Jakarta, CNBC Indonesia – Earth’s light reportedly continues to dim. Reportedly this is due to climate change which is another threat in the world besides Covid-19.
This is revealed in existing research in Geophysical Research Letters. The earth is described as getting darker because of changes and changes in climate that occur naturally.
Researchers used earthshine data for two decades. The data was collected by the Big Bear Solar Observatory with a special type of telescope to view the Moon.
While Earthshine is defined as light that is reflected by the planet and emits a faint light on the surface of the Moon. It can be reflected from land, ice, clouds and the open sea on Earth.
The observatory could calculate earthshine 40% of the Earth, covering the Pacific and North America. Earthshine is best seen during the Crescent and Late Crescent phases.
The research team managed to analyze data on 800 nights from 1998 to 2017. According to them, there was indeed a small but significant decrease in light, quoted from Gizmodo, Tuesday (12/21/2021).
This activity changes from year to year. But the research team said the event was ‘quite dampening with the long-term decline that dominates the time series’.
They also reveal that the loss of light was due to a vanishing beginning in the Pacific. “The decrease in albedo (the proportion of incident light or surface-reflected radiation) was surprising when we analyzed data for the last three years of 17 years of near-flat albedo,” said researcher Philip Goode at the New Jersey Institute of Technology and lead author of the study.
For 20 years, there are two cycles of eclipses. The sun has an 11-year period of decreasing and increasing activity.
According to research, the dimming is not the Sun but the light of the Earth. “Our data do not support the argument for a detectable trace of Earth-reflection mechanism activity over the last two decades,” said Philip Goode.
(npb/roy)
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