New Delhi/Bengaluru: Indian researchers have found that the global Covid lockdown of 2020 had an impact on the Moon. A study was published in the peer-reviewed Monthly Notices: Letters of the Royal Astronomical Society. Our colleague Times of India has learned that an unusual drop in the moon's surface temperature was observed during the strict lockdown of April-May 2020. K Durga Prasad and G Ambili of the Physical Research Laboratory (PRL) have analyzed the night surface temperatures. At six different locations near the Moon – Oceanus Procellarum, Mare Serenitatis, Mare Imbrium, Mare Tranquillitatis and two locations on Mare Crisium. PRL Director Anil Bhardwaj said that this is an important work of our group. This is quite unique.
How to study?Using data from NASA's Chandrayaan (Lunar Reconnaissance Orbiter), researchers found that the Moon's temperature during the lockdown months was consistently 8-10 degrees lower (8-10 Kelvin) than in other years. Prasad told Times of India that we actually analyzed 12 years of data, but to maintain uniformity in the study, we used data of seven years (2017 to 2023), three years before the lockdown year 2020 and The three years that followed.
Researchers believe that the Moon's temperature has decreased due to the reduction in radiation emitted from the Earth during the lockdown. As human activities were significantly reduced, emissions of greenhouse gases and atmospheric particles (aerosols) also decreased, resulting in less heat being trapped and released back into the Earth's atmosphere.
significant changes in temperature
The researchers observed considerable variation in temperatures across locations and years. The lowest total temperature at Site-2 in 2020 was 96.2 K, while the highest total temperature at Site-1 in 2022 was 143.8 K. Generally, 2020 saw the coldest temperatures in most locations, while 2021 and 2022 saw a notable warming trend. Human activities resumed on Earth.
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K Durga Prasad explained that the Moon acts as an amplifier of the Earth's radiation signal. This unique global event provides us with a rare opportunity to see how changes in human activities on Earth may affect our nearest celestial neighbor. The research paper notes that since night-time surface activity of the Moon has been observed during the Covid lockdown, an unusual drop in temperature has been observed, hence the effects of other possible factors such as solar activity and seasonal flow variations were also examined. Has been. The results show that none of these factors have any impact on the observed signature, thus supporting our findings that it is entirely due to the Covid lockdown.