Homogeneous temperature data record derived from 13 years of IASI data using an artificial neural network

Bouillon et al. (2022) recently designed a neural network to retrieve atmospheric temperatures from the IASI radiance data. This new temperature data record is validated against other datasets and a good agreement is shown. Trends were computed from this new temperature dataset over the 2008–2020 period. A general warming of the troposphere, more important at the poles, was found. In the stratosphere, the paper found that temperatures globally decrease everywhere, except at the South Pole as a result of the ozone layer recovery and a sudden stratospheric warming in 2019. The cooling is more pronounced in the equatorial upper stratosphere.

Zonal temperature trends for the period 2008–2020 computed with the outputs of the ANN. Grey areas correspond to trends that are not statistically significant.

More news

Ethylene industrial emitters seen from space

Over the past decade, significant progress has been made in improving the monitoring of the Earth’s atmosphere and our understanding of the impact that human activities have on air pollution. IASI/Metop is one of these satellite instruments capable of mapping the chemical composition of the atmosphere globally and in near-real time. In a recent study, […]

How did ozone pollution evolve during the COVID-19 lockdown of spring 2020? 

In the boreal spring of 2020, worldwide measures for curbing the spread of the COVID-19 virus have led to unprecedented and abrupt lockdowns in transportation and industry. They have led to sharp decrease of emissions of anthropogenic pollutants that induced significant changes in the composition of the atmosphere from city to hemispheric scale. Using an […]

Humidity levels to determine future liveability in the Arabian Peninsula

Human survivability in hot regions does not depend only on temperature, but also on humidity levels in ambient air. In fact, the body’s ability to shed heat is diminished when the air around it is saturated with humidity. The wet bulb temperature (also called heat stress) is the temperature of the air when it is […]

Search