Hi,
I am experiencing a problem when trying to download wind speeds via the CDS API. Here is the error message:
Exception: the request you have submitted is not valid. Ambiguous : 100m_u_component_of_wind could be 10 METRE WIND GUST OF AT LEAST 10 METRE PER SECOND or WILDFIRE DRY MATTER COMBUSTION RATE DENSITY - Ambiguous : 100m_v_component_of_wind could be 10 METRE WIND GUST OF AT LEAST 10 METRE PER SECOND or WILDFIRE DRY MATTER COMBUSTION RATE DENSITY
And this is the script I use:
import cdsapi
c = cdsapi.Client()
c.retrieve(
'reanalysis-era5-land',
{
'expver': '0005',
'format': 'grib',
'variable': [
'100m_u_component_of_wind', '100m_v_component_of_wind',
],
'year': [
'2015', '2016', '2017',
'2018', '2019'
],
'month': [
'01', '02', '03',
'04', '05', '06',
'07', '08', '09',
'10', '11', '12'
],
'day': [
'01', '02', '03',
'04', '05', '06',
'07', '08', '09',
'10', '11', '12',
'13', '14', '15',
'16', '17', '18',
'19', '20', '21',
'22', '23', '24',
'25', '26', '27',
'28', '29', '30'
],
'time': [
'00:00', '01:00', '02:00',
'03:00', '04:00', '05:00',
'06:00', '07:00', '08:00',
'09:00', '10:00', '11:00',
'12:00', '13:00', '14:00',
'15:00', '16:00', '17:00',
'18:00', '19:00', '20:00',
'21:00', '22:00', '23:00'
],
'area': [float(lat)+0.125, float(lon)-0.125, float(lat)-0.125, float(lon)+0.125],
'grid': ['0.25', '0.25']
},
'/download_5years_2vars.grib'
)
Can you think of any way to address this issue? Btw, downloading the variable "10m_u_component_of_wind" worked fine.
4 Comments
Michela Giusti
Hi,
the
'100m_u_component_of_wind','100m_v_component_of_wind'are not available in ERA5-Land. You can donwload them from ERA5.Regards
Michela
Georg Helbing
Thank you Michela!
Teodoro La Rocca
Hi,
I've the same problem trying to download 2PVU as PV level and Potenttial temperature as variable (vertical coordinate); here is the error message:
Exception: the request you have submitted is not valid. Ambiguous parameter: potential_vorticity_level could be PROCESS or PPENGINE - No request.;
and the relative script:
import cdsapi
>>>
>>> c = cdsapi.Client()
>>>
>>> c.retrieve(
... 'reanalysis-era5-single-levels-monthly-means',
... {
... 'product_type': 'monthly_averaged_reanalysis',
... 'variable': 'potential_temperature',
... 'potential_vorticity_level': '2000',
... 'year': '2020',
... 'month': '01',
... 'time': '00:00',
... 'format': 'netcdf',
... }
... )
Thanks a lot.
Michela Giusti
Hi,
this is a code example:
#!/usr/bin/env python import cdsapi c = cdsapi.Client() c.retrieve('reanalysis-era5-complete', { 'class': 'ea', 'date': '20200101', 'decade': '2020', 'expver': '1', 'levelist': '2000', 'levtype': 'pv', 'param': '3.128', 'stream': 'moda', 'grid': '0.25/0.25', # Latitude/longitude. Default: spherical harmonics or reduced Gaussian grid 'format': 'netcdf', 'type': 'an', }, 'output.nc')Please have a look at the following links for more details:
ERA5: data documentation#DataorganisationandhowtodownloadERA5
How to download ERA5#OptionB:DownloadERA5familydatathatisNOTlistedintheCDSonlinecatalogue-SLOWACCESS
Please be aware that there is an additional queueing system for downloading ERA5 complete data from the ECMWF's MARS archive - expect several hours to several days for submitted requests to complete at this time. You can check the Live status of your request
Thanks
Michela