Title :
On the assimilation of C-band radar data into CERES-wheat model
Author :
Dente, Laura ; Rinaldi, Michele ; Mattia, Francesco ; Satalino, Giuseppe
Author_Institution :
Ist. di Studi sui Sistemi Intelligenti per l´´Automazione, CNR, Bari
Abstract :
Based on recent experimental studies which have found a strong correlation between a multitemporal series of C-band HH/W backscatter ratios acquired at 40deg incidence angle and wheat biomass, this work investigates the effect of the assimilation of the radar retrieved information into CERES-Wheat crop model. A sensitivity analysis has shown that an inaccurate knowledge of some model inputs, concerning soil properties and crop management, can lead to erroneous predictions. However adopting a reinitialisation assimilation strategy, significant improvements in the model estimations have been obtained
Keywords :
crops; data assimilation; radar cross-sections; radar polarimetry; remote sensing by radar; soil; vegetation mapping; C-band HH/W backscatter ratio; CERES-Wheat model; crop management; multitemporal series; polarimetric C-band radar data assimilation; reinitialisation assimilation strategy; sensitivity analysis; soil properties; wheat biomass; Backscatter; Biomass; Crops; Information retrieval; Predictive models; Radar measurements; Remote sensing; Sensitivity analysis; Soil measurements; Spaceborne radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1368651
