WORCC-PMOD/WRC quality assured aerosol optical depth and Ångström exponent for Ny-Ålesund GAW station (2002- present)

<p>WORCC-PMOD/WRC quality assured aerosol optical depth and &Aring;ngstr&ouml;m exponent for Ny-&Aring;lesund GAW station (2002- present)</p> <p>Aerosol optical&nbsp; depth (AOD) measurements have been performed within the frame of Global Atmospheric Watch Precision Filter Radiometer (GAW-PFR) network in Ny-&Aring;lesund (79N,11E) since 2002. &nbsp;The measurements are performed from March to October, with PFR (PrecisionFilterRadiometer) instruments provided by Physikalisch-Meteorologisches Observatorium Davos, World Radiation Center (PMOD/WRC). The solar tracker and&nbsp; infrastructure&nbsp; are provided by provided by NILU(Norsk institutt for luftforskning) in collaboration with the&nbsp; Norwegian Polar Institute.</p> <p>PFR manufactured by PMOD/WRC is a temperature stabilized instrument at 20^o 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 instrument is calibrated in yearly bases against the WMO-AOD reference at PMOD/WRC during the polar winter. The operation is done remotely by PMOD/WRC with the installation and onsite maintenance (cleaning, alignment adjustments) done by personnel of Norwegian Polar Institute and NILU in collaboration with PMOD/WRC.</p> <p>The processing and quality assurance of the data is done following&nbsp; the&nbsp; protocols of&nbsp; World Optical depth Research and Calibration Center (WORCC, PMOD/WRC) (2018), and the data are submitted to the WDCA database (EBAS-NILU) as hourly mean AOD and AE values. This dataset contains the high-resolution data (1 min) cloud screened and quality assured since 2002. The provided &Aring;ngstr&ouml;m exponent is retrieved from the 4 wavelengths.</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>SUN_PFR_AOD_AE_V1.0.dat : AOD and AE for the period 2002-2021</p> <p>Lunar_PFR_AOD_AE_V1.0.dat : AOD and AE for the period 2018-2021</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>KN: &nbsp;Calibration, operation, and processing since 2014, WORCC quality assurance protocols, quality assurance of the presented dataset</p> <p>KS: , WORCC quality assurance protocols, consulting on quality assurance of the presented dataset</p> <p>WC: calibration, operation, and processing 2002- 2014</p> <p>NS: operation and processing 2005- 2012</p> <p>HGH: principal &nbsp;investigator&nbsp; of hosting&nbsp; institute NILU</p> <p>SK: principal &nbsp;investigator &nbsp;of hosting&nbsp; &nbsp;institute&nbsp; NILU</p> <p>Acknowledgement: Special&nbsp; thanks&nbsp; the&nbsp; personnel&nbsp; of&nbsp; the&nbsp; Norwegian Polar Institute&nbsp; at&nbsp; Ny-&Aring;lesund for&nbsp; all&nbsp; valuable the&nbsp; technical&nbsp; support&nbsp; for&nbsp; the&nbsp; solar and&nbsp; lunar&nbsp; measurements.</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>1. Kazadzis, S., Kouremeti, N., Nyeki, S.<em>, et al.</em> (2018) The World Optical Depth Research and Calibration Center (WORCC) quality assurance and quality control of GAW-PFR AOD measurements 10.5194/gi-7-39-2018 <a href="https://gi.copernicus.org/articles/7/39/2018/">https://gi.copernicus.org/articles/7/39/2018/</a></p> <p>&nbsp;</p>