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Ground reference data are a prerequisite for the calibration, update and validation of land data assimilation systems facilitating large-scale crop monitoring based on Earth Observation data. Here, we provide a comprehensive database which was elaborated to test and validate the recently developed Earth Observation Land Data Assimilation System (EO-LDAS). In situ data was collected for seven crop types cultivated on the agricultural Gebesee test site (central Germany) in 2013 and 2014, i.e., winter barley, winter wheat, spring wheat, durum, winter rape, potato and sugar beet. The database contains information on the evolution of biophysical and biochemical plant parameters, phenology, leaf structure, soil moisture, atmospheric states and illumination conditions. In addition, surface reflectance was recorded with a field spectrometer. Data was collected with an approximately weekly to fortnightly resolution throughout the growing season. In addition, it was attempted to schedule days of field work according to the acquisition plans of RapidEye, SPOT5, Landsat 7 and 8, and on days with a high probability of low cloud coverage. Data was collected on up to three elementary sampling units (ESUs) per acreage. ESUs represent squares with a diagonal length of 24 m and consist of five secondary sampling points (SSPs). This experimental design permits an assessment of spatio-temporal variations of the investigated parameters. Coordinates of survey sites, nearby ground control points (GCPs) and check points (CPs) were recorded with a differential Global Navigation Satellite System (dGNSS) which supports accurate geo-referencing of satellite images. The experimental design of the field campaigns, methods employed in the determination of all parameters, and meteorological conditions in the measurement period are described in detail in Truckenbrodt et al., 2017 (in prep.).

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PANGAEA - Publishing Network for Geoscientific & Environmental Data  

Autor(es)

Truckenbrodt, Sina C -  Baade, Jussi - 

Id.: 69764854

Idioma: inglés  - 

Versión: 1.0

Estado: Final

Tipo:  application/zip, 13 datasets - 

Palabras claveAerosol optical thickness at 340 nm -  Aerosol optical thickness at 675 nm -  Aerosol optical thickness at 870 nm -  Aerosol optical thickness at 936 nm -  Analytical method -  AOT_340 -  AOT_675 -  AOT_870 -  AOT_936 -  Apparent clumping factor -  Apparent clumping factor, SSP00 -  Apparent clumping factor, SSP08 -  Apparent clumping factor, SSP12 -  Apparent clumping factor, SSP16 -  Apparent clumping factor, SSP24 -  Application of the EO -  LDAS Prototype and Data Base to Prepare Sentinel -  2 Assimilation -  Area -  as reference for vegetation -  assigned to and classified as senescent vegetation -  assigned to and classified as soil -  assigned to green vegetation and classified as senescent vegetation -  assigned to green vegetation and classified as soil -  assigned to senescent vegetation and classified as green vegetation -  assigned to senescent vegetation and classified as soil -  assigned to soil and classified as green vegetation -  assigned to soil and classified as senescent vegetation -  Awn l -  Awn length -  BBCH -  scale, see further details -  Parameter metadata description -  Bias -  Biom above gr/acreage -  Biomass, above ground per acreage -  Biomass, dry mass above ground -  Biom d above gr -  Calculated, see further details -  Calibrated, see further details -  Camera view during acquisition of digital hemispherical photos -  Chl -  Chl a -  Chl a+b -  Chl b -  Chlorophyll a -  Chlorophyll a, SSP00 -  Chlorophyll a, SSP08 -  Chlorophyll a, SSP12 -  Chlorophyll a, SSP16 -  Chlorophyll a, SSP24 -  Chlorophyll a+b -  Chlorophyll a+b, SSP00 -  Chlorophyll a+b, SSP08 -  Chlorophyll a+b, SSP12 -  Chlorophyll a+b, SSP16 -  Chlorophyll a+b, SSP24 -  Chlorophyll b -  Chlorophyll b, SSP00 -  Chlorophyll b, SSP08 -  Chlorophyll b, SSP12 -  Chlorophyll b, SSP16 -  Chlorophyll b, SSP24 -  Chlorophyll content -  Chlorophyll meter, see further details -  Cloud cov -  Cloud coverage -  Clouds, occurrence -  clouds close to the sun -  Clouds occurr -  Column of water vapor -  Comment -  completely clouds covered -  Counted, see further details -  crop type cultivated in grow season -  CWV -  Date/Time -  DATE/TIME -  Date/time end -  Date/time start -  dense haze -  DEPTH, soil -  Depth soil -  derived from digital hemispherical photos, original unit = m**2/m** -  2 -  Differential Global Navigation Satellite System (dGNSS) -  Direction -  Direct solar irradiance at 340 nm -  Direct solar irradiance at 440 nm -  Direct solar irradiance at 675 nm -  Direct solar irradiance at 870 nm -  Direct solar irradiance at 936 nm -  Dry m -  Dry mass -  E 340 nm -  E 440 nm -  E 675 nm -  E 870 nm -  E 936 nm -  elementary sampling units (ESUs) -  EO -  LDAS -  App -  Equivalent leaf water -  estimated gravimetric soil moisture with reference to the wet mass, SSP00 -  estimated gravimetric soil moisture with reference to the wet mass, SSP08 -  estimated gravimetric soil moisture with reference to the wet mass, SSP12 -  estimated gravimetric soil moisture with reference to the wet mass, SSP16 -  estimated gravimetric soil moisture with reference to the wet mass, SSP24 -  Estimated with reference to the bulk volume, SSP00 -  Estimated with reference to the bulk volume, SSP08 -  Estimated with reference to the bulk volume, SSP12 -  Estimated with reference to the bulk volume, SSP16 -  Estimated with reference to the bulk volume, SSP24 -  Event -  Factor -  Field estimated, see further details -  File name -  File size -  File type -  Folding ruler -  for senescent vegetation -  Fraction -  Fractional vegetation cover -  Fruit yield per acreage -  Fr yield/acreage -  FVC -  Global positioning system reference station -  GPS ref -  Gravimetric analysis, see further details -  gravimetric soil moisture with reference to the wet mass -  Haze, occurrence -  Haze occurr -  Image -  Image number -  Incl -  Inclination -  LAI2200_adivisor_MP -  LAI2200, see further details -  Leaf dry mat -  Leaf dry matter -  Leaf water -  Location -  Mass -  Max -  maximum -  Maximum -  maximum ear inclination -  Mean -  Mean, statistical -  medium haze -  Method -  Min -  Minimum -  minimum ear inclination -  mode ear inclination -  No -  no clouds -  no haze -  No pix -  Number -  Number of pixels -  number of pixels assigned to and classified as green vegetation -  of camera during acquisition of nadir photos -  of chlorophyll (A+B) investigated leaf -  of chlorophyll a+b investigated leaf -  of Chlorophyll a investigated leaf -  of Chlorophyll b investigated leaf -  of dry cracks, SSP00 -  of dry cracks, SSP08 -  of dry cracks, SSP12 -  of dry cracks, SSP16 -  of dry cracks, SSP24 -  of dry leaf -  of ESU -  wide sampling with LAI2200 -  of foliage -  of foliage, SSP00 -  of foliage, SSP08 -  of foliage, SSP12 -  of foliage, SSP16 -  of foliage, SSP24 -  of foliage angle -  of foliage angle, SSP00 -  of foliage angle, SSP08 -  of foliage angle, SSP12 -  of foliage angle, SSP16 -  of foliage angle, SSP24 -  of fresh leaf -  of FVC_bias -  of investigated leaf -  of ML2x -  sensor, SSP00 -  sensor, SSP08 -  sensor, SSP12 -  sensor, SSP16 -  sensor, SSP24 -  of PAI, true determination -  of readings taken with LAI2200 -  of readings taken with LAI2200, , SSP00 -  of readings taken with LAI2200, SSP08 -  of readings taken with LAI2200, SSP12 -  of readings taken with LAI2200, SSP16 -  of readings taken with LAI2200, SSP24 -  of sampled leafs -  of sampled leaves -  of sampling, LAI2200 at SSP00 -  of sampling, LAI2200 at SSP08 -  of sampling, LAI2200 at SSP12 -  of sampling, LAI2200 at SSP16 -  of sampling, LAI2200 at SSP24 -  of Senes_bias -  of senescent material, SSP00 -  of senescent material, SSP08 -  of senescent material, SSP12 -  of senescent material, SSP16 -  of senescent material, SSP24 -  of sky -  of sky, SSP00 -  of sky, SSP08 -  of sky, SSP12 -  of sky, SSP16 -  of sky, SSP24 -  of soil -  of soil sample -  of soil sampling -  of the fractional vegetation cover (FVC) derived from automatic pixel classification -  of the proportion of senescent material (Senes) derived from automatic pixel classification -  Optical airm -  Optical airmass -  original unit = m**2/m** -  PAI -  PAI e -  Phenological development after Meier 2001, BBCH key -  Plant area index -  Plant area index, error -  Plant h -  Plant height -  Pleurosigma spp. -  Position -  Prop -  Proportion -  QF Chl -  Quality flag, chlorophyll -  relative amount of leaf chlorophyll, SSP00 -  relative amount of leaf chlorophyll, SSP08 -  relative amount of leaf chlorophyll, SSP12 -  relative amount of leaf chlorophyll, SSP16 -  relative amount of leaf chlorophyll, SSP24 -  Sample ID -  See further details -  Soil moisture -  Soil moisture meter, see further details -  Solar zenith angle -  SSP00 -  SSP00, original unit = m**2/m** -  SSP00 [m] -  SSP08 -  SSP12 -  SSP12, original unit = m**2/m** -  SSP16 -  SSP16, original unit = m**2/m** -  SSP24 -  SSP24, original unit = m**2/m** -  SSP24 [m] -  SSP80, original unit = m**2/m** -  Standard deviation -  Standard error -  Statistical evaluation, see further details -  Std dev -  Std e -  Sun photometer -  Sun photometer, see further details -  SZA -  thin clouds -  thin haze -  Tilt -  Tilt angle -  time of direct solar irradiance, aerosol optical thickness, column of water vapor -  to aerosol optical thickness -  to awn length -  to Fractional vegetation cover -  to height -  to leaf sampling -  to plant area index -  to plant height -  to proportion of senescent material -  to relative amount of leaf chlorophyll -  to soil moisture -  to soil sample -  true PAI, original unit = m**2/m** -  True PAI, original unit = m**2/m** -  True PAI, SSP00, original unit = m**2/m** -  True PAI, SSP08, original unit = m**2/m** -  True PAI, SSP12, original unit = m**2/m** -  True PAI, SSP16, original unit = m**2/m** -  True PAI, SSP24, original unit = m**2/m** -  Type -  Uniform resource locator/link to file -  Uniform resource locator/link to image -  URL file -  URL image -  UTM east -  UTM Easting, Universal Transverse Mercator -  UTM north -  UTM Northing, Universal Transverse Mercator -  UTM Zone -  UTM Zone, Universal Transverse Mercator -  validated, per image -  validated and classified as senescent vegetation -  validated and classified as vegetation -  Voltage output -  Volt outp -  volumetric soil moisture with reference to the bulk volume (sampling ring), SSP12 -  vravimetric soil moisture with reference to the wet mass -  Wet m -  Wet mass -  Width, maximum -  W max - 

