PPT-SO254 - Advection What is advection?

Advection is the transfer of a property of the air by the wind There are many things that can be advected temperature vorticity relative and planetary momentum moisture Advection of . geog-www.sbs.ohio-state.edu/courses/G620/.../ASP620Lecture10.ppt. . Cyclogenesis. Extratropical cyclones often form when an . upper level trough (e.g. a shortwave) . approaches . a front that is stationary or moving relatively slowly. Convection. Mike July. 2011 Severe Weather Seminar. Elevated . vs. Overrunning. Colman. – first coined the term “. elevated. ” in 1990. . His research found that forcing for these storms does not typically come from convectively unstable air ascending a sloped surface (implying . Lecture 11. Mass Transfer, Stefan problem, Liquid/vapor interface boundary condition, Example problem 3.9. Announcements. Midterm 1. Monday, September 28, 2015. 8-10 AM, PE 104. ?. Review . Friday, September . Extratropical. cyclones. Visible satellite image 26 Oct 2010. Low pressure 955.2 . mb. . Image courtesy NASA. Cloud pattern typically associated with an . extratropical. cyclone (Image courtesy NASA). , Chapter 1:. Basics of atmospheric motion. time scales of atmospheric variability. Lovejoy 2013, EOS . Lovejoy 2013, EOS . time scales of atmospheric variability. Gage and . Nastrom. (1985). [shifted x10 to right]. Friday . 09. /. 26. /2014. Continue . Review Material. Geopotential. Thickness. Thermal Wind. Geopotential. , Thickness, and the Thermal Wind. What is . geopotential. ?. . Work. needed to lift a unit of mass from sea level to a given altitude…. What is advection?. Advection is the transfer of a property of the air by the wind. There are many things that can be . advected. : temperature, vorticity (relative and planetary), momentum, moisture. Extratropical. cyclones. View of an . extratropical. cyclone from above (top panel) and from the side (bottom panel). In top panel, gray lines are isobars with pressures in . mb. , red L indicates the center of the . GCMs. Nathan Arnold. 1,2. with Eli Tziperman. 1. , . Zhiming. Kuang. 1. , . David Randall. 2. and Mark Branson. 2. 1 . Harvard University, . 2 . Colorado State University. Tropical Dynamics Workshop. Kohei. Kawano. 1. , . Kohei. Aranami. 1. , . Tabito. Hara. 1. , . Kengo. Matsubayashi. 1. , Masami Sakamoto. 1. , Yuji . Kitamura. 2. 1. Numerical Prediction Division, Japan Meteorological Agency. Extratropical. Cyclone 3-4 January 2008. Record-setting wind speeds. Central pressure of 956 . mb. Rapid . Cyclogenesis. Characterized by strong warm . a. dvection. Heavy Precipitation. . Showing Warm Advection in Northern California. S. ensitivity . A. pproximate . M. ethod . Pedram. . Falsafi. , Amir Hakami. Carleton University, Canada. CMAS 2015, . Chapel . Hill. for Sensitivity Advection in CMAQ. Overview. Horizontal advection in CTMs. Negin Sobhani . 1,2. , . Davide. Del Vento. 2. ,David Gill. 2. , Sam Elliot. 3,2. ,and . Srinath. Vadlamani. 4. 1. 1 . University of Iowa . 2. National Center for atmospheric Research(NCAR) . 3. Look at vertical distribution of geostrophic wind.. Identify thermal advection, and backing and veering winds.. Look at an example map.. Thermal Wind. 300 . hPa. . isotachs. of the geostrophic wind at 00 UTC.