Pressure -1Pa=1N/m2,1mbar(mb)=100Pa(hPa), 1atm=1013.2mb=0.75mmHg 1hPa=1mb,surface(1000),850,700,600, 500,400hPa ·Wind -Wind speed,wind direction,wind rose Other: Cloudiness (total,and low level), precipitation,visibility
• Pressure – 1Pa=1N/m2, 1mbar(mb) = 100Pa(hPa), – 1atm=1013.2mb=0.75mmHg – 1hPa=1mb, surface (1000), 850, 700, 600, 500, 400hPa • Wind – Wind speed, wind direction, wind rose • Other: – Cloudiness (total, and low level), precipitation, visibility
=3π/2-中 ENE Wind angle and the wind velocity vector
N E S ENE W ø α α = 3π / 2 −φ Wind angle and the wind velocity vector
N NNW NNe NNW NNE NW NW NE WNW ENE WNW ENE y0% 2m/s WSW ESE WSW ESE SW. SE SW. SE SSW SSE SSW Frequency Wind Rose and Speed Wind Rose Wind Angle NNNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW C Frequency (% 6 455101010444 2 Mean speed (m/s) 31 292.9324047433.33.02.72.4 2.2 3.44.0 3.7 Vx(m/s)=0.1+0.824×N1.50s
1.505 VN (m /s) = 0.1+ 0.824× N N S W E NE ENE NNE ESE SE SSE NNW NW WNW WSW SW SSW C 10% N S W E NE ENE NNE ESE SE SSE NNW NW WNW WSW SW SSW 2m/s Frequency Wind Rose and Speed Wind Rose Wind Angle N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW C Frequency (%) 6 4 5 5 10 10 10 4 4 4 2 2 3 4 8 8 11 Mean speed (m/s) 3.1 2.9 2.9 3.2 4.0 4.7 4.3 3.3 3.0 2.7 2.4 2.2 2.4 3.4 4.0 3.7 -
郑州高新技术产业开发区 W0.15 污水工程规划图 总体规划阳肌 图例 口建设用地 On planning maps,there is often a"wind rose",which 口公共绿地 shows the importance of air pollution impacts ☐防护绿地 口河流 日现状干管 现状支管 彐规划干管 曰规划支管 口污水处理厂 四立交桥 ☐广场 ■一☐公交场站 ☐公共停车场 。☐对外交通 回轨道交通 高压走廊 华南理工大学建筑学院郑州市规划勘测设计研究院郑州高新技术产业开发区管理委员会2008.8
On planning maps, there is often a “wind rose”, which shows the importance of air pollution impacts
1.3 Thermal Properties Why important? Air is an compressible gas; -Sun radiation is the input energy; -Changes in weather/climate involve heat processes; ·Energy budget Greenhouse effect Atmospheric instability
1.3 Thermal Properties • Why important? – Air is an compressible gas; – Sun radiation is the input energy; – Changes in weather/climate involve heat processes; • Energy budget • Greenhouse effect • Atmospheric instability