The main objective of the research presented in this article is to analyse the polarimetric chara... more The main objective of the research presented in this article is to analyse the polarimetric charac-teristics of three main types of natural vegetation occurring in the Biebrza National Park – forests, shrubs and non-forest land communities covering wetlands. The variability of many different polarimetric products of signal decomposition, depending on the type of vegetation, the microwave image acquisition period and the method of their preliminary treatment, was analysed. An attempt was also made to assess how much polari-metric methods can be useful for modelling biophysical parameters of vegetation. The study used six dual-polarized (HH and HV) ALOS satellite images recorded during the growing season in the years 2008, 2009 and 2010. The images were processed in parallel, using different parameters, in order to estimate the impact of the spatial resolution of images and methods of speckle noise filtering on the value of polarimetric charac-teristics of different types of vegetatio...
The objective of the study was an assessment of the effect of climatic changes on grassland growt... more The objective of the study was an assessment of the effect of climatic changes on grassland growth, its water conditions and biomass. Forecasting the grassland biomass and indicating the influence of climate on grasslands growth could be an important tool in grassland management on the national, regional and field grassland scales. Remote sensing gives the possibility to estimate the grassland growth conditions what have been achieved applying NOAA.AVHRR and Terra.MODIS. Identification of grasslands throughout the country have been done using Corine Land Cover (CLC) database. Vegetation index (NDVI) and surface temperature (Ts) have been calculated from satellite data. Meteorological data for Poland have been col-lected: i) for years 1997–2015, ii) for the period 1985–2014 to find the trends of climatic changes. There have been found: significant trends in air temperature (Ta) in NUTS1 in Poland; significant trend of increasing grassland surface temperature (Ts) in Poland based on s...
The investigation has been carried out for the wetlands in the Biebrza Basin, Poland, which is th... more The investigation has been carried out for the wetlands in the Biebrza Basin, Poland, which is the best -preserved area of marches, and swamps in Central Europe. In the valley of the Biebrza River, flooded heavily every spring natural plant communities grow in several zones. The scientific investigation aimed at findings of changes in land use and spatial differences in soil moisture caused by the process of drying up some part of the area. For that purposes the synergy of data acquired for the same date, from the following satellites were used: Landsat ETM; SPOT VEGETATION; ERS-2.SAR, ERS-2.ATSR and NOAA/AVHRR. During satellite overpasses the ground measurements of soil moisture, LAI, wet and dry biomass, and spectral reflection were performed at the test site. The elaboration was done for the spatial resolution of 30 m and 1 km and for each of the vegetation class obtained from land use classification. On the basis of all considered spectral bands different soil- vegetation indices were calculated and verified using ground measurements. Also evapotranspiration values for different plant communities was calculated using thermal data and meteorological parameters. The best models based on different spectral bands for obtaining LAI and soil moisture was presented. The results of the project intend to find the method for proper water management as the area is drained and many of the ditches do not work properly what influences drying out some part of the area while in the other causes excessive soil moisture. Key words: backscatter, brightness temperature, albedo, NDVI, LAI, soil moisture
2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Grasslands deliver wide range of ecosystem services such as carbon sequestration, water quality, ... more Grasslands deliver wide range of ecosystem services such as carbon sequestration, water quality, flood and erosion control as well as biomass. But since they are impacted by climate change, there is a need for their constant monitoring. Due to climate changes the following grasslands growth conditions are modified: soil moisture, biomass and as a consequence carbon balance. Required multi-temporal and spatial observations are possible with satellite data. The objective of this paper is to present the long term observations of temperature and vegetation conditions (NDVI) of grasslands on the basis of MODIS satellite data as well as already performed and further scheduled frequent analysis of carbon balance, soil moisture and biomass performed with the application of Sentinel1 A; B and Sentinel2 A&B.
