I want to calculate the daily wind speed from the hourly data of reanalysis-era5-land, but the wind speed data has positive and negative values, and the positive and negative values express different directions.
So the data needs to be absolute. According to the official document, the abs function is used as abs= ct.operation.abs(data). I used temperature as an example to use the absolute value function, but an error occurred.
Has anyone successfully used the function? The source code is as follows:
import cdstoolbox as ct
@ct.application(title='Hello World!')
@ct.output.download()
def application():
data = ct.catalogue.retrieve(
'reanalysis-era5-land',
{
'variable': '2m_temperature',
'product_type': 'reanalysis',
'year': '2017',
'month': '01',
'day': '01',
'time': '1:00'
}
)
abs = ct.operation.abs(data)
return abs
the error is as following:
Traceback (most recent call last):
File "/opt/cdstoolbox/cdscompute/cdscompute/cdshandlers/services/handler.py", line 55, in handle_request
result = cached(context.method, proc, context, context.args, context.kwargs)
File "/opt/cdstoolbox/cdscompute/cdscompute/caching.py", line 108, in cached
result = proc(context, *context.args, **context.kwargs)
File "/opt/cdstoolbox/cdscompute/cdscompute/services.py", line 118, in __call__
return p(*args, **kwargs)
File "/opt/cdstoolbox/cdscompute/cdscompute/services.py", line 59, in __call__
return self.proc(context, *args, **kwargs)
File "/home/cds/cdsservices/services/retrieve.py", line 167, in execute
remote = context.call_resource(name, request)
File "/opt/cdstoolbox/cdscompute/cdscompute/context.py", line 295, in call_resource
return c.call_resource(service, *args, **kwargs).value
File "/opt/cdstoolbox/cdsworkflows/cdsworkflows/future.py", line 76, in value
raise self._result
cdsworkflows.error.ClientError: {'traceback': 'Traceback (most recent call last):
File "/opt/cdstoolbox/cdscompute/cdscompute/cdshandlers/services/handler.py", line 55, in handle_request
result = cached(context.method, proc, context, context.args, context.kwargs)
File "/opt/cdstoolbox/cdscompute/cdscompute/caching.py", line 108, in cached
result = proc(context, *context.args, **context.kwargs)
File "/opt/cdstoolbox/cdscompute/cdscompute/services.py", line 118, in __call__
return p(*args, **kwargs)
File "/opt/cdstoolbox/cdscompute/cdscompute/services.py", line 59, in __call__
return self.proc(context, *args, **kwargs)
File "/home/cds/cdsservices/services/mars.py", line 347, in internal
return mars(context, request, **kwargs)
File "/home/cds/cdsservices/services/mars.py", line 48, in mars
execute_mars(context, requests)
File "/home/cds/cdsservices/services/mars.py", line 192, in execute_mars
context.run_command("/usr/local/bin/mars", tmp, exception=MarsException)
File "/opt/cdstoolbox/cdscompute/cdscompute/context.py", line 207, in run_command
raise exception(call, proc.returncode, output)
home.cds.cdsservices.services.mars.py.MarsException: Mars server task finished in error - BadValue: Invalid time 1:00 [mars] - Error code is -2 - Request failed - Some errors reported
'}