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Easily Download and Visualise Climate Data from CliFlo
CliFlo is a web portal to the New Zealand National Climate Database and provides public access (via subscription) to around 6,500 various climate stations (see < https://cliflo.niwa.co.nz/> for more information). Collating and manipulating data from CliFlo (hence clifro) and importing into R for further analysis, exploration and visualisation is now straightforward and coherent. The user is required to have an internet connection, and a current CliFlo subscription (free) if data from stations, other than the public Reefton electronic weather station, is sought.
Modelling and Validation of Non Homogeneous Poisson Processes
Tools for modelling, ML estimation, validation analysis and simulation of non homogeneous Poisson processes in time.
Maximum Homogeneity Clustering for Univariate Data
Maximum homogeneity clustering algorithm for one-dimensional data
described in W. D. Fisher (1958)
Standardized Climate Indices Such as SPI, SRI or SPEI
Functions for generating Standardized Climate Indices (SCI). Functions for generating Standardized Climate Indices (SCI). SCI is a transformation of (smoothed) climate (or environmental) time series that removes seasonality and forces the data to take values of the standard normal distribution. SCI was originally developed for precipitation. In this case it is known as the Standardized Precipitation Index (SPI).
Spatial Functions for Heterogeneity and Climate Variability
A comprehensive suite of spatial functions created to analyze and assess data heterogeneity and climate variability in spatial datasets. This package is specifically designed to address the challenges associated with characterizing and understanding complex spatial patterns in environmental and climate-related data.
Climatic Indices for Agriculture
Collection of functions to compute agroclimatic indices useful to zoning areas based on climatic variables and to evaluate the importance of temperature and precipitation for individual crops, or in general for agricultural lands.
Homogeneity and Sparsity Detection Incorporating Prior Constraint Information
We explore sparsity and homogeneity of regression coefficients incorporating prior constraint information. A general pairwise fusion approach is proposed to deal with the sparsity and homogeneity detection when combining prior convex constraints. We develop an modified alternating direction method of multipliers algorithm (ADMM) to obtain the estimators.
Manipulate Time Series of Climate Reconstructions
Methods to easily extract and manipulate climate
reconstructions for ecological and anthropological analyses, as described
in Leonardi et al. (2023)
Iberian Actuarial Climate Index Calculations
Calculates the Iberian Actuarial Climate Index and its components—including temperature, precipitation, wind power, and sea level data—to support climate change analysis and risk assessment. See "Zhou et al." (2023)
Simulation of Sediment Archived Climate Proxy Records
Proxy forward modelling for sediment archived climate proxies such
as Mg/Ca, d18O or Alkenones. The user provides a hypothesised "true" past climate,
such as output from a climate model, and details of the sedimentation rate and
sampling scheme of a sediment core. Sedproxy returns simulated proxy records.
Implements the methods described in Dolman and Laepple (2018)