Stochastic Weather Generator (WeaGETS)
WeaGETS is a Matlab-based versatile stochastic daily weather generator (WeaGETS) for producing daily precipitation, maximum and minimum temperatures (Tmax and Tmin) series of unlimited length, thus permitting impact studies of rare occurrences of meteorological variables. Furthermore, it can be used in climate change studies as a downscaling tool by perturbing their parameters to account for expected changes in precipitation and temperature. First, second and third-order Markov models are provided to generate precipitation occurrence, and four (exponential, gamma, skewed normal and mixed exponential) distributions are available to produce daily precipitation quantity. Precipitation generating parameters have options to be smoothed using Fourier harmonics. Two schemes (unconditional and conditional) are available to simulate Tmax and Tmin. Finally, a spectral correction approach is included to correct the well-known underestimation of monthly and inter-annual variability associated with weather generators.
Citation pour cette source
JIE CHEN (2024). Stochastic Weather Generator (WeaGETS) (https://www.mathworks.com/matlabcentral/fileexchange/29136-stochastic-weather-generator-weagets), MATLAB Central File Exchange. Extrait(e) le .
Compatibilité avec les versions de MATLAB
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- Sciences > Geoscience > Weather and Atmospheric Science >
- Sciences > Geoscience > Climate Science and Analysis >
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WeaGETS/
Version | Publié le | Notes de version | |
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1.6.0.0 | figured out a bug of using the first-order linear autoregressive model for generating maximum and minimum temperatures |
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1.5.0.0 | Two additional distributions (skewed normal and mixed exponential) are provided to simulate wet-day precipitation, when "smoothing scheme" is not selected. |
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1.4.0.0 | Implement a fix in WeaGETS to force the correlation matrix of temperature to be positive definite. If the eigenvalues are not positive, simple set it close to zero. |
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1.2.0.0 | The discription of the main program and the User Manual is revised. |
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1.0.0.0 |