climatestatsr 0.1.2

CRAN Revision (2026-05-21)

Added key method references with DOIs to the Description field in DESCRIPTION: Mann (1945), Sen (1968), Moran (1950), Coles (2001), Vicente-Serrano et al. (2010), Allen and Tett (1999).
Fixed invalid URL for Steadman (1979) DOI in man/heat_index.Rd, inst/CITATION, vignettes/climatestatsr.Rmd, and inst/doc/climatestatsr.html. The legacy AMS DOI containing angle brackets is now rendered as plain text (not a hyperlink) to avoid URL parsing failures.
Fixed 15 additional doi:[DOI](URL) Markdown patterns in the vignette that rendered as broken double-links in HTML output.
Removed R/cleanup_stray_files.R (erroneously included in R/ directory).
Removed build/ directory (artefact from local build process).
Bumped version to 0.1.2.

Author: Sadikul Islam sadikul.islam@climate-research.org

mk_test() – Mann-Kendall non-parametric trend test with optional AR(1) pre-whitening (Yue and Wang 2002 modified MK; doi:10.1029/2001WR000861).
sens_slope() – Sen’s slope estimator with confidence intervals (Sen 1968; doi:10.2307/2285891).
change_point_detection() – Pettitt test and CUSUM shift detection (Pettitt 1979; doi:10.2307/2346729).
seasonal_decompose_climate() – STL and classical seasonal decomposition.
rolling_trend() – Moving-window Sen’s slope for trend acceleration.
temporal_homogeneity() – Standard Normal Homogeneity Test / SNHT (Alexandersson 1986; doi:10.1002/joc.3370060607).
trend_significance() – Multi-station MK with FDR / Bonferroni correction (Benjamini and Hochberg 1995; doi:10.1111/j.2517-6161.1995.tb02031.x).
autocorrelation_climate() – ACF, PACF, and Ljung-Box test.

morans_i() – Global Moran’s I with permutation test (Moran 1950; doi:10.2307/2332142).
hot_cold_spots() – Getis-Ord Gi* local cluster detection (Getis and Ord 1992; doi:10.1111/j.1538-4632.1992.tb00261.x).
spatial_interpolate() – Inverse-distance weighting and loess spline (Shepard 1968; doi:10.1145/800186.810616).
spatial_trend_field() – Per-cell MK and Sen’s slope over a climate field.
cluster_climate_zones() – K-means climate zone classification.
spatial_anomaly() – Standardised anomaly field relative to baseline.
elevation_lapse_rate() – Temperature-elevation OLS regression.

fit_gev() – GEV maximum likelihood with delta-method CIs (Coles 2001; doi:10.1007/978-1-4471-3675-0).
return_period() – Return levels from GEV fit or empirical Gringorten (Gringorten 1963; doi:10.1029/JZ068i003p00813).
peaks_over_threshold() – POT declustering and GPD fitting (Davison and Smith 1990; doi:10.1111/j.2517-6161.1990.tb01796.x).
heat_wave_detection() – Threshold-based heat wave event catalogue.
cold_spell_detection() – Cold spell event catalogue.
drought_spell() – Drought detection from SPI / SPEI series.
extreme_value_index() – Hill tail-index estimator (Hill 1975; doi:10.1214/aos/1176343247).
rgev_sim() – GEV random variate generator for simulation.

spi() – Standardised Precipitation Index (McKee et al. 1993).
spei() – Standardised Precipitation-Evapotranspiration Index (Vicente-Serrano et al. 2010; doi:10.1175/2009JCLI2909.1).
pdsi_simple() – Simplified Palmer Drought Severity Index (Palmer 1965; Thornthwaite 1948, doi:10.2307/210739).
heat_index() – Apparent temperature (Rothfusz 1990; Steadman 1979, doi:10.1175/1520-0450(1979)018<0861:TAOSPI>2.0.CO;2).
wind_chill() – Wind chill temperature (JAG/TI 2001).
frost_days() – Annual or monthly frost day count.
growing_degree_days() – GDD with base and upper thresholds.
diurnal_temp_range() – Mean diurnal temperature range.

detection_attribution() – Signal-to-noise detection test (Allen and Tett 1999; doi:10.1007/s003820050291).
fingerprint_analysis() – EOF-based spatial fingerprinting (von Storch and Zwiers 1999; doi:10.1017/CBO9780511612336).
optimal_fingerprint() – GLS optimal fingerprint regression (Allen and Tett 1999; doi:10.1007/s003820050291).