Nikolay Koldunov

@oceanographer.bsky.social

776 Followers 897 Following

Oceanographer, climate and ocean modeler, interested in ML for climate and LLMs. Senior scientist at AWI. Working on FESOM2 unstructured ocean model, km-scale climate modelling, data visualisation. More info: https://koldunovn.github.io/

Mean July 2-m air temperature (1991-2020). (a) ERA5 reanalysis. (b) LLM GPT-5 predictions. Both panels are shown on a 1° grid.

This image is a global visualization of aerosol distributions on September 5, 2020, at 00:00 UTC. It represents different types of aerosols using a color-coded scheme:
• Red represents dust (du), primarily visible over arid regions like the Sahara Desert and extending into the Atlantic.
• Blue indicates sea salt (ss), prominent over the oceans, particularly in stormy regions.
• Green signifies carbonaceous aerosol (ca), which is associated with biomass burning and pollution, visible over regions like the Amazon, Central Africa, and parts of Southeast Asia.
• Yellow shows sulfuric aerosol (su), often linked to volcanic emissions and industrial activity.

The image is overlaid on a world map with latitude and longitude markers. The transparency of the colors varies to indicate concentration levels, with fully transparent areas representing minimal aerosol presence and fully opaque areas representing maximum concentrations. The right-hand legend provides a scale for interpreting the aerosol concentrations in milligrams per square meter.

The maximum 2m-temperature during the peak heatwave period (July 25, 2019) over France for the different storyline experiments (top panels: a, b, c). The bottom chart illustrates the hourly maximum 2m-temperature from the different experiments for the Paris region inside the black dotted box (48.5-49°N and 2.0-3.0°E). This comparison highlights the varying intensity of the heatwave across different climates.