Milankovich cycles consist of 3 different variations of cycles the first one is orbit which changes the earth’s orbit from spherical to elliptical this happens every 100 thousand years this changes the earth’s solar input. During the elliptical years the summers are very hot and the winters are very cold however when it is the spherical the weather is normal there is also the wobble axis wee the earth’s axis wobbles so the hemispheres are facing towards the sun this heats up the planet this happens over a 21 thousand years . The final part of Milankovich cycles is tilt the earth’s axis is tilted at 23.5° this changes over 41 thousand years between 22° and 24.5° this affected the solar input especially in highest latitudes . Sometimes the wobble and the tilt happen at the same time this creates extreme weathers. These are natural causes are long-term.
Volcanoes and cosmic cause’s climate change are short term. Volcanoes cause global cooling this happens due to ash clouds blocking the sunlight this causes the earth to cool down to extreme temperatures The 1815 eruption of Tambora in Indonesia blanketed the atmosphere with ash this caused a year without summer in London. The major eruptions eject materials into the stratosphere. The sulfur dioxide forms a haze of sulfate aerosols, which reduces the amount of sunlight received at earth’s surface. Cosmic rocks have a similar impact as the volcanoes as it causes ash clouds when it hits earth’s surface.
The final part is variation solar output is sunspots. Sunspots are storms on the sun’s surface that are marked by intense magnetic activity and play host to solar flares and hot gassy ejections from the sun’s corona. Scientists believe that the number of spots on the sun cycles over time, reaching a peak every 11 years or so. Some people say that Sunspot activity overall