IRI Analyses SPI SPI-CAMSOPI_3-Month: SPI-CAMS_OPI_3-month data

SPI-CAMS_OPI_3-month from IRI Analyses SPI: Standardized Precipitation Index analyses of multiple global precipitation datasets.

Independent Variables (Grids)

Time (time)
grid: /T (months since 1960-01-01) ordered (Jan-Mar 1979) to (Feb-Apr 2024) by 1.0 N= 542 pts :grid
Longitude (longitude)
grid: /X (degree_east) periodic (1.25E) to (1.25W) by 2.5 N= 144 pts :grid
Latitude (latitude)
grid: /Y (degree_north) ordered (88.75S) to (88.75N) by 2.5 N= 72 pts :grid

Other Info

bufferwordsize
8
CE
3.0999999
CS
-3.0999999
datatype
doublearraytype
file_missing_value
-9.9899998
gridid
171652808
maxncolor
254
missing_value
NaN
pointwidth
3
scale_max
3.0999999
scale_min
-3.0999999
standard_name
time
units
unitless
colorscale

References

Guttman, N. B., 1999: Accepting the Standandardized Precipitation Index: a calculation algorithm. J. Amer. Water Resour. Assoc., 35(2), 311-322

McKee, T.B., N. J. Doesken, and J. Kliest, 1993: The relationship of drought frequency and duration to time scales. In Proceedings of the 8th Conference of Applied Climatology, 17-22 January, Anaheim, CA. American Meterological Society, Boston, MA. 179-184.

McKee, T.B., N.J. Doesken, and J. Kliest, 1995: Drought monitoring with multiple time scales. In Proceedings of the 9th Conference of Applied Climatology, 15-20 January, Dallas TX. American Meteorological Society, Boston, MA. 233-236

Last updated: Wed, 15 May 2024 11:45:23 GMT
Expires: Sat, 01 Jun 2024 00:00:00 GMT

Data Views

TXY
[ T | X Y]MMM


Filters

Here are some filters that are useful for manipulating data. There are actually many more available, but they have to be entered manually. See Ingrid Function Documentation for more information. Average over T X Y | T X T Y X Y | T X Y |
RMS (root mean square with mean *not* removed) over T X Y | T X T Y X Y | T X Y |
RMSA (root mean square with mean removed) over T X Y | T X T Y X Y | T X Y |
Maximum over T X Y | T X T Y X Y | T X Y |
Minimum over T X Y | T X T Y X Y | T X Y |
Detrend (best-fit-line) over T X Y | T X T Y X Y | T X Y |
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Note on units