Petra Philipson

Petra Philipson
Brockmann Geomatics Sweden AB

PhD

About

33
Publications
8,009
Reads
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397
Citations
Citations since 2016
18 Research Items
368 Citations
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20162017201820192020202120220204060
20162017201820192020202120220204060
20162017201820192020202120220204060
Introduction
Earth Observation in the aquatic environment
Additional affiliations
April 2011 - March 2016
Independent Researcher
Independent Researcher
Position
  • Vice Managing Director

Publications

Publications (33)
Technical Report
Full-text available
The scope of this document is to report on the investigations and analysis performed and conclusions related to the above stated objectives. The analysis was focused on comparison of water quality estimations from the two HYPE models, S-HYPE andE-HYPE, and MERIS based water quality estimations in several European lakes. The objective was to illustr...
Article
Full-text available
Colored dissolved organic matter (CDOM) in marine environments impacts primary production due to its absorption effect on the photosynthetically active radiation. In coastal seas, CDOM originates from terrestrial sources predominantly and causes spatial and temporal changing patterns of light absorption which should be considered in marine biogeoch...
Article
Full-text available
Marginal seas are a dynamic and still to large extent uncertain component of the global carbon cycle. The large temporal and spatial variations of sea-surface partial pressure of carbon dioxide (pCO2) in these areas are driven by multiple complex mechanisms. In this study, we analyzed the variable importance for the sea surface pCO2 estimation in t...
Preprint
Full-text available
Colored dissolved organic matter (CDOM) in marine environments impacts primary production due to its absorption effect on the photosynthetically active radiation. In coastal seas, CDOM originates from terrestrial sources predominantly and causes spatial and temporal changing patterns of light absorption which should be considered in marine biogeoch...
Article
Wetlands are the most fragile and threatened ecosystems worldwide, and also one of the most rapidly declining. At the same time wetlands are typically biodiversity hotspots and provide a range of valuable ecosystem services, such as water supply and purification, disaster risk reduction, climate change adaptation, and carbon sequestration. Pressure...
Presentation
Full-text available
A global service for environmental authorities and the commercial sector, assessing toxin-producing cyanobacteria blooms in water resources globally.
Presentation
Full-text available
CyanoAlert® este un serviciu destinat autorităţilor de mediu, organizaţiilor şi institutelor care au în atribuţii sau au preocupări privind monitoringul calităţii resurselor de apă continentale şi din zonele costiere.
Article
Full-text available
Over the past years, there has been significant progress in the field of water quality monitoring that has also introduced new challenges. First and foremost, there is an ongoing development in satellite-based retrieval techniques, accompanied by technological development of the equipment deployed in situ to monitor chlorophyll and cyanobacteria. T...
Poster
Full-text available
The CyanoAlert viewer enables visualisation of the satellite products in both map and graph format. Functionalities of the viewer include spatial maps of chl-a concentrations (Figure 1) and the extent of immersed cyanobacteria (Figure 2), if detected in the water. The user can also choose data points in the lake to display the water quality informa...
Data
Harmful algal blooms (HABs) pose a global environmental issue with reported impacts on local economies as well as human and animal health, affecting ecosystem services such as the availability of clean drinking water, fisheries and recreation. Exploiting satellite data archives has offered in recent years the unprecedented opportunity to monitor HA...
Conference Paper
Full-text available
Over the past years, there were certain progresses in the field of water quality monitoring that pose new challenges. First and foremost, there is an ongoing development of satellite evaluation, accompanied by technological development of the “in situ” equipment’s that are used for chlorophyll and cyanobacteria assessment. To apprehend potential ad...
Poster
Full-text available
Over the past years, there has been significant progress in the field of water quality monitoring that has also introduced new challenges. First and foremost, there is an ongoing development in satellite-based retrieval techniques, accompanied by technological development of the equipment deployed in situ to monitor chlorophyll and cyanobacteria. T...
Article
Full-text available
Monthly CHL-a and Secchi Depth (SD) data derived from the full mission data of the Medium Resolution Imaging Spectrometer (MERIS; 2002-2012) were analysed along a horizontal transect from the inner bay and out into the open sea. The CHL-a values were calibrated using an algorithm derived from Swedish lakes. Then, calibrated Chl-a and Secchi Depth (...
Article
Full-text available
The use of ground sampled water quality information for global studies is limited due to practical and financial constraints. Remote sensing is a valuable means to overcome such limitations and to provide synoptic views of ambient water quality at appropriate spatio-temporal scales. In past years several large data processing efforts were initiated...
Article
Full-text available
The use of ground sampled water quality information for global studies is limited due to practical and financial constraints. Remote sensing is a valuable means to overcome such limitations and to provide synoptic views of ambient water quality at appropriate spatio-temporal scales. In past years several large data processing efforts were initiated...
Chapter
Wetlands are a key habitat within the Mediterranean biodiversity hotspot and provide important ecosystem services for human well-being. Remote sensing (RS) has significantly boosted our ability to monitor changes in Mediterranean wetlands, especially in areas where little information is being collected. However, its application to wetlands has some...
Article
Full-text available
Remote sensing techniques may provide a higher temporal and spatial resolution than traditional water monitoring methods. We tested if this auxiliary information can be used to (i) explain patterns in fish assemblage composition and (ii) test candidate metrics to assess ecological status in large lake water bodies. We used MERIS-derived layers desc...
