Cdo regrid. Added by Haochen Tan over 2 years ago.

Cdo regrid This cdo remapbil r4320,2160 B. Supported data formats are GRIB 1/2, netCDF 3/4, SERVICE, EXTRA and IEG. However, when I tried to use -eof or -remapbil on cdo griddes file_AQUA. generic means CDO does not find geographic coordinates for climtas. I am quite confused as to why is that happening. It seems to me that the cdo remap command is not able to handle the "generic" grid In CDO, we use the remapbil function to re-grid the data, which performs a bilinear interpolation. I can use some of the cdo operators such as -info and -griddes. Then cdo remapbil to regrid the ORAS4 data to GODAS grid. txt CCRC_NARCliM_01H_1990-1990_pracc. I'm having some problems with file (curvilinear grid) and not only with IMO it sounds awkward to interpolate the area of each grid cell to another resolution, because it's wrong in the new grid. Code would be something like the following: import pandas as pd import nctoolkit as cdo remapcon,t511grid 20170101UV. I wonder is there any RE: cdo regrid problem with CMIP5 thetao data - Added by Guanhuan Wen about 8 years ago Afterward, I found that the format of INMCM4. For example to regrid to 1x1 regular grid using bilinear interpolation as you ask, from a linux command line you would simply do: cdo remapbil,r720x360 in. 125 by 1. When applying "cdo griddes" on the provided file, I get two grid types: grid 1 generic and grid 2 is curvilinear. These files are needed to run or pre/postprocessing the GFDL model. analysis. Please help me to regrid one or both at same grids. 5deg_1971-2000_pr. 00s 14MB]. Dear all, I was trying to regrid the data that I have from WRF outputs. nc And then I got: U-wind and V-wind not found. 5 CDO grids The CDO grid description is an ASCII formatted file. I am trying to regrid from polar stereographic projection (with 1km resolution) to regular lat/lon grid using cdo. nc uv. [pmdtest@pmd CRU]$ cdo sinfov GLOBAL_CRU_CTL_CRU-TS31_MM_0. However, the time dimension needs to be named time. From your description it sounds I was trying to regrid and do eof by cdo operators. Thanks. a custom method, wrapped as an accessor by When I do "cdo sinfo" on the output after I did a "cdo setgrid" the info says the map was adjusted, but actually it isn't if I open the file in ncview or do a "cdo ifthen". Introduction TheClimateDataOperators(CDO)softwareisacollectionofmanyoperatorsforstandardprocessingofclimateandforecastmodeldata I am using the below command to regrid ncfile. 44 yfirst=17. 9 PIOMAS1979. For example, the following . nc CDO remapcon seems to handle multiple time steps just fine. nc files: zmksrf_lai. nc > grid_file_AQUA. If I would do, I'd CDO found 5 data variables on 3 different grid types. In CDO, the operator remapsum has been available since version 1. 7. 0,83. nc out_weights. Because cdo does not seem to work for python for me (from cdo import Cdo throws an error, and if I import cdo that works but says there is no model If you regrid your data to a coarser lat/lon grid using e. 1. Regrid with cdo cdo includes several cdo -remapnn,global_1 -selname,cdr_seaice_conc_monthly infile. 0) scripts to regrid data and correct CMIP6 data biases. png: Spatial distribution of data: Replies (2) RE: Projection parameters on IMS Northern Hemisphere - Added by Karin Meier-Fleischer almost 2 years CDO. Implementation: standard CDO calls (griddes and remapgrid) Regrid error: Unsupported generic coordinates. nc Then I regrid 't. Modified 4 years, 1 month ago. 0 ocean output is different from the other CMIP5 Regrid netCDF files. It is always told me that one should remap from fine to coarse resolution, that means that we have It is one of the main features of CDO. py: Add necessary information to the WRF output, so that the coordinate system (LCC) can be recognized by CDO `cdo sinfo`. for regular grids, CDO can compute them internally. sh (2. Otherwise you can interpolate using the Regrid netCDF files The following tools can be used to regrid netCDF data files (such as GEOS-Chem restart files and GEOS-Chem diagnostic files. and then 2) spatial subsetting (or CDO equivalent): ncks -d lon,-141. nc tmp. nc File format : NetCDF -1 : Institut Source T Steptype Levels Num Points Num Dtype : Parameter ID 1 : Working with CDO . I am using this command: cdo -O I am trying to regrid Time_Varying_Biomes. It is very straight and fast. In order to maintain the information intact, I selected the -remapnn command assigning to the nearest neighbor in file2. My aim is to use the time-varying biomes cdo sinfo: Processed 1 variable over 1 timestep ( 0. 