空气质量insights from the Eiffel Tower

How the renowned landmark tracks air quality in Paris with Vaisala sensors.

Monitoring air quality through layers

巴黎是世界上最繁忙的城市之一，拥有224万居民，以及数百万的年度游客。该市还经历了空气污染，当局始终如一地衡量和减轻。

AirParif是一个总部位于巴黎的组织，从沿海城市Bobigny到凡尔赛郡，衡量整个污染物的污染。作为空气质量信息的主要提供商，AirParif跟踪污染位置和数量，并传播数据并向公共和地方气象组织进行预测信息。

Weather and air quality are closely linked: For example, the rise and fall of the atmospheric mixing layer or inversion layer directly impacts air pollution concentrations. The Eiffel Tower—with its tall, narrow and largely hollow structure—is a natural choice for tracking air quality conditions. The building does not affect the movement of air and pollutants. Although Airparif had been using some sensors at the Tower, the organization decided to implement a comprehensive air quality management solution with the best quality sensors available.

As one of the world’s most visited monuments, there are constraints to installing anything on the Eiffel Tower. The solution must meet stringent requirements, and be unobtrusive to viewers while not impacting the Tower’s construction in any way.

Comprehensive, reliable insights

Working with local Vaisala partner SerWIS, Airparif upgraded the Tower with world-class Vaisala weather and air quality sensors. Located at three different altitudes, the solution provides the inversion layer data Airparif needs to track conditions in real time.

To meet installation requirements, the wind sensors and temperature and humidity measurement sensors are positioned on the 6th floor at the level of the East and West pillars.

Two sets of Vaisala WMT700 weather transmitters and Vaisala HMP155 HUMICAP® humidity and temperature probes are installed on the east and west points of the 6th floor of the Tower at 300 m — an approach that gives them the most accurate wind measurements depending on whether the wind blows from the east or the west. Two Vaisala WXT534 weather transmitters are installed at altitudes of 140 m and 220 m.

The Vaisala sensors are connected to a data acquisition and analysis system provided by SerWIS, which transmits the data to Airparif.

Accurate data that’s easy to understand and share

AirParif成功地测量了Eiffel Tower上三个不同高度的温度，湿度以及风速和方向。带有集中数据源的综合解决方案为他们提供了快速跟踪空气质量条件的洞察力，目前又一次地了解当前和历史数据。

VAISALA传感器在广泛的天气和污染物条件下提供了准确，可靠的数据，以方便传播和有效的决策。他们坚固耐用的设计可以达到终身成本低下和可靠操作的天气。混合层的波动及其对当地空气质量条件的影响很容易理解。AirParif将数据馈送到其预测模型中，以进行更准确的空气质量预测 - 每个人都可以使用这些信息来提高意识。