U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Northern Great Plains Research Laboratory: Mandan, ND
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    Careers


        


                    Employment
                        Work With Us
                                    ARS Vacancies at USDAJOBS
                    Local News
                        INTEGRATOR
                                    Bottom Line Ag SummitSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area Mandan, North Dakota Northern Great Plains Research Laboratory Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications
- IACUC Executive Minutes

Title:   Author  item
                                            Hendrickson, Johnitem
                                            Liebig, Markitem
                                            ENTZ, J - NDSU, FARGO, NDitem
                                            RIES, R - USDA-ARS (RETIRED)
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 7/25/2002
                                    Publication  Date: 11/10/2002
                                    Citation: HENDRICKSON, J.R., LIEBIG, M.A., ENTZ, J.W., RIES, R.E. ARE THE NUMBER OF EXTREME PRECIPITATION EVENTS INCREASING AT THE NORTHERN GREAT PLAINS RESEARCH LABORATORY? In Annual Meeting Abstracts CD-ROM, November 10-14, 2002, Indianapolis, IN, ASA-CSSA-SSSA, Madison, WI. 2002. Paper No. A03-liebig110700.Interpretive Summary:
                                Technical Abstract: Climate change models have projected increases in the number of extreme precipitation events.  The objective of this study was to evaluate whether the number of extreme precipitation events has increased over time at the Northern Great Plains Research Laboratory, USDA-ARS at Mandan, North Dakota, USA.  Long-term monthly precipitation averages were computed using weather records dating back to 1914.  Extreme precipitation events were considered as 24-hour precipitation events equal or greater than 50, 100 or 150% of the long-term monthly average.  Numbers of events were grouped by 10-year time intervals starting in 1921 and continuing to 2000.  Data were analyzed using the Cox-Stuart test for trend.  The total number of extreme precipitation events for the 50 and 100% of the monthly mean was highest from 1991-2000 (66 and 14 for 50 and 100%, respectively) followed by 1941-1950 (66 and 11 for 50 and 100%, respectively).  There were seven events equal to or greater than 150% of the monthly mean from 1991-2000 while the remaining time periods contained three or fewer events of the same magnitude.  Although the total number of extreme precipitation events was greatest in the 1990s, the Cox-Stuart test did not reveal a significant upward trend in number of extreme events over time.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov