A satellite system for monitoring the radiation budget at the Baltic Sea surface
Tomasz Zapadka , Mirosława Ostrowska , Damian Stoltmann , Adam Krężel
AbstractThe paper discusses the possibilities and limitations of using satellite data to determine the radiation budget NET and its components at the Baltic Sea surface in near real time using a newly established SBRB system (SatBałtyk Radiation Budget). The system enables determination of daily radiation fluxes over the entire Baltic Sea employing data from satellites in combination with data from numerical prognostic models. Data from satellite radiometers like SEVIRI, AVHRR are used together with algorithms that take into account the specificity of this sea and are developed based on large empirical data sets collected in this region. A verification of the system has been carried out based on separate, empirical data collected in 2015 on the oil rig Plat placed on the Baltic Sea and Svenska Högarna station. The analysis showed that daily average NET had been calculated with RMSD of 15 Wm−2 and R2 = 0.95 for the South Baltic. For downward radiation fluxes in the solar wavelength range (SW) and the terrestrial, thermal wavelength range (LW) RMSD is respectively 11.9 Wm−2 and 9.6 Wm−2 and in both cases increase with latitude. The NET components estimated using SBRB were also compared with the corresponding magnitudes OSI -303-a and OSI 304-a from OSI SAF, EBAF surface Edition 4.0 from CERES and ERA-interim data from ECMWF systems. The main reasons for the discrepancies are discussed. The analyses confirmed the advisability of using local solutions which ensure high accuracy and spatial resolution. SBRB was developed and implemented as part of the comprehensive SatBałtyk System designed to monitor the Baltic Sea environment. The maps together with instantaneous values of the radiation components measured at actinometric stations employed at SatBałtyk System are accessible at www.satbaltyk.iopan.gda.pl. The scheme, algorithms and the way of the SBRB operation are described in detail.
|Journal series||Remote Sensing of Environment, ISSN 0034-4257, e-ISSN 1879-0704, (N/A 200 pkt)|
|Publication size in sheets||0.85|
|ASJC Classification||; ;|
|Score||= 200.0, 06-08-2020, ArticleFromJournal|
|Publication indicators||= 1.000; : 2017 = 2.500; : 2018 = 8.218 (2) - 2018=8.791 (5)|
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