UNEP Air Quality Monitoring Station

Posted on October 28th 2015
Share: aqicn.org/faq/2015-10-28/unep-air-quality-monitoring-station


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It is almost two months since our colleagues from the UNEP have been making an interesting move towards promoting the idea that Air Quality is as important as any other business within the United Nations. They started to invest in this domain, and came up with the excellent initiative to create an open footprint for affordable Air Quality Monitoring Stations.



Last August 31st, in a press release, the UNEP DEWA team released an exciting information about their new project, an innovative Air Quality Monitoring station which they co-developed with Nairobi University, and will cost as little as 1.5KUSD per unit. That's at least 10 times cheaper than the traditional BAM and TOEM which one can find at about 15K or more on the market (pure purchase price, maintenance and consumable excluded!). And considering that the UNEP monitoring station is also able to sense much more pollutant like Ozone, NOx and SOx, that makes it really cheaper than the overall traditional solutions. Really big thanks to the UNEP DEWA for pushing this forward and making it an open blueprint solution for all.

So far, what we know about the device is that it will look like something similar in this picture:




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While we are waiting for the UNEP to make an official release for the first blue prints, we have been doing a bit of reverse engineering from all the information we gathered. The device specification is really impressive:

  • Optical Particle Counter PM1, 2.5 and 10 sampling (2 seconds aquisition time)
  • SOx and NOx gas sensor from Alpha Sense.
  • Temperature and Humidity sensor
  • Global Positioning System (GPS)
  • Main controller: Beagle Bone
  • GSM enabled, each station operates as nodes in a network to allow inter-calibration (cool!).
  • Optional ozone (O3) and Volatile Organic Compounds (VOCs) sensors.

  • The monitor is using a 12V power supply - only missing information is how long the monitor can last with a standard 12V battery pack, but that's something the UNEP DEWA and Nairobi University is most likely optimizing now.

    From the pictures available from the press release and the leaflet, this is our best understanding on how things are packed within the box.



    Fortunately the UNEP will soon release the footprints so that every one can share the benefits of the excellent initiative that the UNEP DEWA team has been leading.


    Several new laser-based PM1/PM2.5/PM10 Sensor


    Meanwhile, in order to also contribute to the movement started by the UNEP, we have decided to release all the information accumulated during the past several month ago about new Particulate Matter Air Quality sensors. We do believe that this is extremely important as different sensors tends to give different readings even when collocated, and that can be a big headache when having to inform the citizen about the current air pollution levels.

    All the live testing experimentation from our sensors (which are currently all collocated in Beijing), together with the explanation about the different sensors and experiment setup can be found from this link: sensor. Note this is an on-going work: more sensors will be added as soon as we get hold of new ones. Feel to use the live data feed in the way you want, our primary objective is to increase the awarness and common know-how about Air Quality sensing.


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    For more information about the UNEP Air Quality Monitoring station, you can contact Sami Dimassi, Chief at the Country Outreach, Technology and Innovation Branch of the DEWA (Division of Early Warning and Assessment), UNEP Nairobi. Website: uneplive.unep.org


    Click here to see all the FAQ entries
  • Nitrogen Dioxyde (NO2) in our atmosphere
  • Ozone AQI Scale update
  • Kriging Interpolation




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    关于空气质量与空气污染指数

    本网站采用的污染指数和颜色与EPA是完全相同的。 EPA的指数可以从 AirNow上查到

    空气质量指数空气质量指数级别(状况)及表示颜色对健康影响情况建议采取的措施
    0 - 50一级(优)空气质量令人满意,基本无空气污染各类人群可正常活动
    51 -100二级(良)空气质量可接受,但某些污染物可能对极少数异常敏感人群健康有较弱影响极少数异常敏感人群应减少户外活动
    101-150三级(轻度污染)易感人群症状有轻度加剧,健康人群出现刺激症状儿童、老年人及心脏病、呼吸系统疾病患者应减少长时间、高强度的户外锻炼
    151-200四级(中度污染)进一步加剧易感人群症状,可能对健康人群心脏、呼吸系统有影响儿童、老年人及心脏病、呼吸系统疾病患者避免长时间、高强度的户外锻炼,一般人群适量减少户外运动
    201-300五级(重度污染)心脏病和肺病患者症状显著加剧,运动耐受力降低,健康人群普遍出现症状儿童、老年人及心脏病、肺病患者应停留在室内,停止户外运动,一般人群减少户外运动
    300+六级(严重污染)健康人群运动耐受力降低,有明显强烈症状,提前出现某些疾病儿童、老年人和病人应停留在室内,避免体力消耗,一般人群避免户外活动
    (参考详见http://zh.wikipedia.org/wiki/空气质量指数)

    如果你想了解更多有关空气质量与污染,详见维基百科或者 AirNow

    有关健康建议详见北京的Richard Saint Cyr MD医生的博客:www.myhealthbeijing.com


    Usage Notice: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.



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