Instrument : Atmospheric Emitted Radiance Interferometer (AERI)

Instrument Categories
Radiometric

AERI

General Overview

The atmospheric emitted radiance interferometer (AERI) is a ground-based instrument that measures the downwelling infrared radiance from the Earth’s atmosphere. The observations have broad spectral content and sufficient spectral resolution to discriminate among gaseous emitters (e.g., carbon dioxide and water vapor) and suspended matter (e.g., aerosols, water droplets, and ice crystals). These upward-looking surface observations can be used to obtain vertical profiles of tropospheric temperature and water vapor, as well as measurements of trace gases (e.g., ozone, carbon monoxide, and methane) and downwelling infrared spectral signatures of clouds and aerosols.

The AERI is a passive remote sounding instrument, employing a Fourier transform spectrometer operating in the spectral range 3.3–19.2 μm (520–3020 cm-1) at an unapodized resolution of 0.5 cm-1 (max optical path difference of 1 cm). The extended-range AERI (ER-AERI) deployed in dry climates, like in Alaska, have a spectral range of 3.3–25.0 μm (400–3020 cm-1) that allow measurements in the far-infrared region. Typically, the AERI averages views of the sky over a 16-second interval and operates continuously.

Output Value-Added Products

This instrument is an input to the following value-added products, which provide improved measurements or derived quantities.

  • aeri01prof3feltz : Profiles of temperature and water vapor physically retrieved from the AERI spectra
  • aerich1nf1turn : AERI ch. 1 radiance data, with uncorrelated random error (noise) filtered out
  • aerich2nf1turn : AERI ch. 2 radiance data, with uncorrelated random error (noise) filtered out
  • aerilblclouds : AERI: Line-by-Line comparison model, clouds
  • aerilbldiff : AERI: LBLRTM spectral residuals
  • aerilbldiffls : AERI: LBLRTM spectral residuals, w/ scaled (lssonde) sonde input
  • aerilbldiffss : AERI: LBLRTM spectral residuals, w/ scaled (lbsonde) sonde input
  • aeriprof : AERI: profiles of temperature and mixing ratio
  • aeriprof3feltz : Profiles of temperature and water vapor physically retrieved from the AERI spectra
  • gaeriprof : AERI: temperature and mixing ratio profiles, AERI & GOES spectra
  • qmeaerilbl : QME: derived AERI vs. LBRTM-resid. stats as f of bin, process, channel
  • qmeaerilblls : QME: derived AERI vs. LBLRTM-resid. stats w/scaled (lssonde) sonde input
  • qmeaerilblss : QME: derived AERI vs. LBLRTM-resid. stats w/scaled (lblsonde) sonde input
  • qmeaeriprof : QME: derived AERI, tower, sonde profiles of temp & water vapor

Output Datastreams

  • aeri01ch1 : Atmospheric Emitted Radiance Interferometer (AERI) 01: ch. 1 data
  • aeri01ch2 : Atmospheric Emitted Radiance Interferometer (AERI) 01: ch. 2 data
  • aeri01summary : Atmospheric Emitted Radiance Interferometer (AERI) 01: summary data
  • aerich1 : Atmospheric Emitted Radiance Interferometer (AERI): channel 1 data
  • aerich2 : Atmospheric Emitted Radiance Interferometer (AERI): channel 2 data
  • aeriengineer : Atmospheric Emitted Radiance Interferometer (AERI): engineering data
  • aerisummary : Atmospheric Emitted Radiance Interferometer (AERI): summary data

Primary Measurements

The following measurements are those considered scientifically relevant.

Locations

North Slope Alaska
NSAC1 Browse Data Browse PlotsCentral Facility, Barrow AK
Southern Great Plains
SGPB1 Browse DataHillsboro, KS (Boundary) retired
SGPB4 Browse DataVici, OK (Boundary) retired
SGPB5 Browse DataMorris, OK (Boundary) retired
SGPB6 Browse DataPurcell, OK retired
SGPC1 Browse Data Browse PlotsCentral Facility, Lamont, OK
Tropical Western Pacific
TWPC1 Browse DataCentral Facility, Manus I., PNG retired
TWPC2 Browse Data Browse PlotsCentral Facility, Nauru Island retired
TWPC3 Browse Data Browse PlotsCentral Facility, Darwin, Australia retired
ARM Mobile Facility
FKBM1 Browse Data Browse PlotsBlack Forest, Germany retired
GRWM1 Browse Data Browse PlotsGraciosa Island, Azores, Portugal retired
HFEM1 Browse Data Browse PlotsShouxian, Anhui, China retired
MAOM1 Browse Data Browse PlotsManacapuru, Amazonas, Brazil; AMF1
NIMM1 Browse Data Browse PlotsNiamey, Niger retired
OLIM1 Browse Data Browse PlotsOliktok Point, Alaska
PGHM1 Browse Data Browse PlotsARIES Observatory, Nainital, Uttarkhand, India retired
PVCM1 Browse Data Browse PlotsHighland Center, Cape Cod MA; AMF 1 retired
PYEM1 Browse Data Browse PlotsPoint Reyes, CA retired
TMPM1 Browse DataU. of Helsinki Research Station (SMEAR II), Hyytiala, Finland; AMF2
 retired = Originating instrument has been retired at this location

Contact(s)

Jonathan Gero
University of Wisconsin
608-265-2335
jonathan.gero@ssec.wisc.edu

Brian Ermold
Pacific Northwest National Laboratory
Developer
(509) 375-2277
brian.ermold@pnnl.gov

Krista Gaustad
Pacific Northwest National Laboratory
Developer
(509) 375-5950
krista.gaustad@pnnl.gov

Annette Koontz
Pacific Northwest National Laboratory
Developer
(509) 375-3609
annette.koontz@pnnl.gov

Denny Hackel
University of Wisconsin
associate
(608) 770-1485
dennyhackel@ssec.wisc.edu

Raymond Garcia
University of Wisconsin
software
(608) 262-8439
ray.garcia@ssec.wisc.edu