Long-path high-resolution atmospheric transmission measurements: comparison with lowtran 3B predictions: comments

Ben-Shalom, A.; Devir, Adam D.; Lipson, S. G.; Oppenheim, Uri P.

doi:10.1364/ao.20.000171

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…(5) (6) Early experimental work carried out at NRL and EORD had shown that there is no model for the water continuum in the 4.5-5.51tm spectral region in the code.…”

Section: Introductionmentioning

confidence: 99%

Ground-to-space atmospheric transmittance measurements in the 3- to 5-μm and 8- to 12-μm spectral regions: comparison with LOWTRAN 7

et al. 1993

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The computer code LOWTRAN is widely and extensively used for the prediction of propagation of IR radiation through the atmosphere. The latest version of this code, LOWTRAN 7, is assumed to be the most elaborate and accurate one. Hence it was decided to test its validity by comparing its prediction for ground-to-space slant paths with actual transmittance measurements with the sun as a blackbody source. A good agreement between the theoretical predictions and the experimental results were obtained in the 8-12gm spectral region for all zenith angles between 90 and 60 (0 to 30 above the horizon) . In the 3-51,an spectral region some spectral discrepancy was observed though the value of the integrated measured transmittance agreed well with the predicted one. The reasons for this can be assumed to be in the new band model absorption parameters (in the 3-4pm region) and in the water continuum model (in the 4.4-5.2gm region).from EOSEAL) and a cirrus cloud model. The latest version (LOWTRAN 7 -1988)

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“…(5) (6) Early experimental work carried out at NRL and EORD had shown that there is no model for the water continuum in the 4.5-5.51tm spectral region in the code.…”

Section: Introductionmentioning

confidence: 99%

Ground-to-space atmospheric transmittance measurements in the 3- to 5-μm and 8- to 12-μm spectral regions: comparison with LOWTRAN 7

et al. 1993

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Atmospheric radiation: 1975–1983

Wiscombe¹

1983

Reviews of Geophysics

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Atmospheric absorption in laboratory measurements: a comparison between modtran3 and measurement

1998

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Errors can occur in laboratory measurements when the response of a bandpass-filtered radiometer extends into an atmospheric absorption region. Atmospheric models, such as modtran3, can be valuable tools that permit the optical measurements in these regions to be accurately analyzed, provided the models themselves are accurate. Comparisons of modtran3-predicted and laboratory-measured atmospheric transmittance have been made to help establish the validity of modtran3 for use in modeling short-path-length (a few meters or less), low-resolution optical effects over a wavelength range of 700-5700 nm. Comparisons include percentage differences, range of differences, and band-averaged differences. Good agreement is shown for all absorption bands except for the CO(2) band near 4300 nm. In general, the band-average differences are less than ~0.75% for all water bands. For the CO(2) band the modtran3 default CO(2) level is found to be inappropriate, and 610 parts per million in volume is found to give much better agreement with measurement.

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Long-path high-resolution atmospheric transmission measurements: comparison with lowtran 3B predictions: comments

Cited by 4 publications

References 3 publications

Ground-to-space atmospheric transmittance measurements in the 3- to 5-μm and 8- to 12-μm spectral regions: comparison with LOWTRAN 7

Ground-to-space atmospheric transmittance measurements in the 3- to 5-μm and 8- to 12-μm spectral regions: comparison with LOWTRAN 7

Atmospheric radiation: 1975–1983

Atmospheric absorption in laboratory measurements: a comparison between modtran3 and measurement

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