Data flow of spectral UV measurements at Sodankylä and Jokioinen

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Mäkelä , J S , Lakkala , K , Koskela , T , Karppinen , T , Karhu , J M , Savastiouk , V , Suokanerva , H , Kaurola , J , Arola , A , Lindfors , A V , Meinander , O , De Leeuw , G & Heikkilä , A 2016 , ' Data flow of spectral UV measurements at Sodankylä and Jokioinen ' Geoscientific Instrumentation, Methods and Data Systems , vol. 5 , no. 1 , pp. 193-203 . DOI: 10.5194/gi-5-193-2016

Title: Data flow of spectral UV measurements at Sodankylä and Jokioinen
Author: Mäkelä, Jakke Sakari; Lakkala, Kaisa; Koskela, Tapani; Karppinen, Tomi; Karhu, Juha Matti; Savastiouk, Vladimir; Suokanerva, Hanne; Kaurola, Jussi; Arola, Antti; Lindfors, Anders Vilhelm; Meinander, Outi; De Leeuw, Gerrit; Heikkilä, Anu
Contributor: University of Helsinki, Department
Date: 2016
Language: eng
Number of pages: 11
Belongs to series: Geoscientific Instrumentation, Methods and Data Systems
ISSN: 2193-0856
URI: http://hdl.handle.net/10138/165445
Abstract: The data flow involved in a long-term continuous solar spectral UV irradiance monitoring program is investigated and structured to provide an overall view on the multiphase process from data acquisition to the final products. The program employing Brewer spectrophotometers as measuring instruments is maintained by the Finnish Meteorological Institute (FMI) ever since the 1990s at two sites in Finland: Sodankyla (67 degrees N) and Jokioinen (61 degrees N). It is built upon rigorous operation routines, processing procedures, and tools for quality control (QC) and quality analysis (QA) under continuous development and evaluation. Three distinct levels of data emerge, each after certain phase in the data flow: Level 0 denoting raw data, Level 1 meaning calibrated data processed in near-real time, and Level 2 comprising of postprocessed data corrected for all distinguishable errors and known inaccuracies. The final products disseminated to the users are demonstrated to result from a process with a multitude of separate steps, each required in the production of high-quality data on solar UV radiation at the Earth's surface.
Subject: AEROSOL OPTICAL DEPTH
BREWER SPECTROPHOTOMETERS
ULTRAVIOLET-RADIATION
OZONE DEPLETION
GROUND-LEVEL
COLUMN
SPECTRORADIOMETER
INSTRUMENTS
IRRADIANCE
RETRIEVAL
114 Physical sciences
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