AWARES ExOb Wiki

Mentor: K. Khosravianghadiklaei

The AERI is an operational infrared spectrometer that measures the downwelling infrared radiance from 3.3-19 µm (3020 to 520 1/cm) at 1/cm resolution. The AERI has approximately 2500 spectral channels for each of its two detectors. Like the microwave spectrum, the infrared spectrum also contains information on the vertical profile of temperature and humidity. Spectral observations from 612-713 1/cm and 2223-2260 1/cm (i.e., measurements from the 15 µm and 4.3 µm CO2 bands, respectively) have been used for temperature profiling, and observations from 538-588 1/cm and 1250-1350 1/cm (i.e., measurements from the wings of the rotational and 6.3 µm water vapor bands, respectively) for water vapor profiling. Additionally selected window channels provide information on ice cloud, as well as low-LWP (< 50 g/m2) liquid water cloud effective radius and cloud optical depth.

AERI-111 (right) at the JOYCE site (top of building 5.2 (IEK8), Research Center Jülich) next to ceilometer (middle) and TOPHAT (left)

Quicklooks of current data

The two plots show the radiance spectra as a function of wavenumber (1/cm) for each AERI receiver.

Top:

• RED: 675-680 1/cm (surface layer air temperature)
• BLUE: 985-990 1/cm (longwave window air temperature)
• GREEN: 2510-2515 1/cm (shortwave window air temperature)

Center

• BLACK: cooler current
• RED: detector temperature

Bottom

• RED: HBB (hot black body) temperature
• BLUE: CBB (calibration black body) temperature
• GREEN: support structure temperature
• BROWN: calibration ambient temperature
• NEUTRAL: air near black bodies temperaure
• YELLOW: interferometer second port temperature
• DARKBLUE: spare temperature
• PINK: outside air temperature