NP
Nonlinear Processes in Geosciences

Nonlinear Processes in Geosciences

NP Interviews: the newly elected NP Division President François Schmitt

March 4, 2020
NP Interviews: the newly elected NP Division President François Schmitt
The newly elected NP Division President François Schmitt.

Today’s NP Interviews hosts the newly elected NP Division President François Schmitt. François has a PhD degree from Université Pierre et Marie Curie in Paris (1993), in atmospheric turbulence, and an Habilitation degree from the same university (2001). He has stayed in Belgium during 6 years as a post-doc, working in meteorology and in fluid mechanics. He is CNRS researcher in Wimereux (Nor ...[Read More]

The 2020 extra-tropical monster cyclones and their (possible) relations with climate change

February 18, 2020
The 2020 extra-tropical monster cyclones and their (possible) relations with climate change
The satellite image shows storm Uta (name chosen by the Freie University in Berlin) an incredibly large vortex spiraling close to Iceland.

On February 9th, a British Airways Boeing 747 landed in London Heathrow airport just four hours and 56 minutes after its take-off in JFK, New York, setting the shortest flight-time for non-supersonic jets over this route. The jumbo jet took advantage of the fast upper-tropospheric winds associated with an exceptionally strong jet-stream which created tail winds of about 400km/h. Over the United Ki ...[Read More]

NPG Paper of the Month: “On fluctuating momentum-exchange in idealised models of air-sea interaction”

February 3, 2020
NPG Paper of the Month: “On fluctuating momentum-exchange in idealised models of air-sea interaction”
Probability density function of the energy (normalized so that the average is unity for each variable) lost by the atmosphere and gained by the ocean at t=300 and averaging time τ=0, atmosphere full-line, ocean dashed-line, and for averaging time τ=100, atmosphere dotted-line, ocean dashed-dotted-line. All are clearly non-Gaussian. (Source: A. Wirth, On fluctuating momentum exchange in idealised models of air–sea interaction, Nonlin. Processes Geophys., 26, 457–477, https://www.nonlin-processes-geophys.net/26/457/2019/. License: https://creativecommons.org/licenses/by-nc-nd/4.0/.

This month the NPG Paper of the Month award is achieved by Achim Wirth for his paper “On fluctuating momentum-exchange in idealised models of air-sea interaction” (https://www.nonlin-processes-geophys.net/26/457/2019/). Achim tells us about the importance of the results achieved with this paper for investigating the energy coupling between the ocean and the atmosphere. Achim obtained his PhD at th ...[Read More]

Why Bushfires raged out of control across Australia?

January 22, 2020
Why Bushfires raged out of control across Australia?
A diagram showing how pyrocumulonimbus clouds are formed. Credits: Bureau of Meteorology, Victoria.

Australian wildfires have burned an impressively large surface and caused the death of at least 24 citizens as well as of numerous animals. This immense disaster raises questions about its linkage with climate change, the possibility of controlling these events and the future of Australian wildlife ecosystems. While the first question will be addressed by soon to come attribution studies, and the ...[Read More]