IRI Analyses SPI SPI-GOBv0px1deg_6-Month: 6-Month Standardized Precipitation Index data

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

Independent Variables (Grids)

Time
grid: /T (months since 1960-01-01) ordered (Jan 1979) to (Jan 2025) by 1.0 N= 553 pts :grid
Longitude
grid: /X (degree_east) periodic (0) to (1W) by 1.0 N= 360 pts :grid
Latitude
grid: /Y (degree_north) ordered (89S) to (89N) by 1.0 N= 179 pts :grid

Other Info

bufferwordsize
8
CE
3.5
colorscalename
drought_monitor_colors1
CS
-3.5
datatype
doublearraytype
file_missing_value
-9.9899998
maxncolor
254
missing_value
NaN
pointwidth
1.0
scale_max
3.5
scale_min
-3.5
units
unitless
history
NOAA NCEP CPC GOB V0px daily RETRO prcp
Boxes with less than 0.0% dropped
T: Nov 2014 to Jan 2025 appended from NOAA NCEP CPC GOB V0px daily REALTIME prcp

IRI Analyses SPI SPI-GOBv0px1deg_6-Month
Boxes with less than 25.0% dropped
Boxes with less than 25.0% dropped
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: Tue, 04 Feb 2025 19:28:51 GMT

Data Views

TXY
[ T | X Y]MMM