Application Temperature Vegetation Dryness Index TVDI to the Valencia Anchor Station reference area

1

• Application Temperature Vegetation Dryness
  Index (TVDI) to the Valencia Anchor Station
  reference area (www.uv.es/anchors) with a
  continental climate,by using MODIS images.
• Definition of homogeneous units where ground
  based soil moisture measurements will be deployed
  in order to produce soil moisture maps at a large
  scale, compatible to a SMOS reference pixel, and
  addressed to the validation of this instrument.

• TVDI ? Surface temperature
• (Ts) and vegetation index (NDVI) used to obtain
  estimations of soil moisture at the surface
• Only satellite information needed
• TVDI value range from 1 at dry edge (limited
  water availability) to 0 wet edge (max EVT)

26 June 2005
2
FellowshipUCSF VAL(Argentina to Spain)
3

• Application Temperature Vegetation Dryness
  Index (TVDI) to the Alacant Anchor Station
  reference area (www.uv.es/anchors) with a
  continental climate,by using MODIS images.
• Definition of homogeneous units where ground
  based soil moisture measurements will be deployed
  in order to produce soil moisture maps at a large
  scale, compatible to a SMOS reference pixel, and
  addressed to the validation of this instrument.

• TVDI ? Surface temperature
• (Ts) and vegetation index (NDVI) used to obtain
  estimations of soil moisture at the surface
• Only satellite information needed
• TVDI value range from 1 at dry edge (limited
  water availability) to 0 wet edge (max EVT)

26 June 2005
4
FellowshipUCA VAL(Paraguay to Spain)
5

• Analysis of NDVI images of the Iberian Peninsula
  throughout the last two decades in order to
  identify desertification hot spots (areas where
  land degradation processes are taking place).
• The vegetation is considered as a physical
  indicator of the land degradation processes.
• NOAA-AVHRR and SPOT VEGETATION NDVI images are
  available

DESERTIFICATION
6

• Application of geostatistical techniques to
  derive maps of biophysical parameters from
  punctual ground measurements.
• These maps are used to validate remote sensing
  products related to vegetation, as derived from
  appliyind different methologies to images from
  different resolutions.

Ex SAMPLING ESTRATEGIES
Hemispherical Photographs () for LAI and FVC
estimation
VALIDATION
Homogeneous and heterogeneous crops
Row crops