2018 Daily Downscaled ESA-CCI Soil Moisture Grids for Delaware, USA
| Authors: | |
|---|---|
| Owners: | Daniel L Warner |
| Type: | Resource |
| Storage: | The size of this resource is 2.2 GB |
| Created: | Nov 20, 2020 at 7:21 p.m. |
| Last updated: | Feb 14, 2022 at 4:06 p.m. (Metadata update) |
| Published date: | Feb 14, 2022 at 4:06 p.m. |
| DOI: | 10.4211/hs.81867bb55f134d8d89ec2250ae6c1014 |
| Citation: | See how to cite this resource |
| Sharing Status: | Published |
|---|---|
| Views: | 1560 |
| Downloads: | 22 |
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Abstract
The contained grids were derived by applying a novel downscaling methodology to the coarse, remotely-sensed ESA Climate Change Initiative Soil Moisture Product version 4.5. We employed an ensemble of kernel K-nearest neighbors models to refine the grid cell resolution from 27 km to 100 m using ancillary terrain data and interpolated meteorological observations. The downscaled grids were validated against independent surface soil moisture (SSM) network observations, which revealed an improved performance over the low resolution grids. Performance was further improved when grid cell values were normalized and then rescaled based on the daily SSM minima and maxima observed by the monitoring network. The downscaled grids are independent of vegetation and land cover data, allowing for investigations into spatial relationships between SSM, vegetation and land cover.
For a code example of the KKNN approach, see: https://github.com/warnerdl/DownscalingDelawareSSM
Subject Keywords
Coverage
Spatial
Temporal
| Start Date: | 01/15/2018 |
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| End Date: | 12/31/2018 |
Content
Related Resources
| The content of this resource is derived from | European Space Agency Climate Change Initiative - Soil Moisture Product version 4.5 https://www.esa-soilmoisture-cci.org/node/237 |
Credits
Contributors
People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.
| Name | Organization | Address | Phone | Author Identifiers |
|---|---|---|---|---|
| Mario Guevara | University of Delaware | |||
| Rodrigo Vargas | University of Delaware | |||
| Daniel Warner | University of Delaware;Delaware Geological Survey | Delaware, US | ||
| John Callahan | University of Delaware;Delaware Geological Survey |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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