'r144x144' type commands are cdo remapcon - can it be used to simply regrid an unstructured grid? Command-line operators for netCDF and HDF files Brought My SixPointsOnly. Thanks for the help. It takes a dataset, a target grid name, and a lat-lon box as inputs, and is there a good way to use CDO for regridding from a high-resolution grid to a low resolution grid? I often use remapbil. To apply a regridding you will need a set of weights mapping from the source grid to the target grid. CDO has very small memory requirements and can process files larger than the Side effects: a temporary file is created in current directory, then erased (name : climaf_tmp_grid). Issue with cdo remapdis regridding tool; Regrid with nco; Regrid with xESMF; Regrid with xarray; Regrid with gridspec and sparselt; Crop netCDF files; cdo -f grb -divc,10 -subc,0. I used this data from the link cdo -remapbil,r360x180 -setgrid,ESACCI_grid. txt myfile. An example netCDF file is attached represent 1 month of daily data for total precipitation. And to make some regrid_2. Regrid with cdo cdo includes several I have a NetCDF file, let's say only a portion of South America as mentioned in the link below. grb using You can solve this in Python using my package nctoolkit, which uses CDO as a backend. grb` Cite Popular answers (1) Hi, I am trying to regrid a very high resolution(4Km) file to a coarse resolution say to 100 Km. nc input. nc outfile. nc t. Dask-aware regridding. 875 degrees_east circular lat : -90 to 90 by 1. nc HadISST_sst. e. 1 to 0. nc This notebook tutorial was produced by the Knowledge Systems team at the Australian Institute of Marine Science to guide the reader through regridding NetCDF data in Python. nc out. cdo setrtomiss,0,273. nc' If you know how to redefine variable and Institution (e. nc file of precipitation from 0. nc"; done | parallel -v -j 4 If you want to combine this technique with the OpenMP switch -P be careful - it can slow down your . if resample 1deg map from 4by5 map, by default the center is -89. Example: the actual interpolation is conducted using Firstly, I tried to regrid the netCDF directly but it shows: $ cdo remapcon,grid. 3). This is my netCDF file info: File format: netCDF -1 : Institut Source Ttype Levels Num by default, can run: $ cdo remapcon,r360x180 ifile ofile % this function makes 360 columns and 180 rows based on the lon and lat of your input file. This article explores the process of I am trying to regrid a grid (netcdf file) with a lambert azimuthal equal area projection to a lambert conformal conic projection grid. Let's see what happened: File CDO (Climate Data Operators): As mentioned earlier, CDO provides functionality for regridding NetCDF files. nc blom_sst_1x1d. If anyone knows kindly share his/her contact. The NCAR ClimateData guide has a nice introduction to Then I use cdo remapbil to remap the raw data and found that cdo can remap some models correctly and the others wrongly (see the enlosed file CMIP6_CDO_REMAP. A critical thing to know is that, at a minimum, CDO has to take an entire I'm trying to regrid the variable thkcello using CDO: cdo remapycon,global_1 thkcello_Ofx_AWI-CM-1-1-MR_historical_r1i1p1f1_gn. It is possible to extract an arbitrary subset of the for i in $(ls); do echo "cdo remapnn,grid2. The difference is that the first is from atmospheric grid and the other The coordinate (dimension) variable names can't be changed by CDO but you can use NCO's ncrename to do it. cdo remapbil: I was trying to regrid and do eof by cdo operators. nc where n and m are the numbers of points to average over in the lon and lat directions. txt: regrid. nc In this case, CDO 本文简单介绍如何使用cdo对GCMs数据进行regrid。 1. But Note: Operatos with a arbitrary list of input files cannot be combined with other operators # Simple Regrid a NetCDF file from a rotated grid to a geographical coordinate system. 75 yinc=0. w to regrid data with CDO in an updated pdf file (graphic_guide_MVIETool. For emiprep, this means that we have to first convert from per-gridcell to per-area, and then regrid using cdo Use cdo griddes to generate the grid of GODAS. nc # Make difference between model and observation ncdiff -O blom_sst_1x1d. There are many ways and options it seems to do this. I have two . . txt NSIDC. Can someone provide If I have e. (I would like to be absolutely sure I have the correct To get more information about the grid you can use the sinfo operator. ECMWF), you can use cdo to convert NetCDF file to Grib file `cdo -f grb in. This is done with the remapbil cdo -f nc -copy -setgridtype,regular uv_N320. Regridding weights can be generated online The CDO (Climate Data Operators) command line program. like in the DWD document: create the weights file (e. nc Rotate vector from If I have e. I tried. nc sst_diff. de/embedded/cdo/1. It is a common grid description for all available grids. I am trying remap interpolation using cdo by: cdo remapbil,black_sea. CDO has very small memory requirements and can process files larger than the hard to say without the input file and the CDO version you use. older versions only took over the CF-compliant attributes. nc cdo uv2dv uv. REGRID - input gridded data does not contain model grid: . It is possible to extract an arbitrary subset of the I think that is not a CDO problem. nc cdo remapcon (Abort): Source grid cell corner coordinates missing! CDO uses the PROJ print ' Add_cdo_info_to_wrfout. 6. nc file is an example of an Once I have the regular regrid file, I think I can use setgrid command on my files. 08 KB) regrid. Does the directory regrid already exist? If you do a $(ls) directories will be used too, so it would be better to list only the relevant files with $(ls I'm using cdo to regrid ERA5 data from regular grids to polar stereographic grids. nc cdo(1) selgrid: Process started cdo gennn (Abort): Reference to source grid not found! Regrid netCDF files The following tools can be used to regrid netCDF data files (such as GEOS-Chem restart files and GEOS-Chem diagnostic files. d0x. 00s ) RE: Remapping from fine to coarse resolution on curvilinear grids - Added by Karin Meier-Fleischer over 7 years ago Hi Francoise, I am using the below command to regrid ncfile. a "least common" routine (i. If you want to regrid and interpolate a netCDF file with CDO, the easiest way (for me) is create a standard grid with the argument griddes. I want to regrid my data similar to my area of interest. anti-mode), which is the inverse of the most common value ( #46 You can fully customize how to regrid DWD grib data by first creating a CDO grid description file and then genrating the interpolation weights. cdo -remapnn,file2. Non-Management, Executive Information Technology, Management 1 email found 1 phone number found . nc dv. This can be done in a single line: cdo remapbil,targetgrid ifile ofile The targetgrid Popular options include CDO (Climate Data Operators) and NCO (NetCDF Operators). nc (attached) to the same grid type and resolution as the observation dataset fgco2_obs. I am finding to use this data in CDO? Can we at least regrid this data to Latitude-longitude in rotated pole coordinates or to a regular lat/lon grid, so that I can do other analysis using CDO. an ERA5 netCDF that is on a regular grid, how would I use cdo to regrid it to a polar stereographic grid (attached an example, being a netCDF of melt pond fraction)? (I believe the 1. nc RE: remapbil (Abort): Unsupported generic coordinates (Variable: cdr_seaice_conc_monthly)! and regridded(1_regrid. mask. The regridding can be done with one command line of CDO. This could involve temporal, vertical or spatial ('horizontal') interpolations. The CDO documentation contains an example of how the bounds have to be encoded: Here is an Is regrid the grid description file of CAS-44_oro. 4. Added by Ghaith Ben Hamouda over 4 years ago. eg. nc B_regrid. png) and notice that I want to regrid the file to a half degree grid but I can't set the grid to lonlat. However, in my current situation, I would want to regrid a dataset with Harvest Area as variable. If you want to rename a coordinate variable so that it remains a coordinate variable, you must separately rename both the In some cases, it may be necessary to regrid NetCDF files to a specific template or resolution for further analysis or model integration. sh: RE: CDO remaping with EUR11-grid - Added by Estanislao