Trends and Variability in Extreme Rainfall Events in British Columbia

Burn, Donald H.; Mansour, Rami; Kan Zhang; Whitfield, Paul H.
March 2011
Canadian Water Resources Journal / Revue Canadienne des Ressourc;Spring2011, Vol. 36 Issue 1, p67
Academic Journal
This paper analyzes hourly rainfall data from a collection of tipping bucket rain gauges in British Columbia. The hourly rainfall data are used to define peaks over threshold (POT) rainfall events for durations of 1, 2, 6, 12 and 24 hours. This database is then used to define, on an annual basis, the number of over threshold events, the average magnitude of the over threshold events, and the largest over threshold event. Trend analysis is conducted for these three variables for each duration and for several common analysis periods drawn from the period 1966 to 2005. The identification and estimation of trends is conducted using the Mann-Kendall nonparametric test for trend. The global, or field, significance of the trend results is established using a bootstrap resampling approach. The research reveals generally increasing trends in extreme rainfall, especially for the summer season and for the short duration rainfall events.


Related Articles

  • Influence of rainfall observation network on model calibration and application. Bárdossy, A.; Das, T. // Hydrology & Earth System Sciences;2008, Vol. 12 Issue 1, p77 

    The objective in this study is to investigate the influence of the spatial resolution of the rainfall input on the model calibration and application. The analysis is carried out by varying the distribution of the raingauge network. A meso-scale catchment located in southwest Germany has been...

  • Rainfall Amount, Intensity, Duration, and Frequency Relationships in the Mae Chaem Watershed in Southeast Asia. Dairaku, Koji; Emori, Seita; Oki, Taikan // Journal of Hydrometeorology;Jun2004, Vol. 5 Issue 3, p458 

    A dense tipping-bucket rain gauge network was established in the Mae Chaem watershed in the mountains of northwestern Thailand as part of the Global Energy and Water Cycle Experiment (GEWEX) Asian Monsoon Experiment-Tropics (GAME-T). Investigations of rainfall amounts, intensities, durations,...

  • An Evaluation of Radar Rainfall Estimates from Specific Differential Phase. Brandes, Edward A.; Ryzhkov, Alexander V.; Zrnic, Dusan S. // Journal of Atmospheric & Oceanic Technology;Mar2001, Vol. 18 Issue 3, p363 

    Presents a study which examined specific differential propagation phase for estimating convective rainfall in Colorado and Kansas. Specific differential phase calculation; Comparison with rain gauges and radar effectivity; Conclusions.

  • Circulation Mechanisms of Kenya Rainfall Anomalies. Hastenrath, Stefan; Polzin, Dierk; Mutai, Charles // Journal of Climate;Jan2011, Vol. 24 Issue 2, p404 

    Expanding earlier studies on the boreal spring and autumn rainy seasons in equatorial East Africa, pending challenges on the mechanisms of rainfall variability, are investigated. Eastward pressure gradient and slack south Indian Ocean trade winds allow surface equatorial westerlies in spring and...

  • Analysis of precipitation characteristics of Poyang Lake Basin. CAO Yanhua; YE Xiaofeng; LV Guanghong // Applied Mechanics & Materials;2014, Issue 630-642, p29 

    This paper was based on the Poyang lake Basin's 55a rainfall data (1959 ∼2014). First, the recursive linear interpolation method was used to complete the daily precipitation observation data of 55a to establish the Poyang lake basin's data. Then the linear regression method was used to...

  • Subpixel-Scale Rainfall Variability and the Effects on Separation of Radar and Gauge Rainfall Errors. Zhang, Yu; Adams, Thomas; Bonta, James V. // Journal of Hydrometeorology;Dec2007, Vol. 8 Issue 6, p1348 

    This paper presents an extended error variance separation method (EEVS) that allows explicit partitioning of the variance of the errors in gauge- and radar-based representations of areal rainfall. The implementation of EEVS demonstrated in this study combines a kriging scheme for estimating...

  • A Twentieth-Century Rainfall History of India.  // CO2 Science;4/20/2011, Vol. 14 Issue 16, p5 

    The article discusses a research study on rainfall trend in India in 1901-2000. It references a study by M. K. Joshi and A. C. Pandey published in the 116th volume of the "Journal of Geophysical Research." The researchers used the precipitation data they got from the Meteorological Department's...

  • Time distribution of heavy rainfall events in Urussanga, Santa Catarina State, Brazil. Back, Álvaro José // Acta Scientiarum: Agronomy;Oct-Dec2011, Vol. 33 Issue 4, p583 

    A knowledge of rainfall time distribution is important for several types of hydrological studies related to surface runoff. This study aims to determine the time distribution pattern of heavy rain events in Urussanga, Santa Catarina State, Brazil. It employed recording rainfall charts from the...

  • The Effect of Mesoscale Mountain over the East Indochina Peninsula on Downstream Summer Rainfall over East Asia. Qi, Li; Wang, Yuqing // Journal of Climate;Jul2012, Vol. 25 Issue 13, p4495 

    The mesoscale mountain over the east Indochina Peninsula, named Annam Cordillera, plays a key role in shaping the South China Sea (SCS) summer climate in both the atmosphere and the ocean. However, its effect is not limited to the SCS. Ensemble simulations using a high-resolution regional...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics