High Resolution Dynamics Limb Sounder (HIRDLS)
HIRDLS is an infrared limb-scanning radiometer measuring trace gases, temperature, and aerosols in the upper troposphere, stratosphere, and mesosphere. The instrument will provide critical information on atmospheric chemistry and climate. Using vertical and horizontal limb scanning technology, HIRDLS will provide accurate measurements with daily global coverage at high vertical and horizontal resolution.
HIRDLS Contributions to Understanding Stratospheric Ozone
The largest ozone depletions occur in the polar winter in the lower stratosphere. HIRDLS will retrieve high vertical resolution daytime and nighttime ozone profiles in this region.
HIRDLS Contributions to Understanding Air Quality
HIRDLS will measure ozone, nitric acid, and water vapor in the upper troposphere and lower stratosphere. With these measurements, scientists will be able to estimate the amount of stratospheric air that descends into the troposphere and will allow us to separate natural ozone pollution from man-made sources.
HIRDLS Contributions to Understanding Climate Change
HIRDLS will measure water vapor and ozone, both important greenhouse gases. The instrument is also able to distinguish between aerosol types that absorb or reflect incoming solar radiation. HIRDLS will be able to map high thin cirrus clouds that reflect solar radiation.