Climate change and the Earth’s magnetic field: is there a relationship between them?

The Earth’s magnetic field changes gradually and with varying intensity. However, There is little scientific evidence for the important relationships between magnetic poles and climate.

Therefore, the NASA’s Jet Propulsion Laboratory, devoted to climate change, a study to prove whether there is any relationship.

If we talk about the inversion of the magnetic pole, then it can be verified – thanks to a study Animal and plant fossils who lived on our planet during Another great reflection – that lasted for thousands of years and there were no major changes, even A.mocean sediment oyster From that time pointing out that Glacial activity remained stable. Thus, the sGeological and fossil records from previous overturns show nothing unusual, as potentially horrific events or major extinctions.

Regarding geomagnetic excursions, similar to reversals but of shorter duration and significant in magnetic field strength, nIt shows no evidence that the Earth’s climate has been significantly affected. notably by the last three trips of the magnetic field, nor by any trip events that have occurred in the last 2.8 million years.

Although there is some evidence of regional climate change over the period Lachamp event – Last geomagnetic trip – upon analysis Ice core in Antarctica and Greenland, that they It does not show any major changes.

Physical principles that do not indicate a link between the magnetosphere and climate change

Although there are electromagnetic currents in part of upper atmosphere From the Earth, the energy that drives the climate system in this region is, on average, a small part of all the energy that drives the climate system at the surface.

Changes in the polarity of the Earth’s magnetic field will not affect the climate For a basic reason: Air is not iron.

However, we can talk about iron that circulates in the atmosphere as a result of volcanic eruptions or that causes human activities, being a source of air pollution in some urban areas, however, Not an important component Our atmosphere and there is no known physical mechanism capable of linking atmospheric conditions on the Earth’s surface to electromagnetic currents in space.

On the other hand, Solar storms and their electromagnetic interactions affect only the ionosphere From the Earth, which extends from the atmosphere to space, brainIt has no effect on the troposphere or in lower stratosphere, Where the Earth’s climate originated.

What is the role of the magnetic field?

Our planet is surrounded by A large magnetic field is called the magnetosphere, who acts as a Shield protects the atmosphere Radiation, solar wind and any high-energy particle that comes from the sun.

The forces that generate this magnetic field are constantly changing, however, Earth’s magnetic poles Also varies gradually in location, even Reverse approximately every 300,000 years.

Because of these differences, some theories Stating that The magnetosphere contributes to global warming NS It could cause catastrophic climate change. However, The scientific world does not support this conjecture.

So when we talk about climate change, scientifically it shouldn’t be related to changes in the Earth’s magnetic field, so it shouldn’t be a cause for concern when compared to A large number of tons of greenhouse gases that our gases emitactivities.