Changes in version 0.1.2 (2026-06-18)                  

CRAN Revision (2026-05-21)

Changes in response to CRAN review

  - 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.

                        Changes in version 0.1.0                        

Initial CRAN Submission (2026-05-20)

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

New Functions

Temporal Analysis

  - 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.

Spatial Analysis

  - 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.

Extreme Events

  - 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.

Climate Indices

  - 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 and Attribution

  - 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).

Utilities

  - fill_gaps_climate() -- Linear, climatological or reference
    gap-filling.
  - homogenize_series() -- SNHT break-point correction.
  - aggregate_climate() -- Daily to monthly / seasonal / annual
    aggregation.
  - anomaly_baseline() -- Anomaly relative to reference period.
  - standardize_climate() -- Z-score standardisation (optionally by
    month).
  - climate_summary() -- One-call descriptive and trend summary.

S3 Methods

  - print.climate_test(), summary.climate_test(), plot.climate_test()
  - print.gev_fit()