Active and Passive Microwave Remote Sensing for Environmental Monitoring
The results of application of microwave and optical satellite data for soil moisture (SM) assessm... more The results of application of microwave and optical satellite data for soil moisture (SM) assessment are presented. The research has been carried out from 2015 to 2016 at Biebrza Wetlands test site located in North-East Poland, designated by Ramsar Convention as Wetlands of International Importance. A regression models based on Sentinel-1 backscattering coefficients (σ°) have been developed to generate the soil moisture (SM) maps over Biebrza Wetlands. The optical data from Sentinel-2 have been used for the classification of wetlands vegetation habitats to improve SM predictions. The wetland vegetation differed, there were reeds, sedge-moss, sedges, grass-herbs, and grass. The majority of the changes occurred in moist habitats, while anthropogenic appeared more stable during study period. The observed changes were referred to moving/grazing changes and weather effects causing droughts/floods. SM differed from 30% during the drought season in 2015 to 95% in the wet season in 2016. It has been examined the impact of biomass and SM on microwave signal under changing soil moisture and vegetation growth conditions. Vegetation biomass has been characterized by measured in-situ LAI and by vegetation indices calculated from Sentinel-2, Terra MODIS data. The impact of SM and LAI on σ° calculated from Sentinel-1 data showed that LAI dominates the influence on σ° when SM is low. The analysis have been done to estimate the threshold of the SM values which dominate the backscatter. This study demonstrates the capability of Sentinel-1/2 data to estimate SM, offering an important advantage for wetlands monitoring.
IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2003
The numeric inversion of water-cloud model of synchronized microwave bands of ERS-2 and JERS sate... more The numeric inversion of water-cloud model of synchronized microwave bands of ERS-2 and JERS satellites gave the possibility of obtaining crop characteristics. Model performance was validated by comparison between backscattering coefficients simulated and measured by satellites. The contribution of various crop characteristics was presented and compared to measured soil-vegetation parameters at the ground level during satellite overpasses.
Remote Sensing for Agriculture, Ecosystems, and Hydrology III, 2002
Information based on satellite data is used for evaluation of crop growth conditions what is esse... more Information based on satellite data is used for evaluation of crop growth conditions what is essential for proper management of agricultural fields. The database of satellite data used for this application consists of optical and radar data from ERS. Soil moisture has been assessed using two different approaches. First one concerned the application of soil moisture index based on sensible and latent heat calculated from surface temperature (ATSR) and meteorological data (H/LE) and backscattering coefficient calculated from SAR data. Second one concerned the application of modified semiemperical water-cloud model to simulate backscattering coefficients of C-VV of ERS and L-HH of JERS as a function of LAI, Leaf Water Area Index and Vegetation Water Content. The final results gave the possibilities of comparison of the modeled soil moisture values with field measurements. The two-way attenuation of vegetation in three models for C-VV band and L-HH band has been examined.
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004
... Retrieved from Satellite Images Katarzyna Dabrowska-Zielinska, Maria Gruszczynska, Herve Yeso... more ... Retrieved from Satellite Images Katarzyna Dabrowska-Zielinska, Maria Gruszczynska, Herve Yesou*, Wanda Kowalik, Agata Hoscilo, Iwona Malek. ... The Medium Infrared Index (MI, developed by authors) takes into account reflection in medium infrared band. ...
Soil moisture (SM) plays an essential role in environmental studies related to wetlands, an ecosy... more Soil moisture (SM) plays an essential role in environmental studies related to wetlands, an ecosystem sensitive to climate change. Hence, there is the need for its constant monitoring. SAR (Synthetic Aperture Radar) satellite imagery is the only mean to fulfill this objective regardless of the weather. The objective of the study was to develop the methodology for SM retrieval under wetland vegetation using Sentinel-1 (S-1) satellite data. The study was carried out during the years 2015–2017 in the Biebrza Wetlands, situated in northeastern Poland. At the Biebrza Wetlands, two Sentinel-1 validation sites were established, covering grassland and marshland biomes, where a network of 18 stations for soil moisture measurement was deployed. The sites were funded by the European Space Agency (ESA), and the collected measurements are available through the International Soil Moisture Network (ISMN). The NDVI (Normalized Difference Vegetation Index) was derived from the optical imagery ...
Igarss 2008 2008 Ieee International Geoscience and Remote Sensing Symposium, 2008
ABSTRACT The study was carried out for agricultural area in Poland for the years 2003-2007. The a... more ABSTRACT The study was carried out for agricultural area in Poland for the years 2003-2007. The aim of the project was to examine the impact of soil-vegetation parameters on backscatter calculated from ENVISAT.ASAR under various polarizations and incidence angles. The extensive field measurements have been carried out simultaneously to satellite overpasses. Additionally to microwave acquisitions the optical data from TERRA.ASTER satellite have been used to distinguish different crop types. There has been applied two approaches: (1) for each of the class the equations for calculation of LAI and soil moisture from microwave data have been derived using statistical analyses, and the maps of LAI and soil moisture have been presented; (2) the semi empirical water-cloud model has been applied to describe the contribution of soil moisture and winter wheat descriptor as LAI on backscattering coefficient. The results show that presented methods can be implemented into monitoring of crop growth.
