CHIRPS3 FAQ - Revision history

Daniella at 19:46, 20 September 2026

2026-09-20T19:46:45Z

Daniella: /* How do I reference CHIRPS in publications? */

2026-09-20T19:40:28Z

How do I reference CHIRPS in publications?

Daniella: /* How do I reference CHIRPS in publications? */

2026-09-20T19:39:26Z

How do I reference CHIRPS in publications?

Daniella: /* Is there a copy of the paper online? */

2026-09-20T19:38:10Z

Is there a copy of the paper online?

Daniella: /* Who do I contact with CHIRPS questions? */

2026-09-20T19:35:37Z

Who do I contact with CHIRPS questions?

Daniella: /* Who do I contact with CHIRPS questions? */

2026-09-20T19:35:07Z

Who do I contact with CHIRPS questions?

Daniella: /* Who do I contact with CHIRPS questions? */

2026-09-20T19:34:24Z

Who do I contact with CHIRPS questions?

Daniella: /* Who do I contact with CHIRPS questions? */

2026-09-20T19:32:39Z

Who do I contact with CHIRPS questions?

Daniella at 19:30, 20 September 2026

2026-09-20T19:30:45Z

Daniella at 19:25, 20 September 2026

2026-09-20T19:25:08Z

@@ Line 19: / Line 19: @@
 *Latin America 35N-60N, 120W-34W   @0.05 deg resolution = maps 1720 x 1900 pixels
-==What are the file formats available for CHIRPS?==
+==What are the file formats available for CHIRPS3?==
 *.tif
 *.bil
@@ Line 25: / Line 25: @@
 *.cog
-==What are the time steps available for CHIRPS?==
+==What are the time steps available for CHIRPS3?==
-*[[#How does CHIRPS define a pentad?| pentad]]
+*[[#How does CHIRPS3 define a pentad?| pentad]]
-*[[#How does CHIRPS define a dekad?| dekad]]
+*[[#How does CHIRPS3 define a dekad?| dekad]]
 *[[#How are CHIRPS3 daily data produced?| daily]]
 *monthly
@@ Line 34: / Line 34: @@
 *annual
-===How does CHIRPS define a pentad?===
+===How does CHIRPS3 define a pentad?===
 *6 pentads = 1 calendar month. Each of first 5 pentads in a month have 5 days. The last pentad contains all the days from the 26th to the end of the month.
-===How does CHIRPS define a dekad?===
+===How does CHIRPS3 define a dekad?===
 *A dekad = sum of 2 pentads. There are 3 dekads in a calendar month.
@@ Line 61: / Line 61: @@
 ==What is the spatial density of station data used in CHIRPS?==
-The number and spatial distribution of rain gauges incorporated into CHIRPS vary by location and over time. Some regions have relatively dense station coverage, while others are more station-sparse, and the number of available stations can change substantially from month to month and year to year.
+The number and spatial distribution of rain gauges incorporated into CHIRPS3 vary by location and over time. Some regions have relatively dense station coverage, while others are more station-sparse, and the number of available stations can change substantially from month to month and year to year.
-*CHC provides several diagnostic products that allow users to examine station coverage. Monthly Station Density maps show the number of stations within each grid cell at both 0.05° and 0.25° resolutions, helping users identify station-dense and station-sparse regions. Station Density maps are also produced for CHIRPS preliminary and final pentads. Additional information on the station inputs used in CHIRPS is available through the CHIRPS Diagnostics products.
+*CHC provides several diagnostic products that allow users to examine station coverage. Monthly Station Density maps show the number of stations within each grid cell at both 0.05° and 0.25° resolutions, helping users identify station-dense and station-sparse regions. Station Density maps are also produced for CHIRPS preliminary and final pentads. Additional information on the station inputs used in CHIRPS3 is available through the CHIRPS3 Diagnostics products.
-*Station observations can also be explored through the Early Warning eXplorer (EWX) using the RCHECKS layer. These “reality checks” display station observations over the CHIRPS rainfall field, allowing users to examine how station availability and agreement with the CHIRP satellite rainfall estimates vary across space and time.
+*Station observations can also be explored through the Early Warning eXplorer (EWX) using the RCHECKS layer. These “reality checks” display station observations over the CHIRPS3 rainfall field, allowing users to examine how station availability and agreement with the CHIRP3 satellite rainfall estimates vary across space and time.
 You can access EWX [https://ewx3.chc.ucsb.edu/ewx/index.html here].
@@ Line 70: / Line 70: @@
 *Then double click on RCHECKS
 *You will have to zoom in to see squares with black dots in the middle.
-**These are 10x10 pixel boxes of the station value on top of the CHIRPS field, a "reality check" to see if the stations match the background field.
+**These are 10x10 pixel boxes of the station value on top of the CHIRPS3 field, a "reality check" to see if the stations match the background field.
 **You can zoom in on a location, then cycle through month/years to see how the number of stations changes with time. It is pretty significant in some areas.
@@ Line 83: / Line 83: @@
 For its intended uses, Seasonal Drought monitoring and Trend Analysis, it is very good; see [ftp://chg-data-out.chc.ucsb.edu/pub/org/chg/people/AGU-Fall.2014.presentations/AGU.2014.pete_peterson.final.pptx]
-==How do I reference CHIRPS in publications?==
+==How do I reference CHIRPS3 in publications?==
 Funk, C., Peterson, P., Harrison, L. et al. The Climate Hazards Center Infrared Precipitation with Stations, Version 3. Sci Data 13, 718 (2026). https://doi.org/10.1038/s41597-026-07096-4

