ClimateAnomaly: Rainfall and Temperature Anomaly Indices for Climate Analysis

Computes rainfall anomaly indices and a standardised temperature anomaly from monthly or annual precipitation and temperature data supplied by the user. The rainfall indices are the Rainfall Anomaly Index (RAI; Van Rooy, 1965), the Modified Rainfall Anomaly Index (MRAI) and the Standardized Rainfall Anomaly Index (SRAI) of Ekpetere (2025) <doi:10.1016/j.jenvman.2025.124160>, the Simplified Standardized Precipitation Index (SSPI) of Raziei (2021) <doi:10.1016/j.jhydrol.2021.126761>, and the Standardized Precipitation Index (SPI; McKee et al., 1993). The temperature anomaly is a z-score computed within each calendar month. All indices are computed group-wise, so the user can stratify by any combination of spatial units (state, district, grid cell) and calendar month, and each value can be classified into a descriptive severity class.

Version:	1.0.0
Depends:	R (≥ 4.0.0)
Imports:	stats, e1071
Suggests:	knitr, rmarkdown, testthat (≥ 3.1.5)
Published:	2026-10-16
DOI:	10.32614/CRAN.package.ClimateAnomaly (may not be active yet)
Author:	Md Yeasin [aut], Ranjit Kumar Paul [aut, cre], Pushkar Bora [aut]
Maintainer:	Ranjit Kumar Paul <ranjitstat at gmail.com>
License:	GPL-3
NeedsCompilation:	no
CRAN checks:	ClimateAnomaly results

Documentation:

Reference manual:	ClimateAnomaly.html , ClimateAnomaly.pdf
Vignettes:	Introduction to ClimateAnomaly: Computing Climate Anomaly Indices (source, R code)

Downloads:

Package source:	ClimateAnomaly_1.0.0.tar.gz
Windows binaries:	r-devel: not available, r-release: not available, r-oldrel: ClimateAnomaly_1.0.0.zip
macOS binaries:	r-release (arm64): ClimateAnomaly_1.0.0.tgz, r-oldrel (arm64): ClimateAnomaly_1.0.0.tgz, r-release (x86_64): ClimateAnomaly_1.0.0.tgz, r-oldrel (x86_64): ClimateAnomaly_1.0.0.tgz

Linking:

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