NASA’s Earth Radiation Budget Satellite is scheduled to reenter the atmosphere today
#NASAs #Earth #Radiation #Budget #Satellite #scheduled #reenter #atmosphere #today Welcome to Alaska Green Light Blog, here is the new story we have for you today:
In early January, NASA’s decommissioned Earth Radiation Budget Satellite (ERBS) is scheduled to reenter Earth’s atmosphere after nearly four decades in space. For 21 years, ERBS actively studied how the Earth absorbed and radiated energy from the Sun, and made measurements of stratospheric ozone, water vapor, nitrogen dioxide and aerosols.
On Thursday, January 5, the Department of Defense predicted the 5,400-pound satellite will reenter the atmosphere around 6:40 p.m. EST on Sunday, January 8, with an uncertainty of +/- 17 hours. NASA and the Department of Defense will continue to monitor re-entry and Update the predictions.
NASA expects most of the satellite to burn up as it makes its way through the atmosphere, but some components are expected to survive re-entry. The risk of harm to anyone on Earth is very small – about 1 in 9,400.
The ERBS spacecraft was launched on October 5, 1984 from the Space Shuttle Challenger and was part of NASA’s three-satellite Earth Radiation Budget Experiment (ERBE) mission. It carried three instruments, two to measure Earth’s radiant energy budget and one to measure stratospheric constituents, including ozone.
The energy budget, the balance between the amount of solar energy that the earth absorbs or radiates, is an important indicator of the health of the climate, and understanding it can also help reveal weather patterns. The concentration of ozone in the stratosphere plays an important role in protecting life on Earth from harmful ultraviolet radiation.
ERBS far exceeded its expected lifespan of two years and operated until its decommissioning in 2005. His observations helped researchers measure the impact of human activities on Earth’s radiation budget. NASA has continued to build on the success of the ERBE mission with projects including the current Clouds and the Earth’s Radiant Energy System (CERES) suite of satellite instruments.
The Stratospheric Aerosol and Gas Experiment II (SAGE II) on the ERBS carried out stratospheric measurements. SAGE II collected important data confirming that the ozone layer is declining worldwide. This data helped shape the international Montreal Protocol treaty, which led to a dramatic reduction in the use of ozone-depleting chlorofluorocarbons worldwide. Today, SAGE III collects data on the state of the ozone layer on the International Space Station.