speibase - Version 2.10.0

Version 2.10.0: updated until December 2023; updated CRS definition; using SPEI package version 1.8.1.

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Published by sbegueria over 1 year ago

speibase - Version 2.9.0.

Version 2.9.0, updated until December 2022.

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Published by sbegueria over 2 years ago

speibase - Version 2.8.0

Version 2.8.0: Dataset extended until December 2020. Using SPEI package version 1.8.0.

- R
Published by sbegueria about 3 years ago

speibase - Version 2.7

Version 2.7. Minor changes, plus dataset extended until December 2020.

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Published by sbegueria almost 4 years ago

speibase - Version 2.6

Based on the CRU TS 4.03 dataset, extending the temporal range of the SPEIbase up to December 2018.

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Published by sbegueria about 4 years ago

speibase - Version 2.5.1

Just to get a DOI from zenodo.org, these are the same files on v2.5 (only minor changes to readme).

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Published by sbegueria over 8 years ago

speibase - Version 2.5

1) Based on the CRU TS 3.24.01 dataset, extending the temporal range of the SPEIbase up to December 2015.

2) An important bug has been corrected to correctly read the ETo data in mm/month and not in mm/day, as done in versions 2.2 and 2.3 of the SPEIbase.

- R
Published by sbegueria over 8 years ago

speibase - Version 2.4

1) Based on the CRU TS 3.23 dataset, extending the temporal range of the SPEIbase up to December 2014.

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Published by sbegueria over 8 years ago

speibase - Version 2.3

1) Based on the CRU TS 3.22 dataset, extending the temporal range of the SPEIbase up to December 2013.

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Published by sbegueria over 8 years ago

speibase - Version 2.2

1) The CRU TS 3.2 dataset has been used, extending the data range of the SPEIbase up to December 2011.

2) Potential evapotranspiration data from the CRU TS 3.2 dataset has been used instead of computing our own.

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Published by sbegueria over 8 years ago

speibase - Version 2.1

1) The revised dataset CRU TS 3.10.01 for precipitation is used. 2) Data on surface pressure and wind from 20th Century Reanalysis v.2 until December 2009 has been used for computing Penman PET. 3) An error while reading some data sources that yielded no data at longitudes 179.25 and 179.75 has been corrected.

- R
Published by sbegueria over 8 years ago

speibase - Version 2.0

A global gridded dataset of the SPEI drought index is computed, at time scales between 1 and 48 months, at a spatial resolution of 0.5º lat/lon and temporal coverage between January 1901 and December 2010.

The FAO-56 Penman-Monteith's method is used for computing PET, instead of Thornthwaite in SPEIbase v1.0.

Unbiased probability weighted moments (ub-pwm) method is been used for fitting the log-Logistic distribution, instead of the sub-optimal plotting-position pwm method used in version 1.0.

The whole World is now stored in a single netCDF file. There one file for each time scale of the SPEI.

- R
Published by sbegueria over 8 years ago