Remote sensing of pollutants. Computerized reduction of long-path absorption data. Final report

Technical Report · Mon Jul 01 04:00:00 EDT 1974

OSTI ID:7355104

Derr, V E; Ackley, M H; Post, M J; Calfee, R F

Atmospheric gaseous pollutants are very numerous in industrial regions. It is estimated that 25 or more pollutant molecules may be found in the atmosphere in significant quantities. The measurement of the concentration of each gas from the complex spectrum obtained by a long-path infrared spectrophotometer requires the fitting of trial spectra composed from a library of spectra. The fitting procedure adjusts the concentrations of the trial spectra until a ''best fit'' in a least-squares sense is produced. This report is a description of the physical, mathematical, and calculational principles and procedures for the use of a digital computer program to determine concentrations of atmospheric gases in a path of a few kilometers. Detailed instructions for the computer program and a library of spectra are provided. (GRA)

• Research Organization: National Oceanic and Atmospheric Administration, Boulder, Colo. (USA). Environmental Research Labs.
• OSTI ID: 7355104
• Report Number(s): PB-240168
• Country of Publication: United States
• Language: English

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500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
ALKANES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COMPUTER CALCULATIONS
CRYOGENIC FLUIDS
DATA PROCESSING
FLUIDS
FORTRAN
GASES
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METHANE
NITRIC ACID
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
POLLUTION
PROCESSING
PROGRAMMING LANGUAGES
REMOTE SENSING
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
VAPORS
WATER VAPOR