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Anomean uses climatological (multiple year bins) harmonic coefficients to calculate  mean temperature, salinity, oxygen, density, oxygen saturation, and "spiciness"  for each CalCOFI station at standard depths. These values when compared to observed  values allow the derivation of anomalies based on climatological averages. Essentially,  you can calculate how hydrographic conditions (current observed data or archive data) compare to the long-term  average.

Current climatological bins are: 1950-1999; 1950-1976; 1950-1984;  1977-1999; 1984-1999; plus an older, obsolete format, calcofi.cof (1950-94).  More details on climatology.   Installation instructions.
( Installation files).

Anomean Opening Screen

The output format options are mean values and/or anomalies in  either comma-delimited columns or IEH-formatted data. IEH-formatted output facilitates  using IEH-compatible software to continue data processing or visualization.  Comma-delimited allows importing into spreadsheet, database, Matlab, or similar  applications.

Using Calculate Anomalies or Expected Values from Input File:

Anomean Module 1

Input format must be either IEH or CalCOFI e-mail/ISL format.  A browse feature will be added but until then, enter the exact filename with  path and extension. The output file naming is automatic but may be edited by  the user.

Output format: Note: all outputted depths are based on CalCOFI  standard levels.

  • SynIEH is a "synthetic" IEH with mean temperature, salinity,  oxygen values in the standard T, S, & O2 IEH columns. This allow the output  file to be processed by CalCOFI IEH data processing programs such as Vsplot,  which generates vertical sections for contouring.
  • AnomIEH places the temperature, salinity, and oxygen anomalies  (difference between observed minus mean) in the standard T, S, & O2 IEH  columns. Facilitates anomaly vertical section plots.
  • Exp+Anom Comma-delimited - Standard depth observed, mean and  anomaly values in comma-delimited columns.
  • Anom Comma-delimited - Standard depth anomaly values in comma-delimited  columns.

Coefficients File - select the coefficients set you want to calculate  the mean values. Note that coefficients files only include stations with enough  occupations to generate values with adequate confidence limits.

Generate Mean Values using Date/Station/Harmonics -

Anomean Module 2

This module will calculate mean values for CalCOFI stations based  on day-of-the-year and Line & Station using a selected coefficients file.  The user enter Month, Day, Year, Line & Sta - the program outputs mean values  for that Line/Sta at standard levels. Leave month blank for all 12 months; leave  Line and Sta blank for all stations (with coefficients).

Output options are: comma-delimited, html table, or Sta Files.  Comma-delimited is a single file containing all stations; html is mainly for  in-house/webpage related uses; Sta Files are individual station files for each  day selected. File naming for Sta Files are based on Line+Station+day_of_year.

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