Hello everyone, I’m using the NDR model to assess nutrient export in relation to changes in precipitation. I’m using a raster showing the average annual precipitation over my study area. This is my Nutrient runoff proxy. In QGIS, I created a new raster file that shows an increase of rainfall of 25…

Hi Marco - First, just wondering if only the patterns look the same, or if the underlying values are also the same. Did you increase all pixels in the precipitation raster by 25%? If so, I think you’re correct to note that the runoff proxy represents spatial variability. If you don’t have spatial …

Hello! I have a related question. I ran NDR with two precipitation rasters from different sources. The datasets are from the same year, have the same natural resolution, same units, and are both projected into the coordinate system I’m using in my study. There are slight differences in the average…

NDR model - Nutrient runoff proxy

Software Support

jdouglass April 12, 2022, 6:03pm 5

@atershy I think we might already be discussing this over in NDR: Runoff Proxy Index. Spatial extent of precipitation raster, so I’ll close this topic.

Topic		Replies	Views
NDR: Runoff Proxy Index. Spatial extent of precipitation raster Science, Research & Data ndr	3	680	May 23, 2022
No data value - NDR model Software Support ndr	7	740	November 30, 2021
Average Runoff Proxy (number, optional) parameter Science, Research & Data ndr	2	67	August 22, 2025
N an P export values in NDR Science, Research & Data ndr	1	355	June 9, 2021
Year-to-year changes of NDR Software Support ndr	3	67	October 22, 2024

NDR model - Nutrient runoff proxy

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