northerly wind 中文意思是什麼
northerly wind
解釋
北風-
The wind is blowing easterly ( westerly, northerly, southerly, southwesterly
風從東（西、北、南、西南）方吹來。 -
When the atmosphere is stable and a weak northerly or northwesterly wind prevails in the prd region, pollutants tend to accumulate, thereby raising the overall pollution level in hong kong
當珠江三角洲區域的大氣穩定並吹著微弱的北或西北風時，區內的污染物較容易積聚，因而令本港整體空氣污染水平上升。 -
When a temperature inversion is formed in the pearl river delta ( prd ) region, or when a weak northerly or northwesterly wind prevails, ambient air pollutants ( including nox and voc ) in the region will be trapped easily in the lower atmosphere and cannot be dispersed effectively. the above factors, if coupled with strong sunlight, will favour the building up of ozone concentrations
當珠江三角洲區域一帶出現逆溫層現象，或者吹微弱北或西北風時，區域內空氣中的污染物（包括氮氧化物及揮發性有機化合物）很容易會被困在大氣的低層，不能有效消散；如再加上強烈的陽光，臭氧濃度便會增高。 -
For instance, hot weather and rising air can help dispersion of air pollutants ; rainfall can wash out certain pollutants in the air ; an occasional phenomenon known as temperature inversion can trap air pollutants in the lower atmosphere ; and still wind conditions can inhibit effective dispersion of air pollutants. moreover, when a weak northerly wind prevails in southern china, the impact of regional air pollution on hong kong will become more serious
例如，炎熱天氣和上升的空氣有助空氣污染物消散；降雨可沖走空氣中部份的污染物；偶爾出現的逆溫層現象能把空氣污染物困在大氣的低層；風靜的情況可引致空氣污染物不能有效消散；及當華南地區吹微弱北風時，整個香港受區域性空氣污染問題影響也會特別嚴重。 -
Continue approach, qnh 1014, surface wind at touchdown is northerly less than 5 knots, at the south east end 070 degrees at 8 knots
繼續進近，氣壓1014毫巴，降落點風速小於5節，東南頭風向70度8節。 -
As hong kong is to the southeast of the prd, air pollutants originating from the prd covering shenzhen ( including shekou ) are easily carried by a northerly or northwesterly wind to the territory. larger particles of smog and dust usually settle near the source of pollution, while the smaller respirable suspended particulates may be carried by the wind for a long distance
由於本港位於珠江三角洲的東南面，偏北或西北方向的風較易將珠江三角洲包括深圳蛇口一帶的區域性空氣污染物帶進本港。黑煙粉塵中較大的粒子一般會在污染源頭附近墜下；但較細小的可吸入的懸浮粒子，則可以隨風被帶到遠處。 -
When a temperature inversion is formed in the pearl river delta ( prd ) region, or when a weak northerly or northwesterly wind prevails, ambient air pollutants ( including nitrogen oxides ( nox ) and volatile organic compounds ( voc ) ) in the region will be trapped easily in the lower atmosphere and cannot be dispersed effectively. the above factors, if coupled with strong sunlight, will generate ozone under photochemical reaction between nox and voc and lead to the phenomenon of photochemical smog
當珠江三角洲區域一帶出現逆溫層，或者吹微弱北或西北風時，區域內空氣中的污染物（包括氮氧化物及揮發性有機化合物）很容易會被困在大氣的低層，不能有效消散；如再加上強烈的陽光，氮氧化物與揮發性有機化合物便會產生光合化學反應，形成臭氧及引致光合化學煙霧現象。
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