Tag Archive for: urban air quality

Hawa Dawa establishes a local network for measuring air quality in the city of Seelze

Hawa Dawa has been commissioned by the city of Seelze to establish a local network of IoT (Internet of Things) measuring instruments. A total of three Hawa Dawa Sentience air measurement devices will provide hourly values for nitrogen dioxide (NO2), ozone (O3), and particulate matter (PM2.5 and PM10) in places identified by the city of Seelze as useful.

In the city of Seelze live 36,000 inhabitants on an area of 54 square kilometres. Seelze neighbours directly to the west on the state capital of Lower Saxony, Hanover. There are no permanently installed public measuring stations in the city of Seelze. Temporary measurements did not show that the official threshold value for NO2 of 40.0 micrograms per m3 was exceeded. Nevertheless, the city of Seelze is aware of the health risks posed by polluted air even below the legal limit and has decided to actively address this problem. The first step is to obtain clarity on the current air quality.

The Hawa Dawa solution for Seelze presents the measured values close to real-time in digital form on an interactive dashboard. Monthly reports provide in-depth insights into patterns and timing, taking into account temperature and wind data. By using Hawa Dawa IoT air measurement devices, Seelze can determine the locations where the measurements will be made, taking into account local requirements. The Hawa Dawa PRO Dashboard used by Seelze enables additional insights on air quality in Seelze to be gained through a heatmap display – after all, information about the places where people are actually staying are crucial.

Karim Tarraf, CEO of Hawa Dawa, explains: “Many smaller to medium-sized cities are in the situation of Seelze, that there are no public measuring stations. The decision-makers do not have up-to-date information on the impact on air quality caused by traffic and other issuers. We believe that local air quality facts are a prerequisite for taking effective action against air pollution and protecting the population. Here, mere measurements are not sufficient, but it is imperative to analyse the data in context. We are pleased to support the city of Seelze in this project.”

Do the positive effects of the Corona Lock-Down offset the health issues caused by the pandemic?

A deeper analysis for Munich

The COVID-19 pandemic has infected about 13 million people and claimed more than 550 thousand deaths worldwide by 14 July 2020. It has been reported in research that high air pollution may be “one of the most important contributors to deaths from COVID-19”. Studies show a positive correlation between particulate matter and nitrogen dioxide to health damage and, more specifically, to diseases related to the lungs like pneumonia, which makes people suffering from these ailments more susceptible to COVID 19. On the other hand, due to the lockdown measures, significant improvement in air quality has been witnessed. Read more

Hawa Dawa provides data-based decision-making platform to reduce traffic-induced emissions in Mainz

Better urban air quality does not need drastic measures – but a meaningful database for decisions

Hawa Dawa has been commissioned by Stadtwerke Mainz with an innovative and result-driven project: creating a sustainable data-based decision-making basis. Hawa Dawa will propose stepped measures to improve urban air quality based on their projected impact on air quality, applying data-based analyses, and forecasts. For this purpose, an intelligent infrastructure for collecting environmental and traffic data as well as a data platform for evaluation is established. Read more

The long overdue paradigm shift towards a healthy, carbon neutral economy starts with cleaning our air

Air quality management – a fascinating lineage

I grew up in Cairo. A city that shows all the typical traits of an emerging economy when it comes to air quality and health. I grew up in a household of doctors, who spent their lifetime researching the delicate relationship between the air we breathe and our health. Here is a paper co-written by my dad for The Lancet Journal on the “Effect of nitrogen dioxide and sulfur dioxide on airway response of mild asthmatic patients to allergen inhalation” written back in 1998. So imagine you grow up seeing and hearing about the “Black Cloud” of Cairo and the rise of patient visits in my parents’ clinic around the dinner table. Or discussions on best treatment options for patients during the long drives towards the Egyptian Red Sea coast with its windy fresh air. Thus, I always understood the topic of air pollution within a context – the context of bad health indicators, exacerbated symptoms, increased healthcare expenditures and overall reduced life quality. Read more

Municipalities at the Forefront of Air Quality: Interview with Karim Tarraf, CEO of Hawa Dawa

In the days of Covid-19, air quality is a topic in the media, too. Municipalities are often pioneers in pushing for improvements. Decisions must be made in complex social contexts and measures must be integrated into larger plans.
Here’s an interview with Karim Tarraf, CEO of Hawa Dawa, in which he comments on the following topics:
  • How can the increasing importance of air quality data be explained?
  • Why are the available measurements and data usually insufficient?
  • What does cooperation with cities look like?

(The complete interview is available in German only)

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NO2 concentrations during the lockdown in Munich

I have recently heard people uttering disappointment regarding the rather small effect they have observed at official measurement stations in Munich during the time of the lockdown due to the coronavirus. Looking at the raw hourly measurement traces at different locations in and around Munich, we can see a very clear drop during the initial phase of the lockdown, with concentrations coming up again after that. So we decided to take a deeper look. We considered impacts from weather conditions, season-specific influences as well as mobility behaviour. Read more