The rise in atmospheric greenhouse gases is the primary driver of global warming. Closely monitoring the chemical composition and physical properties of the atmosphere is therefore critical to understanding climate change. However, the broad variety of monitoring methods often makes it difficult to identify global climate trends due to noncomparable datasets.
Our atmosphere section covers the metrological contribution to support in situ observations of the Global Climate Observing System Atmospheric Essential Climate Variables (ECVs).

The observations include measurements of the atmospheric composition (e.g. greenhouse gas, ozone and aerosol observations) and physical properties of surface and upper-air atmosphere (e.g. temperature, pressure, water vapour and wind speed and direction observations). This metrological contribution − through traceable reference standards − aims to ensure accurate, stable and coherent observation datasets. As a result, we expect worldwide comparable data to become available, facilitating the identification of long-term climate trends and, in turn, the implementation of effective mitigation strategies for those trends.

Case Studies

Examples of measurement science for atmosphere can be found in the selected case studies below:

New Arctic Meteo in-situ calibration

Providing the traceability to the SI units needed to ensure globally comparable measurements, even in the most remote... SEE MORE

Forecasting snow-related hazards

The stability of snow cover in mountain regions is highly dependent on the weather – local conditions, for example, w... SEE MORE

Improved Climate Change Monitoring

Around the world, automatic weather stations measure parameters including temperature and humidity, with networks gat... SEE MORE

Weather Data for Climate Change

The World Meteorological Organisation (WMO), a specialised agency of the United Nations, oversees global monitoring o... SEE MORE