The Uppsala Conflict Data Program (UCDP) has recorded ongoing violent conflicts since the 1970s. The data provided is one of the most accurate and well-used data-sources on global armed conflicts and its definition of armed conflict is becoming a standard in how conflicts are systematically defined and studied.
About UCDP
UCDP Dyadic Dataset v. 1-2011, 1946 - 2010
Content: A dyad-year version of the UCDP/PRIO Armed Conflict Dataset. A dyad consists of two opposing actors in an armed conflict where at least one party is the government of a state. The timeperiod covered is 1946-2010.
Latest presentation of data: Themnér, Lotta & Peter Wallensteen, 2011. "Armed Conflict, 1946-2010." Journal of Peace Research 48(4).
Original citation for the data: Harbom, Lotta, Erik Melander & Peter Wallensteen, 2008. "Dyadic Dimensions of Armed Conflict, 1946-2007." Journal of Peace Research 45(5): 697-710.
Latest update: 29 July 2010
Older versions
UCDP Dyadic Dataset v. 1-2010, 1946 - 2009
UCDP Dyadic Dataset v. 1-2009, 1946 - 2008
UCDP Dyadic Dataset v. 1.0, 1946 - 2007
Replication Data
Harbom, Lotta & Peter Wallensteen (2010) Armed Conflicts, 1946-2009. Journal of Peace Research 47(4): 501-509
UCDP Dyadic Dataset v. 1-2010, 1946-2009
Codebook UCDP Dyadic Dataset v. 1-2010
Harbom, Lotta & Peter Wallensteen (2009) Armed Conflicts, 1946-2008. Journal of Peace Research 46(4):577-587
UCDP Dyadic Dataset v. 1-2009, 1946-2008
Codebook UCDP Dyadic Dataset v. 1-2009
Harbom, Lotta, Erik Melander & Peter Wallensteen (2008) Dyadic Dimensions of Armed Conflict, 1946-2007. Journal of Peace Research 45(5): 697-710.
UCDP Dyadic Dataset v. 1.0, 1946-2007
Codebook UCDP Dyadic Dataset v. 1.0
Click image for the UCDP Conflict Encyclopedia (UCDP database)
Click image for the UCDP Georeferenced Event Data
Latest News
New UCDP GED YouTube-video!
A short video of organized violence in 1989-2010, over time and space. A derivative of the UCDP Georeferenced Event Dataset (out now!)
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Major UCDP data release
On 8 December, 2011, the UCDP released its latest addition to its vast number of datasets; the UCDP GED version 1.0-2011. The UCDP GED is an event-based and georeferenced dataset on organized violence, detailing all of the UCDP’s categories of violence (state-based conflict, non-state conflict and one-sided violence) in Africa between 1989 and 2010 at the level of the individual event of violence.
Also on 8 December, 2011, the UCDP released new data on external support in internal armed conflicts for the time period 1975-2009.
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The Arab Spring in the UCDP Conflict Encyclopedia
The events of the Arab Spring will shortly be added in the UCDP Conflict Encyclopedia. Click on the links below for a background note on the Arab Spring and a timeline including events until late December 2011.
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