served from IRI/LDEO Climate Data Library

*Lead*- grid: /L (months) ordered (0.5 months) to (11.5 months) by 1.0 N= 12 pts :grid
*M*- grid: /M (unitless) ordered (1.0) to (10.0) by 1.0 N= 10 pts :grid
*Pressure Level*(air_pressure)- grid: /P2 (hPa) ordered (500 hPa) to (200 hPa) N= 2 pts :grid
*Forecast Start Time*(forecast_reference_time)- grid: /S (months since 1960-01-01) ordered (0000 1 Jan 1981) to (0000 1 Dec 2018) by 1.0 N= 456 pts :grid
*longitude*(longitude)- grid: /X (degree_east) periodic (0) to (1W) by 1.0 N= 360 pts :grid
*latitude*(latitude)- grid: /Y (degree_north) ordered (90S) to (90N) by 1.0 N= 181 pts :grid

*bufferwordsize*- 4
*datatype*- realarraytype
*grib_name*- HGT
*gribPDSpattern*- 04XXXX
*missing_value*- 9.99900026E20
*pointwidth*- 300.0
*standard_name*- geopotential_height
*units*- gpm
*standard units**- meter

Last updated: *Wed, 15 Apr 2020 19:03:55 GMT*

L | M | P2 | S | X | Y | |

IRI Analyses ICPAC Models Montreal CanCM4i HINDCAST MONTHLY hgt[ X Y | L M P2 S] | M | M | M | M | M | M |
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- Monthly Climatology calculates a monthly climatology by averaging over all years.
- anomalies calculates the difference between the (above) monthly climatology and the original data.
- Integrate along X Y L M P2 S
- Differentiate along X Y L M P2 S
- Take differences along X Y L M P2 S

RMS (root mean square with mean *not* removed) over X Y L M P2 S | X Y X L X M X P2 X S Y L Y M Y P2 Y S L M L P2 L S M P2 M S P2 S | X Y L X Y M X Y P2 X Y S X L M X L P2 X L S X M P2 X M S X P2 S Y L M Y L P2 Y L S Y M P2 Y M S Y P2 S L M P2 L M S L P2 S M P2 S | X Y L M X Y L P2 X Y L S X Y M P2 X Y M S X Y P2 S X L M P2 X L M S X L P2 S X M P2 S Y L M P2 Y L M S Y L P2 S Y M P2 S L M P2 S | X Y L M P2 X Y L M S X Y L P2 S X Y M P2 S X L M P2 S Y L M P2 S | X Y L M P2 S |

RMSA (root mean square with mean removed) over X Y L M P2 S | X Y X L X M X P2 X S Y L Y M Y P2 Y S L M L P2 L S M P2 M S P2 S | X Y L X Y M X Y P2 X Y S X L M X L P2 X L S X M P2 X M S X P2 S Y L M Y L P2 Y L S Y M P2 Y M S Y P2 S L M P2 L M S L P2 S M P2 S | X Y L M X Y L P2 X Y L S X Y M P2 X Y M S X Y P2 S X L M P2 X L M S X L P2 S X M P2 S Y L M P2 Y L M S Y L P2 S Y M P2 S L M P2 S | X Y L M P2 X Y L M S X Y L P2 S X Y M P2 S X L M P2 S Y L M P2 S | X Y L M P2 S |

Maximum over X Y L M P2 S | X Y X L X M X P2 X S Y L Y M Y P2 Y S L M L P2 L S M P2 M S P2 S | X Y L X Y M X Y P2 X Y S X L M X L P2 X L S X M P2 X M S X P2 S Y L M Y L P2 Y L S Y M P2 Y M S Y P2 S L M P2 L M S L P2 S M P2 S | X Y L M X Y L P2 X Y L S X Y M P2 X Y M S X Y P2 S X L M P2 X L M S X L P2 S X M P2 S Y L M P2 Y L M S Y L P2 S Y M P2 S L M P2 S | X Y L M P2 X Y L M S X Y L P2 S X Y M P2 S X L M P2 S Y L M P2 S | X Y L M P2 S |

Minimum over X Y L M P2 S | X Y X L X M X P2 X S Y L Y M Y P2 Y S L M L P2 L S M P2 M S P2 S | X Y L X Y M X Y P2 X Y S X L M X L P2 X L S X M P2 X M S X P2 S Y L M Y L P2 Y L S Y M P2 Y M S Y P2 S L M P2 L M S L P2 S M P2 S | X Y L M X Y L P2 X Y L S X Y M P2 X Y M S X Y P2 S X L M P2 X L M S X L P2 S X M P2 S Y L M P2 Y L M S Y L P2 S Y M P2 S L M P2 S | X Y L M P2 X Y L M S X Y L P2 S X Y M P2 S X L M P2 S Y L M P2 S | X Y L M P2 S |

Detrend (best-fit-line) over X Y L M P2 S | X Y X L X M X P2 X S Y L Y M Y P2 Y S L M L P2 L S M P2 M S P2 S | X Y L X Y M X Y P2 X Y S X L M X L P2 X L S X M P2 X M S X P2 S Y L M Y L P2 Y L S Y M P2 Y M S Y P2 S L M P2 L M S L P2 S M P2 S | X Y L M X Y L P2 X Y L S X Y M P2 X Y M S X Y P2 S X L M P2 X L M S X L P2 S X M P2 S Y L M P2 Y L M S Y L P2 S Y M P2 S L M P2 S | X Y L M P2 X Y L M S X Y L P2 S X Y M P2 S X L M P2 S Y L M P2 S | X Y L M P2 S |

Note on units