Cobertura:  MEDIAN LATITUDE: 51.092527 * MEDIAN LONGITUDE: 10.916864 * SOUTH-BOUND LATITUDE: 51.070620 * WEST-BOUND LONGITUDE: 10.895750 * NORTH-BOUND LATITUDE: 51.108160 * EAST-BOUND LONGITUDE: 10.930440 * DATE/TIME START: 2013-04-20T00:00:00 * DATE/TIME END: 2014-10-29T11:11:00 - 

Tipo de recurso: Dataset  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: CC-BY: Creative Commons Attribution 3.0 Unported

Formatos:  application/zip, 13 datasets - 

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] Supplement to: Truckenbrodt, Sina C; Schmullius, Christiane C (in prep.): Evolution of soil and plant parameters on the agricultural Gebesee test site (central Germany) in 2013 and 2014: a comprehensive database for the set-up and validation of the EO-LDAS.
[References] Description of investigated parameters (URI: http://store.pangaea.de/Publications/Truckenbrodt_Baade-2017/Parameter_description.pdf)
[References] Metadata on the cultivars and investigated fields (URI: http://store.pangaea.de/Publications/Truckenbrodt_Baade-2017/Metadata_cultivation_fields.pdf)

Fecha de contribución: 22-abr-2017

Contacto:

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