The investigation has been carried out for the wetlands in the Biebrza Basin, Poland, which is th... more The investigation has been carried out for the wetlands in the Biebrza Basin, Poland, which is the best -preserved area of marches, and swamps in Central Europe. In the valley of the Biebrza River, flooded heavily every spring natural plant communities grow in several zones. The scientific investigation aimed at findings of changes in land use and spatial differences in soil moisture caused by the process of drying up some part of the area. For that purposes the synergy of data acquired for the same date, from the following satellites were used: Landsat ETM; SPOT VEGETATION; ERS-2.SAR, ERS-2.ATSR and NOAA/AVHRR. During satellite overpasses the ground measurements of soil moisture, LAI, wet and dry biomass, and spectral reflection were performed at the test site. The elaboration was done for the spatial resolution of 30 m and 1 km and for each of the vegetation class obtained from land use classification. On the basis of all considered spectral bands different soil- vegetation indices were calculated and verified using ground measurements. Also evapotranspiration values for different plant communities was calculated using thermal data and meteorological parameters. The best models based on different spectral bands for obtaining LAI and soil moisture was presented. The results of the project intend to find the method for proper water management as the area is drained and many of the ditches do not work properly what influences drying out some part of the area while in the other causes excessive soil moisture. Key words: backscatter, brightness temperature, albedo, NDVI, LAI, soil moisture
2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
The SPOT VEGETATION and NOAA AVHRR images have been used as the source of information on crop gro... more The SPOT VEGETATION and NOAA AVHRR images have been used as the source of information on crop growing conditions and yield forecast for cereals and winter wheat in Poland. Three indices - Vegetation Condition Index (VCI), Accumulated Vegetation Condition Index (AVCI) based on NDVI and Temperature Condition Index (TCI) based on surface temperature have been computed for agriculture area in
2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
The radar data have been used for establishing the proper crop information system in Poland. The ... more The radar data have been used for establishing the proper crop information system in Poland. The objective of the study is to find an efficient method of crop classification based on satellite microwave data and to find the relationship of different soil - vegetation parameters on backscatter. There is a large demand of microwave images as due to often cloud
The main objective of the research presented in this article is to analyse the polarimetric chara... more The main objective of the research presented in this article is to analyse the polarimetric charac-teristics of three main types of natural vegetation occurring in the Biebrza National Park – forests, shrubs and non-forest land communities covering wetlands. The variability of many different polarimetric products of signal decomposition, depending on the type of vegetation, the microwave image acquisition period and the method of their preliminary treatment, was analysed. An attempt was also made to assess how much polari-metric methods can be useful for modelling biophysical parameters of vegetation. The study used six dual-polarized (HH and HV) ALOS satellite images recorded during the growing season in the years 2008, 2009 and 2010. The images were processed in parallel, using different parameters, in order to estimate the impact of the spatial resolution of images and methods of speckle noise filtering on the value of polarimetric charac-teristics of different types of vegetatio...
The objective of the study was an assessment of the effect of climatic changes on grassland growt... more The objective of the study was an assessment of the effect of climatic changes on grassland growth, its water conditions and biomass. Forecasting the grassland biomass and indicating the influence of climate on grasslands growth could be an important tool in grassland management on the national, regional and field grassland scales. Remote sensing gives the possibility to estimate the grassland growth conditions what have been achieved applying NOAA.AVHRR and Terra.MODIS. Identification of grasslands throughout the country have been done using Corine Land Cover (CLC) database. Vegetation index (NDVI) and surface temperature (Ts) have been calculated from satellite data. Meteorological data for Poland have been col-lected: i) for years 1997–2015, ii) for the period 1985–2014 to find the trends of climatic changes. There have been found: significant trends in air temperature (Ta) in NUTS1 in Poland; significant trend of increasing grassland surface temperature (Ts) in Poland based on s...