Article
Full-text available
Lake Vanern, Sweden, is one of Europe’s largest lakes and has a historical, cultural, ecological as well as economic importance. Lake water quality monitoring is required by national and international legislations and directives, but present programmes are insufficient to meet the requirements. To complement in situ based monitoring, the possibilit...
Technical Report
Full-text available
The objective of this document is to analyse the usability of GLaSS products for the monitoring and reporting required for the Water Framework Directive. The document starts with an introduction to the directive. The directive monitoring and reporting activities of six member states (Finland, Estonia, Sweden, Germany, The Netherlands and Italy) are...
Technical Report
Full-text available
Boreal lakes often contain high concentrations of colored dissolved organic matter (CDOM). This leads to strong absorption of light especially in the blue and green parts of the spectrum and complicates the use of EO methods. Standard algorithms often fail in these waters and new methods are needed. This document describes the results of five studi...
Article
Full-text available
The need to restore and protect waterbodies from further degradation has resulted in formulation of the European Union Water Framework Directive 2000/60/EC (WFD). The directive aims to harmonize European legislation on water; and member states shall establish a programme for monitoring the status of all waterbodies larger than 0.5 km^2, in order to...
Conference Paper
Full-text available
The European collaborative project GLaSS aims to prepare for the use of the data streams from Sentinel 2 and Sentinel 3. Its focus is on inland waters, since these are considered to be sentinels for land-use- and climate change and need to be monitored closely. One of the objectives of the project is to compare existing water quality algorithms and...
Technical Report
Full-text available
The scope of this document is to report on the developments, functionality and technical details of a tool for extraction of valid lake pixels for time series production. The developments are based on existing elements already implemented in BEAM, which provides functionality for definition of valid pixels based on external or predefined masks and...
Technical Report
Full-text available
The GlaSS consortium has an excellent working knowledge on how to apply MERIS RR and The GlaSS consortium has an excellent working knowledge on how to apply MERIS RR and The GlaSS consortium has an excellent working knowledge on how to apply MERIS RR and The GlaSS consortium has an excellent working knowledge on how to apply MERIS RR and The GlaSS...
Conference Paper
According to the Water Framework Directive (WFD), all lakes larger than 50 ha (0,5 km2) should be monitored on a regular basis. In Sweden, chlorophyll a is one of the parameters used to classify the phytoplankton status of a lake. The possibility to use satellite based information (ENVISAT - MERIS) to measure and monitor the water quality status of...
Article
Full-text available
While land maps of vegetation cover and substrate types exist, similar underwater maps are rare or almost non-existing. We developed the use of airborne bathymetric lidar mapping and high resolution satellite data to a combined method for shallow sea floor classification. A classification accuracy of about 80% is possible for six classes of substra...
Article
Full-text available
In this study the use of ocean color data as a diagnostic tool in integrated coastal zone management was investigated as part of the Science Policy Integration for Coastal Systems Assessment (SPICOSA) project. Parallel to this, an operational coastal monitoring system has been set up in close collaboration with end-users. The core work of the bio-o...
Article
Earlier research results have shown some potential of using high resolution satellite data, like QuickBird, for sea floor classification, but the number of bands have been a limiting factor. In this paper we present the results of a preliminary study of the use of WorldView-2 data for benthic cover classification in the Swedish archipelago. WorldVi...
Article
The dramatic bleaching events on the coral reefs recently have enhanced the need for environmental monitoring. Remote sensing is an important constituent for monitoring of reefs, and an invaluable complement to field observations. This paper discusses the possibilities and limitations of present high resolution satellites for mapping and monitoring...
Article
A simple bio-optical model has been developed and used together with historical water quality measurements from Lake Mälaren, Sweden, to construct an algorithm for retrieval of chlorophyll concentrations from remote sensing data. The algorithm has previously been applied to CASI data from Lake Mälaren and the result was promising, but the model nee...
Article
The usefulness of high resolution satellite data for classification of shallow sea beds has been evaluated. The goal was to identify vegetation coverd areas and different species of bentich vegetation in the Gränsö-Singö archipelago. The results indicate that it could be possible to separate vegetation covered from unvegetated areas down to the max...

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Projects

Projects (4)
Archived project
Space-based cyanobacteria information and services
Project
CyanoAlert (funded by the European Commission under Horizon 2020 EO-1-2016 "Downstream Applications") will be a global service for environmental authorities and the commercial sector, concerned by health risks and quality of water resources. The project makes use of the wealth of information provided by Copernicus to deliver a fully automated application for assessing toxin-producing cyanobacteria blooms in water resources globally. The service foresees a dual system that provides user-specific information for monitoring and reporting purposes to paying customers, and a free and open information service for the general public. The service will be implemented through a collaboration between European SMEs, and with pilot users in the government and commercial sector. Through establishing a supply chain for the information products and integrating these into customer’s workflows, the project seeks to create a sustainable business within three years following the period of project funding.
Archived project
GLaSS developed innovative tools to prepare for using the new Sentinel­-2 and Sentinel­-3 satellites to monitor water quality in lakes and reservoirs.