Beijing welcomes the north wind the air quality is excellent for 3 consecutive days jiuyaogan

Beijing Ming up north wind: air quality for 3 consecutive days for the level of excellent original title: "powu huapao" or worsening air pollution JINGWAH Times News (reporter Wang Shuo) in the small north wind blowing, the Lunar New Year’s day at 10 in the morning, Beijing that is out of the new year’s Eve Fireworks caused severe pollution, and have enjoyed good air for three days. The third night, along with the diffusion conditions deteriorate, air quality in Beijing yesterday morning (4) fell into severe pollution. According to the municipal environmental monitoring center is expected, pollution will continue until today, and tonight’s "powu huapao" or will further aggravate the pollution, we recommend that you try to reduce the discharge of fireworks. Is the beginning of the four month is yesterday, diffusion conditions deteriorate and nocturnal rainfall, the capital’s air quality also gradually slip. Yesterday morning, the city of Beijing a "misty rain misty" scene, most area visibility is only 3 to 5 kilometers. The monitoring of Beijing city environmental protection monitoring center showed yesterday morning at 8, the concentration of PM2.5 in six districts of the city is 168 micrograms per cubic meter (more than 150 micrograms per cubic meter to 5 heavily polluted). Yesterday morning, the concentration of PM2.5 in six districts of the city remained at the concentration level of severe pollution, the afternoon concentration decreased slightly, but the evening again rose to the level of severe pollution. Municipal Environmental Monitoring Center is expected during the day today, Beijing is in the northern part of the high pressure control, the northeast wind slowly strengthened, is not conducive to the spread of pollutants, the air quality is expected to moderate pollution levels in 4. But it is worth noting that today is the beginning of the five month, there is "powu" fireworks custom, based on past experience, concentrated fireworks will exacerbate air pollution today, part of the region or the emergence of heavy pollution. Remind the city meteorological department in Beijing today, there will still be precipitation, air pollution diffusion conditions, we recommend that you try to reduce or not fireworks. But the good news is that tomorrow, with four or five North visit Beijing, pollutants will be completely dissipated. The municipal environmental monitoring center forecast also shows, 13 days, 14 days, 15 days, the air quality of Beijing will continue for 3 days to maintain at the level of excellent level. > > related to local fireworks on New Year’s Eve heavy pollution according to the monitoring of the city environmental monitoring center, February 7th (EVE), Beijing air quality level 2, the primary pollutant is PM2.5, the daily average concentration of 52 micrograms per cubic meter. Since the new year’s Eve since 19, the diffusion condition deteriorated and fireworks effects, the concentration of PM2.5 increased, part of the site concentration reached 100 micrograms per cubic meter from more than 20. 23 most monitoring sites PM2.5 hourly concentration were close to 150 micrograms per cubic meter, part of the site to 200 micrograms per cubic meter. In February 8th 0 PM to 1 pm, due to concentrated discharge of fireworks, the city’s PM2.5 hourly concentration was jumped, at 2 in the morning the peak concentration of 700 micrograms per cubic meter. The highest value appeared in the town of Pinggu, Tongzhou District, Fangshan, Yizhuang and Liangxiang border southwest of Beijing station, hourly concentration reached 1000 micrograms per cubic meter or more. Miyun reservoir, but during the same period away from the discharge area of Badaling monitoring 3

北京明起迎北风:空气质量连续3天为一级优   原标题:“破五花炮”或加重空气污染   京华时报讯(记者王硕)在小北风的吹送下,大年初一上午10点,北京即摆脱了除夕夜烟花燃放带来的重度污染,并接连享受了三日的优良好空气。初三夜间,随着扩散条件转差,北京的空气质量在昨天(初四)上午跌入重度污染。据市环保监测中心预计,污染将持续至今天,而今晚的“破五花炮”或将进一步加重污染,建议大家尽量减少燃放烟花爆竹。   昨天是正月初四,受扩散条件转差及夜间降雨影响,京城的空气质量也逐步转差。昨天一早,北京城内一片“雾雨朦胧”的景象,大部分地区能见度只有3到5公里。而北京市环保监测中心的监测显示,昨天早上8点,城六区的PM2.5浓度为168微克 立方米(超过150微克 立方米即为5级重度污染)。昨天上午,城六区的PM2.5浓度基本维持在重度污染的浓度水平,下午浓度略有下降,但是傍晚又再度回升至重度污染水平。   市环保监测中心预计,今天白天,北京处于北部高压控制,东北风缓慢加强,比较不利于污染物的扩散,预计空气质量将处在4级中度污染水平。但值得注意的是,今天是正月初五,民间有“破五”燃放烟花爆竹的习俗,根据以往经验,集中燃放烟花爆竹将加剧今天的空气污染程度,部分地区或将出现重污染。   市气象部门提醒,今天北京仍将有降水,空气污染扩散条件差,建议大家尽量减少或不燃放烟花爆竹。但好消息是,明天起,随着四五级北风造访京城,污染物将彻底消散。而市环保监测中心的预报也显示,13日、14日、15日,北京的空气质量将持续3日维持在一级优的水平。   >>相关   除夕烟花致局部地区重污染   据市环保监测中心的监测显示,2月7日(除夕),北京空气质量2级,首要污染物为PM2.5,日均浓度为52微克 立方米。自除夕19时起,受扩散条件转差及烟花爆竹燃放影响,PM2.5浓度呈上升趋势,20时起部分站点浓度达到100微克 立方米以上。23时多数监测站点PM2.5小时浓度都接近150微克 立方米,部分站点达到200微克 立方米。   2月8日0时至1时,由于烟花爆竹集中燃放,全市PM2.5小时浓度明显跃升,凌晨2时达到峰值浓度700微克 立方米。全市最高值出现在平谷镇、通州区、房山良乡、亦庄和京西南边界站,小时浓度均达到1000微克 立方米以上。但同期远离燃放区域的密云水库、八达岭等监测子站PM2.5浓度在40微克 立方米以内,比全市平均值低600微克 立方米以上。   除夕夜间,由于地面为静风,污染扩散条件明显转差,除夕后半夜(2月8日1时-6时)全市PM2.5浓度始终维持在较高水平(460微克 立方米以上),但是到了初一早上,由于北风给力,污染物很快散去。监测显示,初一早上8点,城六区的PM2.5浓度为363微克 立方米,但是到了上午10点,城六区的PM2.5浓度已经迅速下降至18微克 立方米,两个小时内城六区的空气质量由六级严重污染提升至一级优水平。 责任编辑:向昌明 SN123相关的主题文章: