Centro Hispano Luso de Investigaciones Agrarias University of Salamanca (Spain) Water Resources Research Group (www.usal.es/hidrus) Recent cal/val activities at the REMEDHUS network (Spain) José Martínez-Fernández jmf@usal.es 2nd SMOS-VRT Workshop Lisboa, Portugal. 11-13 March 2009
REMEDHUS Soil Moisture Stations Network
REMEDHUS Site Climate: Semiarid continental Mediterranean (385 mm rainfall; 12 ºC temp.) Topography: Hilly area, gentle slopes, 750-900 m.a.s.l. Land use: Agriculture: rainfed cereal, irrigated crops, vineyards, others: pasture, forest,...
Land uses in REMEDHUS: rainfed and irrigated crops, vineyards, forest
Land uses Rainfed cereals: barley, wheat, (80%) Vineyards (4%) Pasture (valley bottoms, 2%) Irrigated crops: sugar beet, corn, alfalfa, (4%) Forest (patchy): pine, holm oak, (6%)
REMEDHUS Soil Moisture Stations Network (30 x 40 km, aprox.) Soil Moisture Station (ID) Longitude W Latitude N Altitude (masl) E10 5º 35 26 41º 16 34 870 F6 5º 32 46 41º 22 27 745 H11 5º 28 14 41º 14 08 835 J14 5º 23 45 41º 09 01 830 H13 5º 28 33 41º 11 02 900 J12 5º 24 44 41º 12 30 835 F11 5º 32 36 41º 14 26 855 Q8 5º 09 38 41º 18 48 735 H7 5º 29 20 41º 21 00 755 I3 5º 26 51 41º 27 56 690 I6 5º 25 38 41º 22 57 720 J3 5º 24 35 41º 27 24 665 L3 5º 21 26 41º 26 52 675 K10 5º 22 47 41º 15 58 745 K4 5º 22 23 41º 25 31 740 M5 5º 19 12 41º 23 42 750 O7 5º 13 25 41º 20 52 770 N9 5º 14 45 41º 18 05 765 M9 5º 17 56 41º 17 12 795 L7 5º 19 47 41º 21 30 790
REMEDHUS
Soil Moisture Stations Network: Experimental Layout TDR network 20 TDR SOIL MOISTURE STATIONS (5-100 cm depth), fortnightly measurements Tektronix 1502C cm 0 TDR stations 10 20 30 40 50
Soil Moisture Stations Network: Experimental Layout HYDRA network 20 AUTOMATIC SOIL MOISTURE SOIL TEMPERATURE STATIONS (5 cm depth), hourly measurements Hydra probes (Stevens Water Monitoring Systems Inc.)
SMOS CAL/VAL CAMPAIGN IN REMEDHUS AREA: RECENT ACTIVITIES 1. SMOS rehearsal simulation campaign (CNES/CESBIO) 2. SMOS End-to-end Performance Simulator (SEPS) (Universidad de Salamanca - Universitat Politècnica de Catalunya) 3. Intensive soil moisture measurement campaign Trial plots network (Universidad de Salamanca Vienna University of Technology) 4. GPS and RAdiometric Joint Observations (GRAJO) experiment (Universidad de Salamanca - Universitat Politècnica de Catalunya)
SMOS CAL/VAL CAMPAIGN IN REMEDHUS AREA. RECENT ACTIVITIES 1. SMOS rehearsal simulation campaign (CNES/CESBIO) Study area: REMEDHUS area (SPAIN) Experimental layout and sampling scheme: a) grid of 306 cells of 3x3 km area (18 columnsx17 rows). Each parameter is referred to the center of each cell (if data exists in every cell) for each date of SMOS. b) 20 soil (moisture+temperature )stations c) 3 weather stations Data LAI Land use Soil Moisture (0-5 cm) Soil Temperature (0-5 cm) Soil texture Air temperature Database period (related to SMOS simulated orbits) 03/26/08 to 05/05/08
Air Temp. 3 weather stations DUERO Castilla y León Portugal Duero Spain LAND USES (classification) LAI (MODIS 8days composite) Sand, silt and clay 0-5 cm depth. Weather Station Soil Temp 0-5 cm Soil Moisture 0-5 cm
2. SMOS End-to-end Performance Simulator (SEPS) (Universidad de Salamanca - Universitat Politècnica de Catalunya) Study area: REMEDHUS area (SPAIN) Experimental layout: a) 20 soil (moisture+temperature) stations b) 3 weather stations Data - Land uses - Soil Moisture (0-5 cm) - Soil Temperature (0-5 cm) - Air temperature and precipitation - Plant water content (cereals stations, 16) Database period 02/27 /07 to 07/03/07
2007 Cereal Growing Season During 2007 some other parameters were also measured: LAI, Equivalent Water Thickness, Biomass, Plant Height, percentage cover, but were not used in this model
3. Intensive soil moisture measurement campaign Trial plots network (Universidad de Salamanca Vienna University of Technology) Study area: REMEDHUS area (SPAIN) Experimental layout: Data Soil Moisture (0-5 cm) a) 65 field plots b) 20 soil moisture stations Objectives -Training network - Verification of Hydra network Database period 05/20/08 to 11/21/08 (nine sampling dates) Coinciding 6 overpasses of ASAR
- Soil Moisture (0-5 cm) - 4 measurements/plot
4. GPS and RAdiometric Joint Observations (GRAJO) experiment (Universidad de Salamanca - Universitat Politècnica de Catalunya) October 2008 December 2009
4. GPS and RAdiometric Joint Observations (GRAJO) experiment (Universidad de Salamanca - Universitat Politècnica de Catalunya)
4. GPS and RAdiometric Joint Observations (GRAJO) experiment (Universidad de Salamanca - Universitat Politècnica de Catalunya) Vegetation measurements Vegetation cover estimation (supervised classification) LAI estimation (leaf scanning) NDVI estimation (field spectroradiometer reflectivity)
4. GPS and RAdiometric Joint Observations (GRAJO) experiment (Universidad de Salamanca - Universitat Politècnica de Catalunya) Roughness measurements 3D terrestrial laser scanning (1.5 mm resolution) Sampling area of 20x20 m. High detailed Digital Elevation Model (grid=2 cm). Digital data set: dense "point cloud in 3D. Statistical analysis to obtain S and L parameters.
Roughness measurements Multi-view acquisition of Close-Photogrammetry Frame Digital elevation dataset (aprox 50x50 cm) Raw vertical profile (mm)
4. GPS and RAdiometric Joint Observations (GRAJO) experiment (Universidad de Salamanca - Universitat Politècnica de Catalunya) Soil Moisture and Temperature measurements Two soil moisture probes and two soil temperature probes per plot (0-5 cm depth) One soil moisture profile (probes at 5, 25, 50 and 70 cm depth) One soil temperature profile (probes at 5, 25, 50 and 70 cm depth) Sampling interval: 30 min. One Automatic Weather Station
4. GPS and RAdiometric Joint Observations (GRAJO) experiment (Universidad de Salamanca - Universitat Politècnica de Catalunya) Soil Moisture and Temperature measurements Bare soil Soil moisture (%) Barley Grass
Acknowledgements: - Nilda Sánchez-Martín - Carlos Pérez-Gutiérrez - Guido Baroncini-Turricchia - Jesús Álvarez-Mozos - Ana Cano - Luciana A. Magalhães - Pablo Méndez - The Passive Remote Sensing Group (UPC) and - ESA AO-3230 - Spanish National Research Programme: Project ESP2006-00643 Project ESP2007-65667-04 Project ESP2007-30837-E