Fine Scale Meteorology & Air Quality Models - School of Architecture ...

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ASI2_Lecture 3_7/12/2011 Impact of UCPs on Mesoscale modeling: Mixing height and wind vectors at 50 m AGL a) the standard version of MM5 using G-S PBL b) GS PBL including UCP w/BouLac a) Mixing Height at 6 p.m. b) Mixing Height at 6 p.m. X 100 80 60 40 20 0 0 20 40 60 80 100 Y (in meter) 2000 1800 1600 1400 1200 1000 800 600 X 100 80 60 40 20 5m.s -1 0 0 20 40 60 80 100 Y (in meter) 2000 1800 1600 1400 1200 1000 800 600 5m.s -1 ASI 2: URBAN CLIMATE AND AIR POLLUTION School of Architecture, The Chinese University of Hong Kong, Hong Kong, 7-8 Dec 2011 Impact of UCPs on Mesoscale modeling Difference fields (UCP- noUCP) MM5 simulations LHS: mixing height RHS: air temperature, wind vectors @50 m AGL X X X a) 6a.m. 100 b) 2p.m. 100 c) 6p.m. 100 0 0 20 40 60 80 100 Y 0 0 20 40 60 80 100 Y 0 0 20 40 60 80 100 Y ASI 2: URBAN CLIMATE AND AIR POLLUTION School of Architecture, The Chinese University of Hong Kong, Hong Kong, 7-8 Dec 2011 80 60 40 20 80 60 40 20 80 60 40 20 (in meter) 250 200 150 100 50 0 -50 -100 -150 -200 -250 (in meter) 250 200 150 100 50 0 -50 -100 -150 -200 -250 (in meter) 250 200 150 100 50 0 -50 -100 -150 -200 -250 X X X 100 80 60 40 20 100 80 60 40 20 100 0 0 20 40 60 80 100 Y 0 0 20 40 60 80 100 Y 80 60 40 20 6a.m. 2p.m. 6p.m. 0 0 20 40 60 80 100 Y (in K) 4 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 0.2 m.s -1 (in K) 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 0.2 m.s -1 (in K) 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 0.2 m.s -1 8
ASI2_Lecture 3_7/12/2011 Sources of building data High resolution (meter scale) building data are technologically and operationally feasible to obtain; datasets are becoming increasingly more available and affordable. Such data provide the bases for advanced contemporary grid modeling and for each specific urban area. Photogrammetric methods Airborne LIDAR platforms ASI 2: URBAN CLIMATE AND AIR POLLUTION School of Architecture, The Chinese University of Hong Kong, Hong Kong, 7-8 Dec 2011 High resolution urban mesoscale modeling Digitization of urban details now feasible/desirable Salt Lake City Changing Morphology Hong Kong, Courtesy: Chan, Lau and Fung Nanjing, a rapidly evolving city Courtesy of Tijian Wang ASI 2: URBAN CLIMATE AND AIR POLLUTION School of Architecture, The Chinese University of Hong Kong, Hong Kong, 7-8 Dec 2011 9
Page 1 and 2: ASI2_Lecture 3_7/12/2011 Croucher A
Page 3 and 4: ASI2_Lecture 3_7/12/2011 Multi-Scal
Page 5 and 6: ASI2_Lecture 3_7/12/2011 PBL scheme
Page 7: ASI2_Lecture 3_7/12/2011 Part 2b: U
Page 11 and 12: ASI2_Lecture 3_7/12/2011 HYPOTHESIS
Page 13 and 14: ASI2_Lecture 3_7/12/2011 Geo‐Refe
Page 15 and 16: ASI2_Lecture 3_7/12/2011 Cooling Ca
Page 17 and 18: ASI2_Lecture 3_7/12/2011 Crossroads
Page 19 and 20: ASI2_Lecture 3_7/12/2011 ACM-2 BouL
Page 21 and 22: ASI2_Lecture 3_7/12/2011 erturbatio
Page 23 and 24: ASI2_Lecture 3_7/12/2011 Suggested
Page 25 and 26: ASI2_Lecture 3_7/12/2011 Sensitivit
Page 27 and 28: ASI2_Lecture 3_7/12/2011 Dependence
Page 29 and 30: ASI2_Lecture 3_7/12/2011 HCHO Histo
Page 31 and 32: ASI2_Lecture 3_7/12/2011 SGV parame

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