High resolution soil moisture applications
Satellite(s)Multiple (SMAP, AMSR-E, Sentinel-2). | Monitoring elementPassive/active microwave backscatter. |
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Description techniqueVandersat high resolution soil moisture datasets use a combination of active and passive radar microwaves. | Accuracy / Resolution100m. |
Case studyMainly used as near real time product by farmers throughout the world (e.g. for drought insurance products) or by water authorities. Possible testing is underway by GNS Science in Northland. | |
Also fits domainFreshwater, Land. | |
Benefits
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Applicability for NorthlandYes, it could be used for drought studies, initially to get coverage of whole region of historic data. If validated, near-real time delivery is feasible. | |
Publication references | |
Other comments or informationOther products available, such as land surface temperature and biomass for farmers: | |
Other referencesAlbergel, C., Rüdiger, C., Pellarin, T., Calvet, J.-C., Fritz, N., Froissard, F., Suquia, D., Petitpa, A., Piguet, B., Martin, E. 2008. From near-surface to root-zone soil moisture using an exponential filter: an assessment of the method based on in-situ observations and model simulations. Hydrol. Earth Syst. Sci. 12: 1323-1337. https://hess.copernicus.org/articles/12/1323/2008/ Paulik, C., Dorigo, W., Wagner, W., & Kidd, R. 2014. Validation of the ASCAT Soil Water Index using in situ data from the International Soil Moisture Network. International Journal of Applied Earth Observation and Geoinformation, 30, 1-8 https://www.sciencedirect.com/science/article/pii/S0303243414000099 Wagner, W., Lemoine, G., Rott. H. 1999a. A Method for Estimating Soil Moisture from ERS Scatterometer and Soil Data. Remote Sensing of Environment 70 (2). Elsevier: 191–207. https://www.sciencedirect.com/science/article/pii/S003442579900036X |