Now showing items 1-11 of 11

  • Applications of L-band missions for environmental research 

    Chaparro Danon, David (Universitat Politècnica de Catalunya, 2018-10-15)
    Doctoral thesis
    Open Access
    Human activity leads to environmental changes which threaten the vegetation. Global warm ing trends, deforestation and land cover, or modified Earth's surface albedo, are sorne examples of these environmental changes. ...
  • A spatially consistent downscaling approach for SMOS using an adaptive window 

    Portal González, Gerard; Vall-Llossera Ferran, Mercedes Magdalena; Piles de la Fuente, María Pilar; Camps Carmona, Adriano José; Chaparro Danon, David; Pablos Hernández, Miriam; Rossato, Luciana (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    The ESA's Soil Moisture and Ocean Salinity (SMOS, 2009-2017) is the first mission using L-band radiometry to monitor the Earth's global surface soil moisture (SM). After more than 7 years in orbit, many studies have ...
  • L-Band vegetation optical depth for crop phenology monitoring and crop yield assessment 

    Chaparro Danon, David; Piles Guillem, Maria; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José; Konings, Alexandra G.; Entekhabi, Dara; Jagdhuber, Thomas (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    Vegetation Optical Depth (VOD) at L-band is highly sensitive to the water content and above-ground biomass of vegetation. Hence, it has great potential for monitoring crop phenology and for providing crop yield forecasts. ...
  • L-band vegetation optical depth seasonal metrics for crop yield assessment 

    Chaparro Danon, David; Piles Guillem, Maria; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José; Konings, Alexandra G.; Entekhabi, Dara (2018-06-01)
    Article
    Restricted access - publisher's policy
    Attenuation of surface microwave emission due to the overlying vegetation is proportional to the density of the canopy and to its water content. The vegetation optical depth (VOD) parameter measures this attenuation. VOD ...
  • Low soil moisture and high temperatures as indicators for forest fire occurrence and extent across the Iberian Peninsula 

    Chaparro Danon, David; Vall-Llossera Ferran, Mercedes Magdalena; Piles Guillem, Maria; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    Fires are a concerning topic in Mediterranean areas. They are increasing in number and extension, probably due to the anomalous dry and hot conditions experienced in this region in the last decade. In this study, more than ...
  • Microwave and optical data fusion for global mapping of soil moisture at high resolution 

    Portal González, Gerard; Vall-Llossera Ferran, Mercedes Magdalena; Piles Guillem, Maria; Camps Carmona, Adriano José; Chaparro Danon, David; Pablos Hernánez, Miriam; Rossato, Luciana; Aabouch, Khalid (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    After more than 8 years in orbit the Soil Moisture and Ocean Salinity (SMOS) satellite is still in good health and several algorithms for improving its spatial resolution have been proposed and validated in a variety of ...
  • Modelling forest decline using SMOS soil moisture and vegetation optical depth 

    Chaparro Danon, David; Piles de la Fuente, María Pilar; Martínez Vilalta, Jordi; Vall-Llossera Ferran, Mercedes Magdalena; Vayreda, Jordi; Banque, Mireia; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    Global change is increasing the risk of forest decline worldwide, impacting carbon and water cycles. Hence, there is an urgent need for predicting forest decline occurrence. To that purpose, this study links forest decline ...
  • Predicting the extent of wildfires using remotely sensed soil moisture and temperature trends 

    Chaparro Danon, David; Vall-Llossera Ferran, Mercedes Magdalena; Piles Guillem, Maria; Camps Carmona, Adriano José; Rudiger, Christoph; Riera Tatche, Ramón (Institute of Electrical and Electronics Engineers (IEEE), 2016-06-01)
    Article
    Open Access
    Recent climate trends evidence a rise of temperatures and an increase in the duration and intensity of droughts which is in turn leading to the occurrence of larger wildfires, which threaten the environment as well as human ...
  • SMAP multi-temporal vegetation optical depth retrieval as an indicator of crop yield trend and crop composition 

    Chaparro Danon, David; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José; Piles de la Fuente, María Pilar; Konings, Alexandra G.; Entekhabi, Dara (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    Vegetation Optical Depth (VOD) is related to Vegetation Water Content (VWC). This provides new and highly valuable information for ecological and agricultural studies. In this work, VOD from the Soil Moisture Active-Passive ...
  • SMOS and climate data applicability for analyzing forest decline and forest fires 

    Chaparro Danon, David; Vayreda, Jordi; Martínez Vilalta, Jordi; Vall-Llossera Ferran, Mercedes Magdalena; Banque, Mireia; Camps Carmona, Adriano José; Piles Guillem, Maria (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    Forests partially reduce climate change impact but, at the same time, this climate forcing threatens forest's health. In recent decades, droughts are becoming more frequent and intense implying an increase of forest decline ...
  • Surface moisture and temperature trends anticipate drought conditions linked to wildfire activity in the Iberian Peninsula 

    Chaparro Danon, David; Piles Guillem, Maria; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José (2016-01-01)
    Article
    Open Access
    In this study, drought conditions involving risk of fires are detected applying SMOS-derived soil moisture data and land surface temperature models. Moisture-temperature (SM-LST) patterns studied between 2010 and 2014 were ...