After two consecutive DANAs, we Spaniards look to the sky much more than before. We pay very close attention to weather forecasts and the arrival of possible extreme events. It’s not always about DANA. There are other phenomena, for example bombogenesis or explosive cyclogenesiswhich can also lead to heavy rain. More precisely, one of them is now approaching Spain, and we are expected to feel its effects next Saturday; but fortunately they will not be even remotely comparable to what has happened to DANA recently.
This is because, although bombing is moving towards Spain, it will stop and discharge mainly in United Kingdom. This is where you will experience its most intense side. To the west of the Iberian Peninsula it will arrive much weaker and, although it may leave some rain, it will not be heavy.
However, it is important to know these phenomena because in other cases they can cause much heavier rainfall in our country. This is not something new, far from it. But just as DANA scores have deteriorated, it wouldn’t be strange if Bombogenesis did the same. The more we know about them, the better.
What is bombogenesis?
Bombogenesis, also known as explosive cyclogenesis, does what its name promises. This is the generation of a cyclone by explosive means.
Cyclones are nothing more than storms. It’s just that in tropical areas they receive the first name, and in mid-latitudes – the second. Both refer to low pressure zone surrounded by winds that rotate counterclockwise in the northern hemisphere and clockwise in the southern hemisphere.
The formation of this low pressure zone is known as cyclogenesis. And when will it happen very quicklybecomes explosive cyclogenesis or bombogenesis. So what is considered fast? You could say that speed is relative, but there are standardized numbers. In particular, if the pressure drops not less than 24 hPa in 24 hourswe can talk about bombogenesis. However, if cyclogenesis occurs at lower latitudes, the figure 18-20 hPa in 24 hours.
Bombogenesis usually begins in Pacific or Atlantic Oceanpreferably in autumn or winter. In summer they are extremely rare.
What are the consequences?
The main consequences of bombogenesis are very strong wind. This is because wind is formed when there is pressure drops and air moves from areas of higher pressure to areas of lower pressure. If there is a sudden drop in pressure, there is also a sudden movement of air into that area.
In turn, this air movement favors cloud formationtherefore there is also a lot of rainfall here. In this case, both rainfall and the strongest winds will be dumped in the UK. There will only be light rain in Spain due to the effect this air movement has on our atmosphere.
Will there be more bombing due to climate change?
The effects of climate change are starting to look very good because of the way they are happening. certain weather events. For example, DANAs are nothing new, but rising sea temperatures have caused them to become much heavier due to rain. Does the same thing happen with bombogenesis?
The reality is that, according to modeling and research conducted with historical datait seems so.
In 2021, a group of scientists from Bar Ilan Universityfrom Israel, analyzed several episodes of bombogenesis in recent years and established their connection with climate change. Thus, they saw that, for example, bombogenesis taking place in the eastern Mediterranean in December 2010 could be related to climate change because ” Cold air advection from north to warm sea contributed significantly to the storm’s rapid intensification.”
On the other hand, that same year, an international team of climate scientists developed a series of models showing that human-caused climate change would intensify this type of weather event.
In short, although this time we will be free from the worst effects of bombogenesis, if we do nothing to stop climate change, we will become stronger and stronger. DANA has already shown us that this should be taken very seriously.
Source: Hiper Textual
