Mauna Loa Atmospheric Baseline Observatory is located in the United States, specifically in Hawaii. It is a scientific research station that is responsible for measuring the concentration of carbon dioxide in the Earth's atmosphere. Here is a breakdown of the location and purpose of the Mauna Loa Atmospheric Baseline Observatory:

Location:
- Mauna Loa is a volcano located on the Big Island of Hawaii.
- The observatory is situated at an elevation of 11,135 feet on the northern slope of the volcano.
- The location was chosen because it is remote and has minimal local sources of pollution that could affect the measurements.

Purpose:
- The observatory was established in 1957 by the National Oceanic and Atmospheric Administration (NOAA) to measure the concentration of carbon dioxide in the Earth's atmosphere.
- The measurements are taken continuously and have provided the longest continuous record of atmospheric carbon dioxide concentration in the world.
- The data collected at the observatory is used to track global trends in carbon dioxide concentration and to inform policy decisions related to climate change.

In summary, the Mauna Loa Atmospheric Baseline Observatory is a scientific research station located in Hawaii that is responsible for measuring the concentration of carbon dioxide in the Earth's atmosphere. Its remote location and continuous measurements have provided valuable data for tracking global trends in carbon dioxide concentration and informing policy decisions related to climate change.

Carbon dioxide measured at the Mauna Loa Atmospheric Baseline Observatory, Hawaii, run by the US National Oceanic and Atmospheric Administration (NOAA), peaked for 2022 at 421 parts per million in May