Autor/es reacciones

María José Sanz

Scientific Director of the BC3 Basque Centre for Climate Change

Attributions are always tricky. Generally speaking, the jet stream, because of the changes we are seeing, due to climate change, is having more pronounced undulations. DANAS are areas of low pressure that are isolated from the jet stream. Although they are frequent, they happen more in winter, when these undulations occur.

In addition, as we have more water in the atmosphere right now because the oceans are warmer due to the increase in temperatures, this factor is added to the previous one and causes intense phenomena.

We will have to see what conditions have occurred, where this isolation of low pressures has taken place or the amount of evaporation, among other issues.

There are also atmospheric rivers, certain currents in the atmosphere that transport water vapour. There are studies that indicate that extreme phenomena in California were related to this factor.

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