title: Comparison of columnar water-vapor measurements from solar transmittance methods.
abstract: In the fall of 1997 the Atmospheric Radiation Measurement program conducted a study of water-vapor-abundance-measurement at its southern Great Plains site. The large number of instruments included four solar radiometers to measure the columnar water vapor (CWV) by measuring solar transmittance in the 0.94-mum water-vapor absorption band. At first, no attempt was made to standardize our procedures to the same radiative transfer model and its underlying water-vapor spectroscopy. In the second round of comparison we used the same line-by-line code (which includes recently corrected H(2)O spectroscopy) to retrieve CWV from all four solar radiometers, thus decreasing the mean CWV by 8-13%. The remaining spread of 8% is an indication of the other-than-model uncertainties involved in the retrieval.
authors: B
authors: B
authors: Schmid
authors: J J
authors: JJ
authors: Michalsky
authors: D W
authors: DW
authors: Slater
authors: J C
authors: JC
authors: Barnard
authors: R N
authors: RN
authors: Halthore
authors: J C
authors: JC
authors: Liljegren
authors: B N
authors: BN
authors: Holben
authors: T F
authors: TF
authors: Eck
authors: J M
authors: JM
authors: Livingston
authors: P B
authors: PB
authors: Russell
authors: T
authors: T
authors: Ingold
authors: I
authors: I
authors: Slutsker