The investigation has been carried out for the wetlands in the Biebrza Basin, Poland, which is th... more The investigation has been carried out for the wetlands in the Biebrza Basin, Poland, which is the best -preserved area of marches, and swamps in Central Europe. In the valley of the Biebrza River, flooded heavily every spring natural plant communities grow in several zones. The scientific investigation aimed at findings of changes in land use and spatial differences in soil moisture caused by the process of drying up some part of the area. For that purposes the synergy of data acquired for the same date, from the following satellites were used: Landsat ETM; SPOT VEGETATION; ERS-2.SAR, ERS-2.ATSR and NOAA/AVHRR. During satellite overpasses the ground measurements of soil moisture, LAI, wet and dry biomass, and spectral reflection were performed at the test site. The elaboration was done for the spatial resolution of 30 m and 1 km and for each of the vegetation class obtained from land use classification. On the basis of all considered spectral bands different soil- vegetation indices were calculated and verified using ground measurements. Also evapotranspiration values for different plant communities was calculated using thermal data and meteorological parameters. The best models based on different spectral bands for obtaining LAI and soil moisture was presented. The results of the project intend to find the method for proper water management as the area is drained and many of the ditches do not work properly what influences drying out some part of the area while in the other causes excessive soil moisture. Key words: backscatter, brightness temperature, albedo, NDVI, LAI, soil moisture
2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Grasslands deliver wide range of ecosystem services such as carbon sequestration, water quality, ... more Grasslands deliver wide range of ecosystem services such as carbon sequestration, water quality, flood and erosion control as well as biomass. But since they are impacted by climate change, there is a need for their constant monitoring. Due to climate changes the following grasslands growth conditions are modified: soil moisture, biomass and as a consequence carbon balance. Required multi-temporal and spatial observations are possible with satellite data. The objective of this paper is to present the long term observations of temperature and vegetation conditions (NDVI) of grasslands on the basis of MODIS satellite data as well as already performed and further scheduled frequent analysis of carbon balance, soil moisture and biomass performed with the application of Sentinel1 A; B and Sentinel2 A&B.
Active and Passive Microwave Remote Sensing for Environmental Monitoring
The results of application of microwave and optical satellite data for soil moisture (SM) assessm... more The results of application of microwave and optical satellite data for soil moisture (SM) assessment are presented. The research has been carried out from 2015 to 2016 at Biebrza Wetlands test site located in North-East Poland, designated by Ramsar Convention as Wetlands of International Importance. A regression models based on Sentinel-1 backscattering coefficients (σ°) have been developed to generate the soil moisture (SM) maps over Biebrza Wetlands. The optical data from Sentinel-2 have been used for the classification of wetlands vegetation habitats to improve SM predictions. The wetland vegetation differed, there were reeds, sedge-moss, sedges, grass-herbs, and grass. The majority of the changes occurred in moist habitats, while anthropogenic appeared more stable during study period. The observed changes were referred to moving/grazing changes and weather effects causing droughts/floods. SM differed from 30% during the drought season in 2015 to 95% in the wet season in 2016. It has been examined the impact of biomass and SM on microwave signal under changing soil moisture and vegetation growth conditions. Vegetation biomass has been characterized by measured in-situ LAI and by vegetation indices calculated from Sentinel-2, Terra MODIS data. The impact of SM and LAI on σ° calculated from Sentinel-1 data showed that LAI dominates the influence on σ° when SM is low. The analysis have been done to estimate the threshold of the SM values which dominate the backscatter. This study demonstrates the capability of Sentinel-1/2 data to estimate SM, offering an important advantage for wetlands monitoring.
IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2003
The numeric inversion of water-cloud model of synchronized microwave bands of ERS-2 and JERS sate... more The numeric inversion of water-cloud model of synchronized microwave bands of ERS-2 and JERS satellites gave the possibility of obtaining crop characteristics. Model performance was validated by comparison between backscattering coefficients simulated and measured by satellites. The contribution of various crop characteristics was presented and compared to measured soil-vegetation parameters at the ground level during satellite overpasses.
Remote Sensing for Agriculture, Ecosystems, and Hydrology III, 2002
Information based on satellite data is used for evaluation of crop growth conditions what is esse... more Information based on satellite data is used for evaluation of crop growth conditions what is essential for proper management of agricultural fields. The database of satellite data used for this application consists of optical and radar data from ERS. Soil moisture has been assessed using two different approaches. First one concerned the application of soil moisture index based on sensible and latent heat calculated from surface temperature (ATSR) and meteorological data (H/LE) and backscattering coefficient calculated from SAR data. Second one concerned the application of modified semiemperical water-cloud model to simulate backscattering coefficients of C-VV of ERS and L-HH of JERS as a function of LAI, Leaf Water Area Index and Vegetation Water Content. The final results gave the possibilities of comparison of the modeled soil moisture values with field measurements. The two-way attenuation of vegetation in three models for C-VV band and L-HH band has been examined.
