Correlation Question

Dear All,

I would like to make a month to month correlation. I would like to correlate 1 month of sst(lat,lon,time) with 1 month of precipitation which actually is 1 value. Is it possible? Attached is my script and below is the output. Please let me know, what I can do if it is possible.

Variable: sst_anom
Type: float
Total Size: 105408000 bytes
            26352000 values
Number of Dimensions: 3
Dimensions and sizes: [lat | 100] x [lon | 360] x [time | 732]
Coordinates:
            lat: [49.5..-49.5]
            lon: [-179.5..179.5]
            time: [194601..200612]
Number Of Attributes: 12
  anomaly_op_ncl : Annual Cycle Removed:function rmMonAnnCycLLT:contributed.ncl
  description : HadISST 1.1 monthly average sea surface temperature
  actual_range : ( -1.8, 34.76296 )
  missing_value : -1e+30
  _FillValue : -1e+30
  scale_factor : 1
  cell_methods : time: lat: lon: mean
  add_offset : 0
  units : degC
  standard_name : sea_surface_temperature
  long_name : Monthly 1 degree resolution SST
  reference : function rmMonAnnCycLLT in contrib.ncl
(0)
(0) Monthly 1 degree resolution SST: min=-8.70077 max=6.98223

Variable: sst_anom_jan
Type: float
Total Size: 144000 bytes
            36000 values
Number of Dimensions: 3
Dimensions and sizes: [lat | 100] x [lon | 360] x [time | 1]
Coordinates:
            lat: [49.5..-49.5]
            lon: [-179.5..179.5]
            time: [199301..199301]
Number Of Attributes: 12
  reference : function rmMonAnnCycLLT in contrib.ncl
  long_name : Monthly 1 degree resolution SST
  standard_name : sea_surface_temperature
  units : degC
  add_offset : 0
  cell_methods : time: lat: lon: mean
  scale_factor : 1
  _FillValue : -1e+30
  missing_value : -1e+30
  actual_range : ( -1.8, 34.76296 )
  description : HadISST 1.1 monthly average sea surface temperature
  anomaly_op_ncl : Annual Cycle Removed:function rmMonAnnCycLLT:contributed.ncl
(0)
(0) Monthly 1 degree resolution SST: min=-2.4631 max=2.59599

Variable: precipanom_data_ts
Type: float
Total Size: 2928 bytes
            732 values
Number of Dimensions: 1
Dimensions and sizes: [time | 732]
Coordinates:
            time: [194601..200612]
Number Of Attributes: 1
  _FillValue : 9.96921e+36
(0)
(0) min=-1.73324 max=3.01711

Variable: precipJJA1993
Type: float
Total Size: 4 bytes
            1 values
Number of Dimensions: 1
Dimensions and sizes: [time | 1]
Coordinates:
            time: [199307..199307]
Number Of Attributes: 2
  _FillValue : 9.96921e+36
  NMO : 6
(0)
(0) min=0.267831 max=0.267831
warning:escorc: Non-fatal conditions encountered in series or xstd equals zero.
Possibly, all values of a series are constant.

warning:escorc: Most likely, one or more series consisted of all constant values

Variable: corr
Type: float
Total Size: 144000 bytes
            36000 values
Number of Dimensions: 2
Dimensions and sizes: [100] x [360]
Coordinates:
Number Of Attributes: 1
  _FillValue : -1e+30
(0)
(0) min=-1e+30 max=-1e+30

Regards,
Nkese.

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