Long-term, high-resolution measurements of air quality, weather and radiation, from city streets to mountain peaks
Explore METER.AC
Turning data about natural processes into knowledge for science, business and society
About Us
Sensors, IoT devices, software and data platforms, designed and built in-house
Our ExpertiseNature Tech Ltd. is a small and medium-sized enterprise (SME) that provides information services, solutions, technologies, and consultancy in the fields of natural processes and phenomena, environmental measurements, and various practical areas of human life. The company develops specialized software systems, databases, and hardware products, including commercial representations, designs, and prototypes of specialized measuring equipment, communication and network devices, and infrastructure components for the Internet of Things. We also offer services in data processing, statistical analysis, and information modeling.
Our focus is on monitoring a wide range of natural processes in areas such as meteorology, urban air quality, and agriculture. The extensive data we collect over long periods, with high temporal and geospatial resolution, has established us as a regional leader in big data. We maintain our own server infrastructure, as well as in-house sensors and devices. Our expertise spans hardware design, software development, academic research, atmospheric sciences, and more.
Nature Tech is a spin-off of C.Lab at the University of Plovdiv “Paisii Hilendarski” and is a 100% privately owned company. It builds on more than a decade of research, engineering and field experience of its founding team.
The company’s founders have extensive experience in scientific research, academic lecturing, and various projects in IT, software development, data management, and modeling. Our journey began around 10 years ago with initiatives that brought our team together with academic researchers and volunteers for atmospheric chemistry studies, including the launch of stratospheric balloons up to 35 km above sea level. These ventures were carried out using devices developed in-house, some of which were later repurposed into new devices and products. This work provided us with first-hand experience in deploying a vast network of devices, meter.ac, a joint initiative of Nature Tech and C.Lab at the University of Plovdiv, developed with significant support from volunteers and academic researchers. Moreover, our group was driven to demonstrate the concept of an open monitoring network based on the IoT paradigm, bridging industry, citizen science, and academia. The experience gained over the past decade forms the foundation of our know-how, product development, and service offerings.
Our mission is to make reliable environmental data accessible and useful: by designing robust monitoring technologies, operating scalable data infrastructures, and turning measurements into knowledge for science, business, and society.
The Nature Tech team comprises individuals with interdisciplinary skills and a passion for discovery, problem-solving, and community and business outreach. Our specialists have expertise in a wide range of fields, including software and hardware engineering, computer science, data management, data mining, chemoinformatics, atmospheric chemistry, physics, and more.
We envision a future in which every community has access to accurate, real-time information about the environment it lives in.
We aim to be a leading regional provider of environmental monitoring technologies and data services, and to show that open monitoring networks built on the Internet of Things can connect industry, citizen science, and academia, helping people, businesses, and institutions make better, data-driven decisions for a sustainable future.
From sensors in the field to insights on the screen, we cover the full chain of environmental data
Initiatives that our team has co-founded, developed and supported
A joint initiative of Nature Tech and C.Lab at the University of Plovdiv
METER.AC is an open monitoring network that provides live, open-access atmospheric data with high spatial and temporal resolution. It was created to fill the gap in open environmental data in the region, with special attention to remote and mountain areas, and it relies on a strong community of volunteers who host and maintain many of its stations.
Members of the Nature Tech team have been at the core of METER.AC for about a decade. They designed its devices, developed its software and data infrastructure, and co-funded many of its activities.
Visit meter.ac Read the paperLow-power, maintenance-free devices measuring temperature, pressure, humidity, particulate matter (PM2.5, PM10), CO2, radon and radiation.
A growing network of stations across Bulgaria and neighbouring countries, from urban areas to high mountain sites.
A high-resolution gamma radiation monitor at one of the highest peaks in the Balkans, transmitting data over LoRa.
Measurements every few minutes and multi-year continuous records, published as open data and accessible via web and API.
Regular sky snapshots that complement the measurements with a visual record of weather conditions.
Volunteers host, configure and maintain stations, and contribute to hardware, software and data analysis.
Reference: Terziyski, A.; Tenev, S.; Jeliazkov, V.; Jeliazkova, N.; Kochev, N. METER.AC: Live Open Access Atmospheric Monitoring Data for Bulgaria with High Spatiotemporal Resolution. Data 2020, 5(2), 36. https://www.mdpi.com/2306-5729/5/2/36
Interested in our technologies, data or services? We would be glad to hear from you.