Aura (satellite)
Overview
The Aura is a multi-national NASA satellite mission, launched in 2004, with the primary objective of studying the Earth's atmosphere. The satellite carries four scientific instruments designed to monitor atmospheric chemistry and dynamics, contributing to our understanding of climate change and air quality on a global scale.
Mission Objectives
Aura's mission is centered around the study of the Earth's atmosphere, with a focus on the following key areas:
1. Understanding the processes that connect local air quality with global atmospheric composition. 2. Studying the recovery of the ozone layer as a result of policy changes. 3. Examining the impact of changes in the Earth's radiation balance due to changes in atmospheric composition.
Instruments
Aura carries four main instruments:
1. OMI: This instrument measures the global distribution of ozone and other trace gases, which play key roles in the atmospheric chemistry and climate. 2. MLS: MLS measures temperature, humidity, and the concentrations of ozone, chlorine compounds, and many other chemical constituents in the stratosphere and mesosphere. 3. TES: TES measures tropospheric ozone, and its data is used to improve our understanding of lower-atmosphere chemistry and its effects on global climate change. 4. HIRDLS: HIRDLS measures temperature, ozone, water vapor, and aerosols in the upper troposphere, stratosphere, and mesosphere.
Data Collection and Analysis
Data from Aura's instruments is used in a variety of ways to study the Earth's atmosphere. The data is analyzed by scientists around the world, contributing to a wide range of research projects. The data is also used to improve models of atmospheric chemistry and climate, helping to predict future changes and guide policy decisions.
Impact and Significance
The Aura mission has significantly contributed to our understanding of the Earth's atmosphere. Its data has been used in numerous scientific studies, leading to new insights into atmospheric chemistry, the ozone layer, and climate change. The mission has also had a significant impact on policy decisions related to the environment and climate change.