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Histograms of Drought Lengths

Fernwood Elementary School

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Year Histogram of Drought Length at Fernwood Elementary School
Winter Histogram of Drought Length at Fernwood Elementary School
Spring Histogram of Drought Length at Fernwood Elementary School
Summer Histogram of Drought Length at Fernwood Elementary School
Fall Histogram of Drought Length at Fernwood Elementary School

Description

These plots show histograms of consecutive days without rain at stations in the School-Based Weather Station Network. Each event is calculated by determing the number of dry days between two days that record rain. Long periods between rain events are considered droughts. The height of each bar gives the number of events with a particular length of dry spell between days with rain as percentage of the total number of events with at least one dry day between days with rain. All events are allocated to the season in which they start.

The plots are shown for the entire year and for each season. The seasons are defined as follows:

  • Winter--January, February, March
  • Spring--April, May, June
  • Summer--July, August, September
  • Fall--October, November, December

As an example, suppose that rain falls on September 29 and no rain falls again until October 4. There are four consecutive days without rain and most of them occur in Fall. Therefore a drought event would be added to the bin centred on four days in the Fall and Year plots.

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Disclaimer:

The Vancouver Island School-Based Weather Station Network is an education first project. Data from the network are made freely available as is to the public with no guarantee of accuracy or availability. Commercial use requires a license. Please contact Ed Wiebe, ecwiebe at uvic.ca for more information. This work (this site and all contents not otherwise attributed) by School-Based Weather Station Network is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
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Last Modified: March 28 2023 12:59:19.