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| Home > Publications database > Estimating the Number of Reference Sites Necessary for the Validation of Global Soil Moisture Products > print |
| 001 | 877860 | ||
| 005 | 20240715202020.0 | ||
| 024 | 7 | _ | |a 10.1109/LGRS.2020.3005730 |2 doi |
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| 100 | 1 | _ | |a Montzka, Carsten |0 P:(DE-Juel1)129506 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Estimating the Number of Reference Sites Necessary for the Validation of Global Soil Moisture Products |
| 260 | _ | _ | |a New York, NY |c 2020 |b IEEE |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a The Committee on Earth Observation Satellites (CEOS) Land Product Validation (LPV) subgroup has been established to coordinate the development of standardized validation across the satellite-derived products from different platforms, sensors, and algorithms with reference measurements from the in situ networks. Soil moisture exhibits a high variability in space that challenges the in situ validation. One of the main drivers for this variability is the characteristic heterogeneity in the soil texture. By the machine learning methods using the soil profile measurements and the remotely sensed predictors, spatially continuous maps of basic soil properties such as soil texture and bulk density are available. Those can be used to estimate soil moisture variability within a satellite product grid cell, here exemplarily shown for the Soil Moisture Active Passive (SMAP) 36-km product. The soil moisture standard deviation is described as a function of the mean soil moisture, whereby the approach needs the mean and standard deviation of the hydraulic parameters as input. The resulting global data set helps identifying the number of in situ stations necessary to validate the coarse soil moisture products. For most SMAP grid cells, three to four stations are adequate to estimate the mean soil moisture for validation; however, also regions were identified where 80 stations are necessary. |
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| 700 | 1 | _ | |a Herbst, Michael |0 P:(DE-Juel1)129469 |b 2 |u fzj |
| 700 | 1 | _ | |a Cosh, Michael H. |0 0000-0003-4776-1918 |b 3 |
| 700 | 1 | _ | |a Jagdhuber, Thomas |0 0000-0002-1760-2425 |b 4 |
| 700 | 1 | _ | |a Vereecken, Harry |0 P:(DE-Juel1)129549 |b 5 |
| 773 | _ | _ | |a 10.1109/LGRS.2020.3005730 |g p. 1 - 5 |0 PERI:(DE-600)2138738-2 |n 9 |p 1530 - 1534 |t IEEE geoscience and remote sensing letters |v 18 |y 2020 |x 1545-598X |
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