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פותח על ידי קלירמאש פתרונות בע"מ -
Surface sealing effect on validation of remotely sensed soil moisture predictions
Year:
2013
Source of publication :
Geophysical Research Abstracts
Authors :
אסולין, שמואל
;
.
Volume :
15
Co-Authors:

Shai Sela ,Tal Svoray - ) Dept. of Geography and Environmental Development, Ben-Gurion University of the Negev, Israel

Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

Recent advances in remote sensing technologies have led spaceborn platforms to emerge as successful tools in studying and monitoring soil moisture dynamics. A common need for all remote sensing missions is intensive ground soil moisture samplings for validating predictions and the calibration of retrieval algorithms usually conducted using a network of soil moisture probes. These probes generally have a minimal size of approximately 5 cm, due to technical limits. When these probes are used for validation at the top soil layer, the validation depth is deeper than the sensor effective penetration depth generally of 0-3 cm, a bias which can affect validation results. In dryland areas, where physical sealing of the soil is a wide spread phenomenon, validation can be even more complex. The seal layer has different hydraulic parameters than the underlying soil, with a much lower hydraulic conductivity that affect both infiltration and evaporation fluxes.

Note:

EGU General Assembly 2013, held 7-12 April, 2013 in Vienna, Austria, id. EGU2013-4509

Related Files :
Ground area
remote sensing
Remote sensing techniques
Soil moisture dynamics
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
גוגל סקולר
Publication Type:
מאמר מתוך כינוס
;
.
Language:
אנגלית
Editors' remarks:
ID:
37553
Last updated date:
02/03/2022 17:27
Creation date:
14/10/2018 14:43
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Scientific Publication
Surface sealing effect on validation of remotely sensed soil moisture predictions
15

Shai Sela ,Tal Svoray - ) Dept. of Geography and Environmental Development, Ben-Gurion University of the Negev, Israel

Surface sealing effect on validation of remotely sensed soil moisture predictions .

Recent advances in remote sensing technologies have led spaceborn platforms to emerge as successful tools in studying and monitoring soil moisture dynamics. A common need for all remote sensing missions is intensive ground soil moisture samplings for validating predictions and the calibration of retrieval algorithms usually conducted using a network of soil moisture probes. These probes generally have a minimal size of approximately 5 cm, due to technical limits. When these probes are used for validation at the top soil layer, the validation depth is deeper than the sensor effective penetration depth generally of 0-3 cm, a bias which can affect validation results. In dryland areas, where physical sealing of the soil is a wide spread phenomenon, validation can be even more complex. The seal layer has different hydraulic parameters than the underlying soil, with a much lower hydraulic conductivity that affect both infiltration and evaporation fluxes.

EGU General Assembly 2013, held 7-12 April, 2013 in Vienna, Austria, id. EGU2013-4509

Scientific Publication
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