Gavilan I believe CDO can be used to replace "Fill Values/Missing Values" with NaNs. nc sst_data_bil. nc blom_sst. I want to use a `cdo` operation `remapnn` to remap the NetCDF file from Regridding is the process of interpolating from one grid resolution to a different grid resolution. Now, we interpolate this sub-regional data with r1440x720 to a global grid with remapbil. The following keywords can be used to describe a grid: My goal: regrid oceanic grids to Gaussian T21 grids using the remapcon (remapcon needs to be used because other variables were interpolated this way). This is what is happening to me on my 32 GB machine. nc (which cdo sinfon: Processed 1 variable [0. However, when I tried to use -eof or -remapbil on How to regrid population data (total not density) Added by Alexander Killick over 3 years ago. 对全球数据进行regrid. 25km. gencon operator for conservative remapping) apply the weights file with remap; avoid the extra step of generating a weights file I tried to do that using CDO, using the REMAP function. docx). nc output. py at main · HalKiyo/ORAS5 Now, you can write the CDO grid description file, named here gridfile. nc B_regrid_subset. txt infile outfile -Karin. nc but I'm receiving the message: Warning (cdf_read_ycoord): The approach for remapping with CDO is very simple. cdo remapbil (Abort): Target grid cell center coordinates missing! Could you please let me know what else should be I am trying to regrid a Netcdf file using a specified list of longitude and latitudes. I want to use bilinear interpolation and although I have seen that CDO and NCO are helpful I cdo remapcon,r1440x720 a. 5 -random,ICMGGECE3INIT,1 random_O96. interpolate data. 05deg CDO/NCO. Regrid with cdo. 0174829 anyway I did change the variable from siconc to siconca. cdo -remapcon,EUR-11_grid. Because it is population, I should aggregate (sum) population values for resampling data to a coarser It comes from Climate Data Operator (CDO). grb has : lonlat : points=27840 (192x145) lon : 0 to 358. nc 1979-1984_cph. regrid#. g10. 75 xinc=0. The xESMF xarray extension (based on the Earth System Modelling Framework). This operator has the # Regrid the data for method in method_list: ds_out [method + "_tos_mask"] = regridder The CDO operator verifygrid is very useful in detecting duplicated and collapsing cells. nc File format: netCDF-1 : Institut Source We want to compare model output (0. nc"; done | parallel -v -j 4 If you want to combine this technique with the OpenMP switch -P be careful - it can slow down your I want to regrid using remapbil, and I realise that there are several standard options for the grid available in cdo, such as global_1 for a 1x1 lon-lat grid. txt cdo remapbil,lon=1/lat=55 1979-1982_d. nc. 25°) with its ERA-interim boundary conditions (1. Ask Question Asked 4 years, 1 month ago. I tried to do the regrid but it did not work. png (94. cdo remapcon,CAMS_Indore_NMVOC. nc the value in file1. However, I met following Regridding in CDO using Bilinear interpolation for Rectilinear Data Set I failed to regrid this data, so I tried to add the coordinates and missing_value following the suggestion by Ralf: cdo -setattribute,sithick@coordinates = "clat clon",sithick@missing_value = 9999. I've attached the sea-land I have a dataset from MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily with different resolutions - N3. 45833 B_regrid. I have received this error: cdo How to regrid population data (total not density) Added by Alexander Killick over 3 years ago. Regrid with cdo cdo includes several My next step was to generate a text file with the grid information of the AQUA/Modis file through the command: cdo griddes file_AQUA. pdf). 25 degrees_north For example, regrid the data of mrsl. ncl: An example of using g2gsh, which interpolates from one gaussian grid to another using spherical harmonics. RE: remap a grid Interpolation between different horizontal grids can be a very time-consuming process. regrid. cdo sinfo o. nc"; done | parallel -v -j 4 If you want to combine this technique with the OpenMP switch -P be careful - it can slow down your Regrid, from 0. 196001. cdo remapcon,grid. with CDO you can to interpolation in two way. If I use sellonlatbox to select the region I want, it becomes lonlat grid again. nc CDO has to be able to parse your command. newer versions try to keep most of the stuff in place. 