NP
Nonlinear Processes in Geosciences

Climate

Is climate change making the weather more extreme?

September 11, 2020
Is climate change making the weather more extreme?
NOAA PSL weather forecasts of temperature anomaly at 850hPa (~1500m.a.s.l.) shows a deep negative anomaly on Central US, leading to snowfalls. Credits: NOAA.

Denver, Sept. 06: it is midday and Jonathan and Maria are sunbathing at City Park. They feel uncomfortable as the temperature has already reached 36°C. While they decide to go back home, their favoured weather app displays an unbelievable snowstorm watch for Tuesday Sept. 08. The forecast turns out to be rather accurate as all Colorado experiences one of the earliest snowstorms on record in Septem ...[Read More]

NPG Paper of the Month: “Correcting for model changes in statistical postprocessing – an approach based on response theory”

July 22, 2020
NPG Paper of the Month: “Correcting for model changes in statistical postprocessing – an approach based on response theory”
Mean square error (MSE) evolution between the different forecasts and their correction and reality. Credits: Demaeyer, J. and Vannitsem, S.: Correcting for model changes in statistical postprocessing – an approach based on response theory, Nonlin. Processes Geophys., 27, 307–327, https://doi.org/10.5194/npg-27-307-2020, 2020.

This month the NPG Paper of the Month award is achieved by Jonathan Deameyer and Stéphane Vannitsem for their paper “Correcting for model changes in statistical postprocessing – an approach based on response theory” (https://doi.org/10.5194/npg-27-307-2020). Jonathan did his PhD in statistical mechanics at the Université Libre de Bruxelles under the supervision of Pierre Gaspard and he is currentl ...[Read More]

NPG Paper Highlight: “Baroclinic and barotropic instabilities in planetary atmospheres: energetics, equilibration and adjustment”

July 9, 2020
NPG Paper Highlight: “Baroclinic and barotropic instabilities in planetary atmospheres: energetics, equilibration and adjustment”
License: Read, P., Kennedy, D., Lewis, N., Scolan, H., Tabataba-Vakili, F., Wang, Y., Wright, S., and Young, R.: Baroclinic and barotropic instabilities in planetary atmospheres: energetics, equilibration and adjustment, Nonlin. Processes Geophys., 27, 147–173, https://npg.copernicus.org/articles/27/147/2020/npg-27-147-2020.html, 2020.

Today’s our blog hosts a review article by the 2016 EGU Richardson medallist Peter Read, together with Daniel Kennedy, Neil Lewis, Hélène Scolan, Fachreddin Tabataba-Vakili, YixiongWang, Susie Wright, and Roland Young for the special issue of NPG celebrating 100 years of IUGG (https://npg.copernicus.org/articles/27/147/2020/npg-27-147-2020.html). One of the great achievements of the past 100 ...[Read More]

Is planting trees a feasible large-scale solution to mitigate climate change?

June 8, 2020
Is planting trees a feasible large-scale solution to mitigate climate change?

In the last few years it has become a common practice to compensate carbon dioxide (CO2) emissions by planting trees. This idea is simple and rooted on a very basic principle: trees get the energy of sunlight, and by photosynthesis they take water from the ground and CO2 from the air, releasing oxygen in the atmosphere. The CO2 is then stored in trees and surrounding soil. Tree planting efforts ar ...[Read More]