WORCC-PMOD/WRC quality assured aerosol optical depth and Ångström exponent for Marambio GAW-PFR station (2005- 2016)

WORCC-PMOD/WRC quality assured aerosol optical depth and Ångström exponent for Marambio GAW-PFR station (2005-2016)

Aerosol optical depth (AOD) measurements have been performed within the frame of Global Atmospheric Watch Precision Filter Radiometer (GAW-PFR) network in Marambio (MBI) (64.24 S, 56.62 E, 205 m) since 2005. The measurements are performed from August-April, with a PFR (PrecisionFilterRadiometer) instrument owned by Finnish Meteorological Institute (FMI). The solar tracker and infrastructure are provided by FMI in collaboration with the Servicio Meteorológico Nacional Argentina (SMN).

PFR manufactured by PMOD/WRC is a temperature stabilized instrument at 20o C equipped with four narrow band interference filters with nominal centroid wavelengths 368 nm, 412 nm, 500 nm and 862 nm and bandpass (fullwidth half maximum) 4 nm for 368 nm channel and 5 nm for the rest. The instruments are calibrated in yearly bases against the WMO-AOD reference (GAWPFR-TRIAD) at PMOD/WRC during the polar winter. The operation is done remotely by FMI and PMOD/WRC with the installation and onsite maintenance (cleaning, alignment adjustments) done by personnel of FMI and SMN.

The processing and quality assurance of the data is done following the protocols of World Optical depth Research and Calibration Center (WORCC, PMOD/WRC) (Kazadzis et al., 2018) and are submitted to the WDCA database (EBAS-NILU) as hourly mean AOD and AE values. This dataset contains high-resolution data (1 min) and daily mean values of cloud screened and quality assured since 2005. The provided Ångström exponent is retrieved from the 4 wavelengths.

version: v1 (03-Feb-2005 - 06-May-2016)

Contributions:

KN: Calibration, operation, and processing since 2005, WORCC quality assurance protocols, quality assurance of the presented dataset

WC: calibration, operation, and processing 2005-2014

AV: site researcher, operation and maitenance 

KS: consulting on WORCC PMOD/WRC quality assurance protocols