscape covered by lakes (e.g., 187 000); others countries contain peninsulas (e.g., southern Italy). Other countries consist entirely of a single island (e.g., Malta in the Mediterranean Sea) or comprise archipelagos (e.g., Greece has more than a thousand islands). To accommodate these countries, in this article, the following tornado definition adapted from Rauhala et al. (2012) is used: a

Full access