The top-of-atmosphere spectral reflectance measured by SCIAMACHY has been validated by comparisons between calibrated SCIAMACHY V6 Level 1 data and corresponding reflectances from AATSR and MERIS. The AATSR analysis is currently restricted to part of one specifically processed orbit containing a scene over a hurricane with high and homogeneous clouds for which results for V5 data are already av...

RESUME We have received level 1 data (calibrated radiances in each of the 15 spectral bands of the baseline band-set) for all the above 156 scenes, and level 2 data (atmospherically-corrected radiances, and derived products) for 111 scenes, a total of 42 in 2002, 33 in 2003 and 35 in 2004. All the above data are at the reduced resolution (RR) of 1200 m, comparable to SeaWiFS and MODIS. One impo...

We present here the results of calibrating and validating a three-band model and, its special case, a two-band model, which use MEdium Resolution Imaging Spectrometer (MERIS) reflectances in the red and near-infrared spectral regions for estimating chlorophyll-a (chl-a) concentration in inland, estuarine, and coastal turbid productive waters. During four data collection campaigns in 2008 and on...

Monitoring Earth dynamics using current and future satellites is one of the most important objectives of the remote sensing community. The exploitation of image time series from sensors with different characteristics provides new opportunities to increase the knowledge about environmental changes and to support many operational applications. This paper presents an image fusion approach based on...

An accurate estimation of the chlorophyll-a (Chla) concentration is crucial for water quality monitoring and is highly desired by various government agencies and environmental groups. However, using satellite observations for Chla estimation remains problematic over coastal waters due to their optical complexity and the critical atmospheric correction. In this study, we coupled an atmospheric a...

The detection of Dense Dark Vegetation (DDV) using the Atmospherically Resistant Vegetation Index (ARVI) and then the aerosol retrieval over DDV are the critical points of the land part of the processing of MERIS images implemented in the level 2 processor. We present here the first validation attempt of the MERIS aerosol product over land by checking its consistency and comparing it to AERONET...

In the frame of operational remote sensing based National Crop Monitoring and Production Forecast Program (CROPMON) the Remote Sensing Center of Institute of Geodesy, Cartography and Remote Sensing, (FÖMI RSC) provided nation-wide crop production forecasts. The technology of CROPMON served as the background of disaster monitoring. The achieved results of ESA–FÖMI Prodex-ENVISAT R&D project demo...

During ERS-1 and ERS-2 missions, the application of synthetic aperture radar interferometry (InSAR) become known as a very important method for topographic mapping and high accuracy surface displacement measurements. Further investigations, however, showed that expected accuracy couldn’t be achieved. It appeared that radiowave propagation through the atmosphere causes significant distortion to ...

A hydro-optical algorithm based on reflectance at 555nm has been used in the past for suspended particulate matter concentrations (SPM) retrieval from SeaWiFS over the Belgian coastal (case II) waters in Southern North Sea. The extra spectral resolution of MERIS offers the possibility of improvements, though necessitates algorithm recalibration. This study presents the calibration of the hydro-...

Periodic blooms of Pseudonitzschia spp. in Galician coastal areas have caused virtual collapse of ecosystems with accomp anying serious economic impacts. The aim of this work is the study of the physical environment of a coastal system correlating different bands of MERIS data with in situ chlorophyll data provided by the Marine Environment Quality Control Centre (CCMM) during a study period as...