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004
... Retrieved from Satellite Images Katarzyna Dabrowska-Zielinska, Maria Gruszczynska, Herve Yeso... more ... Retrieved from Satellite Images Katarzyna Dabrowska-Zielinska, Maria Gruszczynska, Herve Yesou*, Wanda Kowalik, Agata Hoscilo, Iwona Malek. ... The Medium Infrared Index (MI, developed by authors) takes into account reflection in medium infrared band. ...
Soil moisture (SM) plays an essential role in environmental studies related to wetlands, an ecosy... more Soil moisture (SM) plays an essential role in environmental studies related to wetlands, an ecosystem sensitive to climate change. Hence, there is the need for its constant monitoring. SAR (Synthetic Aperture Radar) satellite imagery is the only mean to fulfill this objective regardless of the weather. The objective of the study was to develop the methodology for SM retrieval under wetland vegetation using Sentinel-1 (S-1) satellite data. The study was carried out during the years 2015–2017 in the Biebrza Wetlands, situated in northeastern Poland. At the Biebrza Wetlands, two Sentinel-1 validation sites were established, covering grassland and marshland biomes, where a network of 18 stations for soil moisture measurement was deployed. The sites were funded by the European Space Agency (ESA), and the collected measurements are available through the International Soil Moisture Network (ISMN). The NDVI (Normalized Difference Vegetation Index) was derived from the optical imagery ...
Igarss 2008 2008 Ieee International Geoscience and Remote Sensing Symposium, 2008
ABSTRACT The study was carried out for agricultural area in Poland for the years 2003-2007. The a... more ABSTRACT The study was carried out for agricultural area in Poland for the years 2003-2007. The aim of the project was to examine the impact of soil-vegetation parameters on backscatter calculated from ENVISAT.ASAR under various polarizations and incidence angles. The extensive field measurements have been carried out simultaneously to satellite overpasses. Additionally to microwave acquisitions the optical data from TERRA.ASTER satellite have been used to distinguish different crop types. There has been applied two approaches: (1) for each of the class the equations for calculation of LAI and soil moisture from microwave data have been derived using statistical analyses, and the maps of LAI and soil moisture have been presented; (2) the semi empirical water-cloud model has been applied to describe the contribution of soil moisture and winter wheat descriptor as LAI on backscattering coefficient. The results show that presented methods can be implemented into monitoring of crop growth.
The investigation has been carried out for the wetlands in the Biebrza Basin, Poland, which is th... more The investigation has been carried out for the wetlands in the Biebrza Basin, Poland, which is the best -preserved area of marches, and swamps in Central Europe. In the valley of the Biebrza River, flooded heavily every spring natural plant communities grow in several zones. The scientific investigation aimed at findings of changes in land use and spatial differences in soil moisture caused by the process of drying up some part of the area. For that purposes the synergy of data acquired for the same date, from the following satellites were used: Landsat ETM; SPOT VEGETATION; ERS-2.SAR, ERS-2.ATSR and NOAA/AVHRR. During satellite overpasses the ground measurements of soil moisture, LAI, wet and dry biomass, and spectral reflection were performed at the test site. The elaboration was done for the spatial resolution of 30 m and 1 km and for each of the vegetation class obtained from land use classification. On the basis of all considered spectral bands different soil- vegetation indices were calculated and verified using ground measurements. Also evapotranspiration values for different plant communities was calculated using thermal data and meteorological parameters. The best models based on different spectral bands for obtaining LAI and soil moisture was presented. The results of the project intend to find the method for proper water management as the area is drained and many of the ditches do not work properly what influences drying out some part of the area while in the other causes excessive soil moisture. Key words: backscatter, brightness temperature, albedo, NDVI, LAI, soil moisture
2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
The SPOT VEGETATION and NOAA AVHRR images have been used as the source of information on crop gro... more The SPOT VEGETATION and NOAA AVHRR images have been used as the source of information on crop growing conditions and yield forecast for cereals and winter wheat in Poland. Three indices - Vegetation Condition Index (VCI), Accumulated Vegetation Condition Index (AVCI) based on NDVI and Temperature Condition Index (TCI) based on surface temperature have been computed for agriculture area in
2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
The radar data have been used for establishing the proper crop information system in Poland. The ... more The radar data have been used for establishing the proper crop information system in Poland. The objective of the study is to find an efficient method of crop classification based on satellite microwave data and to find the relationship of different soil - vegetation parameters on backscatter. There is a large demand of microwave images as due to often cloud
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Papers by Maria Budzynska