Sentinel-3 is one of the European Space Agency's (ESA) next generation missions. It will be responsible for: measuring sea surface; taking sea and land surface temperature; collecting data of land surface colour. The observations will be used to conjunction with other ocean-observing missions to contribute Copernicus – The European Earth Observation Programme’s Global Ocean Observing System (GOOS) which aims to create a permanent system of ocean observation.
Remote sensing has proven to be an accurate and reliable tool in clear water environments like oceans or the Mediterranean Sea. However, the current algorithms usually fail on optically complex waters like coastal and inland waters. The whole Baltic Sea can be considered as optically complex coastal waters. Using its airborne remote sensing system ARSENAL the Institute for Environmental Solutions (IES) is planning to simulate Sentinel-3 data to develop algorithms and methods suitable for the Baltic Sea conditions to characterise optical properties of water surface and water quality products.
Using developed algorithm Latvia will be able to obtain objective information on the Baltic Sea surface and the quality of incoming waters, sources of pollutions, and other factors that impact marine ecology.
The view expressed herein can in no way be taked to reflect the official opinion of the ESA.
As there will be no satellite data available during 2015, the remote sensing data will be collected using IES’s Airborne Environmental Surveillance and Monitoring System ARSENAL.
ARSENAL combines nine, mutually integrated spectral imaging sensors and operates in a spectral range from 280 nm to 12 000 nm. It is embedded in a twin engine Britten Norman Defender aircraft BN-2T-4S. The observation will be fulfilled by hyperspectral airborne imaging sensors (operating in a spectral range of 380-1050 nm) and a high resolution RGB camera. The spectral band of hyperspectral sensors will be applied to simulate the Sentinel-3 bands and the maximum swath and required spatial resolution both for hyperspectral and RGB sensors will be reached by careful data collection planning. For verification of airborne remote sensing data, the in-situ sampling and laboratory analysis will be carried out.
As a result of the project, IES will develop an algorithm for the characterisation of optical properties and water quality factors of coastal waters of the Baltic Sea.