← Older revision		Revision as of 19:40, 20 September 2026
Line 84:		Line 84:

	==How do I reference CHIRPS in publications?==		==How do I reference CHIRPS in publications?==
−	~~Climate Hazards Center Infrared Precipitation with Stations version 3 (CHIRPS3) Data Repository: https://doi.org/10.15780/G2JQ0P (2025). Data was accessed on [DATE].~~
−
	Funk, C., Peterson, P., Harrison, L. et al. The Climate Hazards Center Infrared Precipitation with Stations, Version 3. Sci Data 13, 718 (2026). https://doi.org/10.1038/s41597-026-07096-4		Funk, C., Peterson, P., Harrison, L. et al. The Climate Hazards Center Infrared Precipitation with Stations, Version 3. Sci Data 13, 718 (2026). https://doi.org/10.1038/s41597-026-07096-4

@@ Line 84: / Line 84: @@
 ==How do I reference CHIRPS in publications?==
-Funk, C.C., Peterson, P.J., Landsfeld, M.F., Pedreros, D.H., Verdin, J.P.,
+Climate Hazards Center Infrared Precipitation with Stations version 3 (CHIRPS3) Data Repository: https://doi.org/10.15780/G2JQ0P (2025). Data was accessed on [DATE].
-Rowland, J.D., Romero, B.E., Husak, G.J., Michaelsen, J.C., and Verdin, A.P.,
-, A quasi-global precipitation time series for drought monitoring: U.S.
+Funk, C., Peterson, P., Harrison, L. et al. The Climate Hazards Center Infrared Precipitation with Stations, Version 3. Sci Data 13, 718 (2026). https://doi.org/10.1038/s41597-026-07096-4
 ==What are some of the changes in version 3.0?==

@@ Line 98: / Line 98: @@
 ==Is there a copy of the paper online?==
 Yes.
-*[http://tinyurl.com/chg-chirps/docs/USGS-DS832.CHIRPS.pdf CHG-local source ]
+*[https://chc.ucsb.edu/research CHC Publications ]
-*[http://pubs.usgs.gov/ds/832/ USGS website ]
+*[https://www.usgs.gov/publications/climate-hazards-center-infrared-precipitation-stations-version-3 USGS website ]
 ==Who do I contact with CHIRPS questions?==

@@ Line 102: / Line 102: @@
 ==Who do I contact with CHIRPS questions?==
-[[User:Help| Help]] [chc-help@geog.ucsb.edu chc-help@geog.ucsb.edu]
+[[User:Help| Help]] [mailto:chc-help@geog.ucsb.edu chc-help@geog.ucsb.edu]
 [[User:Pete| Pete Peterson]] [mailto:pete@geog.ucsb.edu pete@geog.ucsb.edu]
 [[User:Robert| Robert Saldivar]] [mailto:rsaldivar.ucsb.edu rsaldivar.ucsb.edu]

@@ Line 3: / Line 3: @@
 ==Where can I get CHIRPS3 data?==
-===Via a web browser===
+Via a web browser https://data.chc.ucsb.edu/products/CHIRPS/v3.0/. The Climate Hazards Center landing page for all our public data is https://data.chc.ucsb.edu
 ==Do rainfall amounts differ in CHIRPS3 and CHIRPS2?==