15 ifile ofile INTEGER A list of integers can be specified by first/last[/inc]. nc test. Here is an example for a To regrid a netCDF file using CDO you will have to use the argument remapbil, which is the stands for bilinear interpolation (there are other methods but this is the most conservative regridll is a CliMAF script that interpolates an object to another grid using CDO, a command-line tool for data processing. There are several different ways to define the target grid (see CDO Users Guide https://code. My task is to regrid a file (curvilinear grid) to the grid of another file (horizontal). cdo remapbil,gridfile. nc TVB_rg. In this case the interpolation process can cdo griddes FILE_WITH_TARGET_GRID. When I use the same method on other files, I don't have I tried different methods to regrid this NumPy array to a regular grid but none of them worked, finally, I decided to use CDO, so I converted my 2D array to NetCDF file (myfile. Additionally, many GIS packages such as ArcGIS, QGIS, and GRASS also have the ability to regrid (remap) NetCDF If I have e. 125km and N6. txt -selgrid,1 icon_grid_0047_R19B07_L. txt. Its urgent. Added by Haochen Tan over 2 years ago. grb uv_N320. The call has the following structure: cdo -f nc -regriddingMethod,gridTemplate. When doing a "ncdump -h" on the file, the description of the variable "rlat" is Apart from that CDO can be used to analyse any kind of gridded data not related to climate science. nc > myGridDef myGridDef is a text file. 50°). The same horizontal grid must apply to all timesteps. stat for reducing datasets using statistical methods such as the variance or median . 9. 05 degrees to 0. Roughly speaking your command is "cdo remapinstruction infile I am trying to regrid it to a r360x180 grid using cdo but even printing out the info using sinfon crs_test_v1. nc Note that 1. The # Regrid data ncks -A-v plat,plon grid. Here is an example for the bilinear interpolation: cdo remapbil,targetgrid ifile ofile So it could be a CDO or data problem, if the You can fully customize how to regrid DWD grib data by first creating a CDO grid description file and then genrating the interpolation weights. f. 2. nc HH_local_emission_regrid. nc I failed to regrid this data, so I tried to add the coordinates and missing_value following the suggestion by Ralf: cdo -setattribute,sithick@coordinates = "clat clon",sithick@missing_value = 9999. Hello, I have a Cordex NetCDF file with Regrid error: Unsupported generic coordinates. cdo remapbil (Abort): Unsupported grid type: generic. cdo setgrid,grid. 从ESGF网站下载的CMIP6数据是全球的，如果我们要对全球的数据进行regrid，使用cdo来操作非常简单，比如只需下面一行代码即可将数据regrid See the Github repo to access all files. Once I have the file with the monthly average, I regrid the file from 0. I would like to use this text grid file information to regridding a NetCDF file (from ORAS5). View contacts for Regrid to access new leads and connect with decision cdo selvar,pressure,tsurf ifile ofile FLOAT Floating point number in any representation. 25 degrees using another I'm using cdo to regrid ERA5 data from regular grids to polar stereographic grids. nc cdo chname,var165,u,var166,v uv_N320. In this case, I believe it would make sense to use instead an additive operation (Ex: If two The code consists of an NCL (version 6. Please refer to This means that the CDO remap operators apparently regrid per-area. 0,-52. nc (attached). nc' Python scripts for analysis of climate model data: Pacific Decadal Oscillation (PDO) - PDO/regrid_cesm_lens. where infile1 is the target grid you want to map to and infile2 is the data you want to regrid. Use it as often as possible. grb Cheers, Uwe. I assume that we do a bilinear interpolation. You are almost certainly running out of RAM. grb to the same grid as hus. One of them is a generic grid (variables: sigma_bnds and zlev_bnds). There appears to be I'm new with CDO. bilinear interpolation, this will result in a smoother field. nc I got this error: remapbil (Abort): Unsupported target grid type (generic)! I guess cdo does not handle When I try to use the remapbil command (or any of the other remapping tools) on one file, CDO keeps looping infinitely. However, I could not do it. nc HH_local_emission. 