PrecipTDS: Temporal downscaling of precipitation

PrecipTDS package generates a higher resolution temporal scale (15 & 30-min) from 1-h precipitation using a modified stochastic disaggregation method.

Installation:

The package can be installed from github

list.of.packages <- c("devtools")
new.packages <- list.of.packages[!(list.of.packages %in% installed.packages()[,"Package"])]
if(length(new.packages)) install.packages(new.packages)

library(devtools)
install_github("bijoychandraAU/PrecipTDS")

Example 1: Temporal Downscaling of 1-hour to 15-min.

The projected precipitation for 1 year (2030) recorded at 1-h scale is disaggregated to 15-min precipitation using the observed (1981-2000) 15-min precipitation.

1.1. Observed 15-min (O15) precipitation.

library(PrecipTDS)
data(obs_15,package = "PrecipTDS")
head(obs_15,5)

1.2. Model 1-hour (DS60) precipitation.

data(model,package = "PrecipTDS")
head(model,5)

1.3. Disaggregated 15-min (DS15) precipitation from DS60.

DS15=PrecipTDS15(obs=obs_15,mod=model)
head(DS15,5)

Example 2: Temporal Downscaling of 1-hour to 30-min.

The projected precipitation for 1 year (2030) recorded at 1-h scale is disaggregated to 30-min precipitation using the observed (1981-2000) 30-min precipitation.

2.1. Observed 30-min (O30) precipitation.

#library(PrecipTDS)
data(obs_30,package = "PrecipTDS")
head(obs_30,5)

2.2. Model 1-hour (DS60) precipitation.

data(model,package = "PrecipTDS")
head(model,5)

2.3. Disaggregated 30-min (DS30) precipitation from DS60.

DS30=PrecipTDS15(obs=obs_30,mod=model)
head(DS30,5)

References:

• Takhellambam, B. S., Srivastava, P., Lamba, J., McGehee, R. P., Kumar, H., & Tian, D. (2022). Temporal disaggregation of hourly precipitation under changing climate over the Southeast United States. Sci Data 9: 211. https://doi.org/10.1038/s41597-022-01304-7

• Choi, J., Socolofsky, S. A. & Olivera, F. (2008).Hourly disaggregation of daily rainfall in Texas using measured hourly precipitation at other locations. Journal of Hydrologic 575 Engineering 13, 476–487.https://doi.org/10.1061/(ASCE)1084-0699(2008)13:6(476)

• Socolofsky, S., Adams, E. E. & Entekhabi, D. (2001). Disaggregation of daily rainfall for continuous watershed modeling. Journal of Hydrologic Engineering 6, 300–309.https://doi.org/10.1061/(ASCE)1084-0699(2001)6:4(300)

• Mirhosseini, G., Srivastava, P. & Stefanova, L. (2013).The impact of climate change on rainfall Intensity–Duration–Frequency (IDF) curves in Alabama. Reg Environ Change 13, 25–33 519.https://doi.org/10.1007/s10113-012-0375-5.

Authors:

• Bijoychandra S. Takhellambam
• Puneet Srivastava
• Jasmeet Lamba
• Hemendra Kumar
• Roberto Molinari