The far-infrared spectroscopy of the troposphere (FIRST) project

Mlynczak, M. G.; Johnson, David G.; Bingham, Gail E.; Jucks, K. W.; Traub, W. A.; Gordley, L. L.; Yang, Ping

doi:10.1117/12.579063

Cited by 8 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This can be realized using a high-resolution infrared spectrometer (hyperspectrometer), which is capable of separating the two signals spectrally. Current state-of-the-art instruments include the Far-Infrared Spectroscopy of the Troposphere (FIRST) (Mlynczak et al 2003), the Radiation Explorer in the Far Infrared (REFIR) (Palchetti et al 2005), the Scanning High-resolution Interferometer Sounder (S-HIS) (Revercomb et al 1998), and the Tropospheric Airborne Fourier Transform Spectrometer (TAFTS) (Canas et al 1997). Among these hyperspectrometers, FIR coverage have been devised for TAFTS, REFIR, and FIRST [see Harries et al (2008) for a review].…”

Section: Introductionmentioning

confidence: 99%

Measuring Stratospheric H2O with an Airborne Spectrometer

Shahabadi

Huang

2014

Journal of Atmospheric and Oceanic Technology

View full text Add to dashboard Cite

This study examines the ability of an infrared spectral sensor flying at the tropopause level for retrieving stratospheric H 2 O. Synthetic downwelling radiance spectra simulated by the line-by-line radiative transfer model are used for this examination. The potential of high-sensitivity water vapor retrieval is demonstrated by an ideal sensor with low detector noise, high spectral resolution, and full infrared coverage. A suite of hypothetical sensors with varying specifications is then examined to determine the technological requirements for a satisfactory retrieval. This study finds that including far infrared in the sensor's spectral coverage is essential for achieving accurate H 2 O retrieval with an accuracy of 0.4 ppmv (1-sigma). The uncertainties in other gas species such as CH 4 , N 2 O, O 3 , and CO 2 do not significantly affect the H 2 O retrieval. Such a hyperspectral instrument may afford an advantageous tool, especially for detecting small-scale lower-stratospheric moistening events.

show abstract

Section: Introductionmentioning

confidence: 99%

Measuring Stratospheric H2O with an Airborne Spectrometer

Shahabadi

Huang

2014

Journal of Atmospheric and Oceanic Technology

View full text Add to dashboard Cite

show abstract

“…THz radiation propagates well through cloth, dust and fog 1,2,3 . Sensing in this range is proving to be particularly useful to determine internal characteristics of materials, in the search for drugs, mines and explosive materials.…”

Section: Introductionmentioning

confidence: 99%

Selective spectral detection of continuum terahertz radiation

et al. 2010

View full text Add to dashboard Cite

The knowledge of THz continuum spectra is essential to investigate the emission mechanisms by high energy particle acceleration processes. Technical challenges appear for obtaining selective spectral sensing in the far infrared range to diagnose radiation produced by solar flare burst emissions measured from space as well as radiation produced by high energy electrons in laboratory accelerators. Efforts are been carried out intended for the development of solar flare high cadence radiometers at two THz frequencies to operate outside the terrestrial atmosphere (i.e. at 3 and 7 THz). One essential requirement is the efficient suppression of radiation in the visible and near infrared. Experimental setups have been assembled for testing (a) THz transmission of "low-pass" filters: rough surface mirrors; membranes Zitex G110G and TydexBlack; (b) a fabricated 2.4 THz resonant grid band-pass filter transmission response for polarization and angle of incidence; (c) radiation response from distinct detectors: adapted commercial microbolometer array using HRFZ-Si window, pyroelectric module and Golay cell; qualitative detection of solar radiation at a sub-THz frequency has been tested with a microbolometer array placed at the focus of the 1.5 m reflector for submillimeter waves (SST) at El Leoncito, Argentina Andes.

show abstract

“…Following that the instrument was adapted to operate from high-altitude ground-based sites to take measurements of the downwelling radiation, where the atmosphere is highly transparent to perform sounding in the FIR. 2006; Bingham et al 2005;Mlynczak et al 2005). FIRST is a FTS with a demonstrated spectral coverage of 50 cm −1 to cm −1 (200 µm to 5 µm) and a nominal resolution of 0.625 cm −1 .…”

mentioning

confidence: 99%