Comments (5)
It'd be good plotting the 9 grid cell cumulative precipitation to see if this is from an interpolation artefact or very different adjacent gridcell. This is a significant amount of precip.
from topopyscale.
this is the annual total for 2020, x mark the tscale point (this is Pamirs, Tj by the way):
from topopyscale.
somewhere 250-350mm in the 3x3, so not too extreme a gradient. By definition, interpolation is going to increase frequency though, right? As you are more likely to have precip in at least 1 of the 9 cells than the centre cell.
from topopyscale.
I think this is simply due to the inverse distance weighting approach using many neighbors (which I would recommend for speed and smoothness). If you have a large domain (lots of ERA5 grid cells) and use many neighbors, then you can have some drizzle everywhere in your domain as long as it's raining for one of the ERA5 grid cells. So it won't add much precip at all, but surely aritifically increases the frequency. The simple solution here is to just apply a threshold as Joel suggests, although I think 1 mm/day is too strict. I would recommend a much lower threshold, like 0.1 or even 0.01 mm/day since these artificial drizzle numbers should be quite small given the large distances involved in the interpolation.
from topopyscale.
I am running in the same issue. I have precip so often in Finse. I checked the code, and for the precipitation we do the IDW interpolation horizontally. If I pick one of the ERA5 cell in the vicinity, I obtained basically the same signal so our interpolation does not add precip. The problem is I think coming from ERA5 data itself.
from topopyscale.
Related Issues (20)
- Replacing multithreading with multicore computing whenever possible
- Adding support for timestep resolutino other than 1hr
- `point_id`, `cluster_labels` and `ID_col` are all confusing and create problem.
- Memory blowout on large domains HOT 15
- Wind direction and wind speed in NetCDF file result. HOT 1
- Xarray rasterio backend deprecation URGENT! HOT 3
- pd.date_range deprecated arg "closed" HOT 5
- requirement.yml HOT 2
- topo_da: getSamples_inModisPixel()
- topo_utils: FsmPlot() undefined variables HOT 2
- RuntimeError: NetCDF: Not a valid ID HOT 8
- Definition of point file HOT 4
- update Doc when adding config options HOT 6
- Issues after commit https://github.com/ArcticSnow/TopoPyScale/commit/5dc0f5772e47cc1b0b710d715658251190389620 HOT 20
- Not downscaling full time period HOT 3
- FSM output files indexing
- svf edge effect
- errors in to_fsm2oshd HOT 1
- AttributeError: 'Series' object has no attribute 'lat' HOT 4
- How to join output from all clusters into a single netcdf or tiff file? HOT 1
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from topopyscale.