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Caliza™ 2.0

Caliza™ is one of the core computational tools used by CRA to perform nonstationary risk analysis. It is the flagship of CRA software products.

The role of Caliza™ and its predecessor, XTREND, in the study of climate risk, has been frequently noted in professional journals which have a high impact on the climate change industry. See right for examples.

CRA can easily custom-tailor Caliza™ to reflect your specific requirements for sensitivity analysis. Consider, for example, how sensitive flood risk estimates are to the existence or nonexistence of reservoirs on a river.

Contact CRA for your personal Caliza™ proposal, pricing, or any other information. Here is the contact form.

Demo version

  • Use with manual
  • Tested on Windows™ XP Professional (32 bit, 64 bit) and Windows™ 7
  • Contact CRA for other versions
  • Zipped demo archive

User manual

Scientific details

  • Robust detection of extremes using nonparametric regression
  • Kernel estimation of time-dependent risk
  • Cross-validation of kernel bandwidth parameter
  • Bootstrap simulation for confidence band construction
  • Statistical test of stationarity hypothesis

Technical details

  • All Windows™ platforms (32 bit, 64 bit)
  • Fortran 90 code (double precision equivalent)
  • Data size: virtually unlimited
  • Interactive working environment (graphics, calculations)
Selected Caliza™ papers

D'Arrigo et al. (2011) Reconstructed streamflow for Citarum river, Java, Indonesia: Linkages to tropical climate dynamics. Climate Dynamics 36:451-462.

Girardin et al. (2009) Heterogeneous response of circumboreal wildfire risk to climate change since the early 1900s. Global Change Biology 15:2751.

Abram et al. (2008) Recent intensification of tropical climate variability in the Indian Ocean. Nature Geoscience 1:849.

Besonen et al. (2008) A 1,000-year, annually-resolved record of hurricane activity from Boston, Massachusetts. Geophysical Research Letters 35:L14705.

Girardin and Mudelsee (2008) Past and future changes in Canadian boreal wildfire activity. Ecological Applications 18:391.

Fleitmann et al. (2007) East African soil erosion recorded in a 300 year old coral colony from Kenya. Geophysical Research Letters 34:L04401.

Mudelsee et al. (2006) Trends in flood risk of the River Werra (Germany) over the past 500 years. Hydrological Sciences Journal 51:818.

Girardin et al. (2006) A 229-year dendroclimatic-inferred record of forest fire activity for the Boreal Shield of Canada. International Journal of Wildland Fire 15:375.

Mudelsee et al. (2004) Extreme floods in central Europe over the past 500 years: Role of cyclone pathway "Zugstrasse Vb". Journal of Geophysical Research 109:D23101.

Mudelsee et al. (2003) No upward trends in the occurrence of extreme floods in central Europe. Nature 425:166.
© Climate Risk Analysis 2011