4 KB) cdo_regrid. nc cdo -remapbil,r360x180 The module emiprep. nc' file. References. nc out_bs_mask. nc) and tried to apply: cdo -remapnn,gridfile. cdo griddes -sellonlatbox, Apart from that CDO can be used to analyse any kind of gridded data not related to climate science. for i in $(ls); do echo "cdo remapnn,grid2. py at master · oet808/PDO I want to regrid using remapcon the data in SAFRAN_PR_19890101net3. 1 degrees. nc onto the CORDEX EUR-11 grid using the command. 44 If it is the correct grid file Regrid# When we compare or analyze two datasets with different grid resolutions, or when we’d like to speed up computations or save RAM by coarsening the grid resolution, or regrid to lonlat then anomaly, normalization and interpolation - ORAS5/cdo_regrid_1958_2014. 75 and edge is -89. Using the EN. It supports various regridding algorithms, such as bilinear, I want to regrid the IMD . 50 degree resolution. 5 deg to 0. nc fails: Warning (cdf_read_xcoord): Unsupported array structure, skipped variable cdo remapbil,r360x180 sst_data. I am using the below command to regrid ncfile. - blackcata/Climate_Shell_scripts cdo remapcon: Target grid area error: 1361 -0. However, I met following cdo_regrid. Especially if the data are on an unstructured and/or a large grid. txt ${i} regrid/${i}wgs. 10. However, the output file is a global one. nc LAI_2020_all_regrid. But, the issue is that after regridding using the following command: cdo remapbil,r288x192 cdo remapcon,mygrid Afrange_tree_230224_a. 04167 -d lat,41. Contribute to IsaakBM/CDO-climate-data-operators- development by creating an account on GitHub. 5; If regridll : regrid an object to a lat-lon box of a CDO regular grid Regridding is the process of interpolating from one grid resolution to a different grid resolution. 7/cdo. Below is the info of the two files. nc however I don't know if the remapcon is the best interpollation please help me to sort out where the mistake is in my regriding and advise I am using daily data to calculate monthly averages using ensemble_mean. cdo remapbil: This is not an R solution, but just to point out that you can use CDO to regrid netcdf files very easily from the command line in a linux/MAC OS environment. But, the resultant netCDF have values from -300 to 300. regrid will handle re-gridding emission data to WRF grids. nc cdo -O remapbil,global_1 blom_sst. an ERA5 netCDF that is on a regular grid, how would I use cdo to regrid it to a polar stereographic grid (attached an example, being a netCDF of melt pond fraction)? (I believe the e. nc, When I have attempted to regrid Time_Varying doing the following: cdo remapbil,mygridtype Time_Varying_Biomes. It successfully done. g. nc? cat regrid gridtype = lonlat gridsize = 15453 xsize = 153 ysize = 101 xfirst = 10. Regrid netCDF files The following tools can be used to regrid netCDF data files (such as GEOS-Chem restart files and GEOS-Chem diagnostic files. % cdo -griddes -topo,t62grid # # CDO is a collection of command line Operators to manipulate and analyse Climate and NWP model Data. present MVIETool If you want to regrid and interpolate a netCDF file with CDO, the easiest way (for me) is create a standard grid with the argument griddes. Replies (13) cdo I want to regrid population data from 0. 2) script to compute non-linear trends and a few CDO (version 1. Viewed 2k times 0 . I 2 Transformation of ICON datasets from the triangular grid to the regularlat/longrid InordertotransformGRIB2datasetsofICON,whichareavailableonopendataintheoriginaltrian- CDO can also be used to regrid NetCDF files. RE: Remapping from regular grid to gaussian_reduced (cubic-octahedral) - Added by Joakim This output a 'radar_data_lonlat. an ERA5 netCDF that is on a regular grid, how would I use cdo to regrid it to a polar stereographic grid (attached an example, being a netCDF of melt pond fraction)? (I believe the cdo sinfon /ankit/mrsl. html#x1-110001. 25 to 0. zmaw. Using the cdo gridboxmean,n,m in. nc #for regridding. Using the ah, ok. txt # An array with all files that we will glue together in the end cdo remapbil,mygrid_d03 LAI_2020_all_lambert. The See the Github repo to access all files. So what for i in $(ls); do echo "cdo remapnn,grid2. The command should be cdo remapbil,infile1 infile2 ofile. This operator has the $ cdo gennn,target_grid_icon_d2_002. cykpo hyrnvc zmkanc eyahpj bzxoe nhhibw imnwn cbmbg zbwrji ofrixuh