The Impact of TRMM Data on Mesoscale Numerical Simulation of Supertyphoon Paka

Pu, Zhaoxia; Tao, Wei-Kuo; Braun, Scott; Simpson, Joanne; Jia, Yiqin; Halverson, Jeffrey; Olson, William; Hou, Arthur
October 2002
Monthly Weather Review;Oct2002, Vol. 130 Issue 10, p2448
Academic Journal
This paper assesses the impact of TRMM Microwave Imager (TMI) derived surface rainfall data on the numerical simulation of Supertyphoon Paka (1997). A series of mesoscale numerical simulations of Supertyphoon Paka is performed during its mature stage by using the Pennsylvania State University-National Center for Atmospheric Research (Penn State-NCAR) Mesoscale Model (MM5). The model initial and boundary conditions were derived from Goddard Earth Observing System (GEOS) global analyses with and without assimilation of the TMI surface rainfall data. Simulation results clearly demonstrate that the GEOS analysis with TMI rainfall data leads to an improved simulation of Supertyphoon Paka in terms of its intensity and kinematical and precipitation structures, because rainfall assimilation modifies the environment of the storm such that the initial conditions are more favorable for development of the storm. Since a bogus vortex is often necessary for initialization of typhoon (hurricane) simulations, additional numerical experiments are also performed by introducing mesoscale bogus vortices into GEOS analysis at the initial time using a four-dimensional variational technique. Simulation results indicate that a well-designed bogus vortex can play a dominant role in the improvements of forecasts of typhoon intensity and track. However, incorporation of the TMI data with a bogus vortex is still beneficial because it improves the simulation of the asymmetric storm structure.


Related Articles

  • Simulation of a slope failure induced by rainfall infiltration. Chen, R.; Chen, H.; Chen, K.; Zhung, H. // Environmental Geology;Sep2009, Vol. 58 Issue 5, p943 

    On 1 November 2000, Typhoon Xangsane brought heavy rainfall that caused serious disasters in many areas of northern Taiwan. A slope located at the upstream of the Shanher Stream in Taipei County failed and induced a debris flow. To investigate the environmental influencing factors that caused...

  • Assessing the impact of climate change on basin-average annual typhoon rainfalls with consideration of multisite correlation. Wu, Yii-Chen; Hou, Ju-Chen; Liou, Jun-Jih; Su, Yuan-Fong; Cheng, Ke-Sheng // Paddy & Water Environment;Jun2012, Vol. 10 Issue 2, p103 

    The effects of climate change on synoptic scale storms like typhoons can have profound impacts on practices of water resources management. A stochastic multisite simulation approach is proposed for assessing the impact of climate changes on basin-average annual typhoon rainfalls (BATRs) under...

  • The Secondary Low and Heavy Rainfall Associated with Typhoon Mindulle (2004). Cheng-Shang Lee; Yi-Chin Liu; Fang-Ching Chien // Monthly Weather Review;Apr2008, Vol. 136 Issue 4, p1260 

    This paper presents an observational and numerical study of Typhoon Mindulle (2004) as it affected Taiwan. Mindulle made landfall on the east coast of Taiwan at 1500 UTC 1 July 2004, and after 13 h, it exited Taiwan from the north coast. Severe rainfall (with a maximum amount of 787 mm) occurred...

  • Impact of physics parameterization and 3DVAR data assimilation on prediction of tropical cyclones in the Bay of Bengal region. Chandrasekar, R.; Balaji, C. // Natural Hazards;Jan2016, Vol. 80 Issue 1, p223 

    This study focuses on the sensitivity of tropical cyclones (TCs) simulations to physics parametrization scheme for TCs in the Bay of Bengal (BOB). The goal of this study was to arrive at the optimum set of schemes for the BOB region to increase forecast skill. Four TCs, namely Khaimuk, Laila,...

  • Rainfall frequency analysis using a mixed GEV distribution: a case study for annual maximum rainfalls in South Korea. Yoon, Philyong; Kim, Tae-Woong; Yoo, Chulsang // Stochastic Environmental Research & Risk Assessment;Jul2013, Vol. 27 Issue 5, p1143 

    Extreme rainfalls in South Korea result mainly from convective storms and typhoon storms during the summer. A proper way for dealing with the extreme rainfalls in hydrologic design is to consider the statistical characteristics of the annual maximum rainfall from two different storms when...

  • A statistical modeling approach to passive microwave rainfall retrieval. Smith, Douglas M.; Kniveton, Dominic R.; Barrett, Eric C. // Journal of Applied Meteorology;Feb98, Vol. 37 Issue 2, p135 

    Provides information on the presentation of an empirical algorithm for retrieving rainfall rates from passive microwaves, mainly focusing on the Special Sensor Microwave/Imager) data. Indepth look at the statistical modeling approach; Detailed information on the calibration; Information on the...

  • Burnet Rainfall Summary.  // Burnet Bulletin (Texas);8/10/2011, Vol. 139 Issue 32, p1A 

    The article offers information on the 8.43 inches year-to-date (YTD) rainfall summary in Burnet, Texas through August 2011.

  • San Juan.  // Time International (South Pacific Edition);10/3/94, Issue 40, p20 

    Reports on the downpours on San Juan, Puerto Rico. End of the drought; Water level at the Lake Carraizo reservoir.

  • Weekend rain boosts total to above average. Halvorson, Barry // East Bernard Express (TX);5/20/2010, Vol. 67 Issue 20, p1 

    The article reports that rainfall in Wharton County, Texas has registered an above average during the week of May 13-16, 2010 where the highest recorded rainfall is 8.08 inches.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics