Interface for the Global Runoff Data Centre database of Monthly Time Series

Description

This function interfaces the Global Runoff Data Centre monthly mean daily discharges database.

Usage

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tsGRDC(stationID, plotOption = FALSE)

Arguments

stationID

7 character number that identifies a station, GRDC station number is called "grdc no" in the catalogue.

plotOption

boolean to define whether to plot the results. By default this is set to TRUE.

Details

Please note that not all the GRDC stations listed in the catalogue have monthly data available.

Value

The function returns a list of 3 tables:

mddPerYear

This is a table containing mean daily discharges for each single year (n records, one per year). It is made of 7 columns which description is as follows:

  • LQ: lowest monthly discharge of the given year

  • month: associated month of occurrence

  • MQ: mean discharge of all monthly discharges in the given year

  • HQ: highest monthly discharge of the given year

  • month: associated month of occurrence

  • n: number of available values used for MQ calculationFirst item

mddAllPeriod

This is a table containing mean daily discharges for the entire period (Calculated only from years with less than 2 months missing). It is made of 6 columns which description is as follows:

  • LQ: lowest monthly discharge from the entire period

  • MQ_1: mean discharge of all monthly discharges in the period [m3/s]

  • MQ_2: mean discharge volume per year of all monthly discharges in the period [km3/a]

  • MQ_3: mean runoff per year of all monthly discharges in the period [mm/a]

  • HQ: highest monthly discharge from the entire periode

  • n: number of available months used for MQ calculation

mddPerMonth

This is a table containing mean daily discharges for each month over the entire period (12 records covering max. n years. Calculated only for months with less then or equal to 10 missing days). It is made of 7 columns which description is as follows:

  • LQ: lowest monthly discharge of the given month in the entire period

  • year: associated year of occurrence (only the first occurence is listed)

  • MQ: mean discharge from all monthly discharges of the given month in the entire period

  • HQ: highest monthly discharge of the given month in the entire period

  • year: associated year of occurrence (only the first occurence is listed)

  • std: standard deviation of all monthly discharges of the given month in the entire period

  • n: number of available daily values used for computation

Author(s)

Claudia Vitolo

Examples

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## Not run: 
  x <- tsGRDC(stationID=1107700)

## End(Not run)