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| Título: | SPEIbase v.2 [Dataset] |
Autor: | Beguería, Santiago CSIC ORCID ; Vicente Serrano, Sergio M. CSIC ORCID | Palabras clave: | SPEI Drought Drought Index Standardized Precipitation-Evapotranspiration Index Precipitation Evapotranspiration Global Warming Climate change Climatology Climate data Global data |
Fecha de publicación: | 12-abr-2012 | Citación: | Beguería, Santiago ; Vicente Serrano, Sergio M.; 2012; SPEIbase v.2 [Dataset]; DIGITAL.CSIC.; http://dx.doi.org/10.20350/digitalCSIC/2883 | Resumen: | Global gridded dataset of the Standardised Precipitation-Evapotranspiration Index (SPEI) at time scales between 1 and 48 months. Spatial resolution of 0.5º lat/lon. Temporal coverage between January 1901 and December 2009. This is an update of a previous version of SPEIbase (http://hdl.handle.net/10261/22449). What’s new in version 2.0: 1) Data has been extended to the period 1901-2009 (it was 1901-2006 in v 1.0). 2) The FAO-56 Penman-Monteith's method has been used for computing PET instead of Thornthwaite. 3) Unbiased probability weighted moments (ub-pwm) method has been used for fitting the log-Logistic distribution, instead of the sub-optimal plotting-position pwm method used in version 1.0. 4) The whole world is put in one single netCDF file. For more details on the SPEI visit http://www.eead.csic.es/spei. | Descripción: | The Global 0.5° gridded SPEI dataset is made available under the Open Database License. Any rights in individual contents of the database are licensed under the Database Contents License. Users of the dataset are free to share, create and adapt under the conditions of attribution and share-alike. Use of the newest version is recommended. Older versions are still available to allow replicability. The Global SPEI database, SPEIbase, offers long-time, robust information on the drought conditions at the global scale, with a 0.5 degrees spatial resolution and a monthly time resolution. It has a multi-scale character, providing SPEI time-scales between 1 and 48 months. The Standardized Precipitatin-Evapotranspiration Index (SPEI) expresses, as a standardized variate (mean zero and unit variance), the deviations of the current climatic balance (precipitation minus evapotranspiration potential) with respect to the long-term balance. The reference period for the calculation, in the SPEIbase, corresponds to the whole study period. Being a standardized variate means that the SPEI condition can be compared across space and time. Calculation of the evapotranspiration potential in SPEIbase is based on the FAO-56 Penman-Monteith method. Data type: float; units: z-values (standard deviations). No land pixels are assigned a value of 1.0x10^30. In some rare cases it was not possible to achieve a good fit to the log-logistic distribution, resulting in a NAN (not a number) value in the database. Dimensions of the dataset: lon = 720; lat = 360; time = 1356. Resolution of the dataset: lon = 0.5º; lat = 0.5º; time = 1 month. Created in R using the SPEI package (http://cran.r-project.org/web/packages/SPEI). |
Versión del editor: | http://sac.csic.es/spei/ | URI: | http://hdl.handle.net/10261/48169 | DOI: | 10.20350/digitalCSIC/2883 | Referencias: | Vicente-Serrano S.M., Beguería S., López-Moreno J.I., 2010: A Multi-scalar drought index sensitive to global warming: The Standardized Precipitation Evapotranspiration Index. http://dx.doi.org/10.1175/2009JCLI2909.1.-- http://digital.csic.es/handle/10261/22405. Vicente-Serrano S.M., Beguería S., López-Moreno J.I., Angulo M., El Kenawy A. (2010) A global 0.5° gridded dataset (1901-2006) of a multiscalar drought index considering the joint effects of precipitation and temperature. http://dx.doi.org/10.1175/2010JHM1224.1. http://digital.csic.es/handle/10261/23906. Beguería S., Vicente-Serrano S.M., Angulo M. A multi-scalar global drought data set: the SPEIbase. http://dx.doi.org/10.1175/2010BAMS2988.1. http://digital.csic.es/handle/10261/29993. |
| Aparece en las colecciones: | (EEAD) Conjuntos de datos (IPE) Conjuntos de datos (EEAD) SPEIbase |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| SPEI_01.nc.gz | Global 01-month 1901-2009 SPEI | 320,07 MB | NetCDF file | Visualizar/Abrir |
| SPEI_02.nc.gz | Global 02-month 1901-2009 SPEI | 319,7 MB | NetCDF file | Visualizar/Abrir |
| SPEI_03.nc.gz | Global 03-month 1901-2009 SPEI | 319,39 MB | NetCDF file | Visualizar/Abrir |
| SPEI_04.nc.gz | Global 04-month 1901-2009 SPEI | 319,12 MB | NetCDF file | Visualizar/Abrir |
| SPEI_05.nc.gz | Global 05-month 1901-2009 SPEI | 318,88 MB | NetCDF file | Visualizar/Abrir |
| SPEI_06.nc.gz | Global 06-month 1901-2009 SPEI | 318,66 MB | NetCDF file | Visualizar/Abrir |
| SPEI_07.nc.gz | Global 07-month 1901-2009 SPEI | 318,44 MB | NetCDF file | Visualizar/Abrir |
| SPEI_08.nc.gz | Global 08-month 1901-2009 SPEI | 318,24 MB | NetCDF file | Visualizar/Abrir |
| SPEI_09.nc.gz | Global 09-month 1901-2009 SPEI | 318,03 MB | NetCDF file | Visualizar/Abrir |
| SPEI_10.nc.gz | Global 10-month 1901-2009 SPEI | 317,81 MB | NetCDF file | Visualizar/Abrir |
| SPEI_11.nc.gz | Global 11-month 1901-2009 SPEI | 317,59 MB | NetCDF file | Visualizar/Abrir |
| SPEI_12.nc.gz | Global 12-month 1901-2009 SPEI | 317,37 MB | NetCDF file | Visualizar/Abrir |
| SPEI_13.nc.gz | Global 13-month 1901-2009 SPEI | 317,15 MB | NetCDF file | Visualizar/Abrir |
| SPEI_14.nc.gz | Global 14-month 1901-2009 SPEI | 316,93 MB | NetCDF file | Visualizar/Abrir |
| SPEI_15.nc.gz | Global 15-month 1901-2009 SPEI | 316,7 MB | NetCDF file | Visualizar/Abrir |
| SPEI_16.nc.gz | Global 16-month 1901-2009 SPEI | 316,47 MB | NetCDF file | Visualizar/Abrir |
| SPEI_17.nc.gz | Global 17-month 1901-2009 SPEI | 316,22 MB | NetCDF file | Visualizar/Abrir |
| SPEI_18.nc.gz | Global 18-month 1901-2009 SPEI | 315,98 MB | NetCDF file | Visualizar/Abrir |
| SPEI_19.nc.gz | Global 19-month 1901-2009 SPEI | 315,72 MB | NetCDF file | Visualizar/Abrir |
| SPEI_20.nc.gz | Global 20-month 1901-2009 SPEI | 315,46 MB | NetCDF file | Visualizar/Abrir |
| SPEI_21.nc.gz | Global 21-month 1901-2009 SPEI | 315,21 MB | NetCDF file | Visualizar/Abrir |
| SPEI_22.nc.gz | Global 22-month 1901-2009 SPEI | 314,94 MB | NetCDF file | Visualizar/Abrir |
| SPEI_23.nc.gz | Global 23-month 1901-2009 SPEI | 314,68 MB | NetCDF file | Visualizar/Abrir |
| SPEI_24.nc.gz | Global 24-month 1901-2009 SPEI | 314,42 MB | NetCDF file | Visualizar/Abrir |
| SPEI_25.nc.gz | Global 25-month 1901-2009 SPEI | 314,16 MB | NetCDF file | Visualizar/Abrir |
| SPEI_26.nc.gz | Global 26-month 1901-2009 SPEI | 313,9 MB | NetCDF file | Visualizar/Abrir |
| SPEI_27.nc.gz | Global 27-month 1901-2009 SPEI | 313,64 MB | NetCDF file | Visualizar/Abrir |
| SPEI_28.nc.gz | Global 28-month 1901-2009 SPEI | 313,39 MB | NetCDF file | Visualizar/Abrir |
| SPEI_29.nc.gz | Global 29-month 1901-2009 SPEI | 313,13 MB | NetCDF file | Visualizar/Abrir |
| SPEI_30.nc.gz | Global 30-month 1901-2009 SPEI | 312,86 MB | NetCDF file | Visualizar/Abrir |
| SPEI_31.nc.gz | Global 31-month 1901-2009 SPEI | 312,61 MB | NetCDF file | Visualizar/Abrir |
| SPEI_32.nc.gz | Global 32-month 1901-2009 SPEI | 312,35 MB | NetCDF file | Visualizar/Abrir |
| SPEI_33.nc.gz | Global 33-month 1901-2009 SPEI | 312,09 MB | NetCDF file | Visualizar/Abrir |
| SPEI_34.nc.gz | Global 34-month 1901-2009 SPEI | 311,82 MB | NetCDF file | Visualizar/Abrir |
| SPEI_35.nc.gz | Global 35-month 1901-2009 SPEI | 311,57 MB | NetCDF file | Visualizar/Abrir |
| SPEI_36.nc.gz | Global 36-month 1901-2009 SPEI | 311,31 MB | NetCDF file | Visualizar/Abrir |
| SPEI_37.nc.gz | Global 37-month 1901-2009 SPEI | 311,05 MB | NetCDF file | Visualizar/Abrir |
| SPEI_38.nc.gz | Global 38-month 1901-2009 SPEI | 310,79 MB | NetCDF file | Visualizar/Abrir |
| SPEI_39.nc.gz | Global 39-month 1901-2009 SPEI | 310,54 MB | NetCDF file | Visualizar/Abrir |
| SPEI_40.nc.gz | Global 40-month 1901-2009 SPEI | 310,27 MB | NetCDF file | Visualizar/Abrir |
| SPEI_41.nc.gz | Global 41-month 1901-2009 SPEI | 310,02 MB | NetCDF file | Visualizar/Abrir |
| SPEI_42.nc.gz | Global 42-month 1901-2009 SPEI | 309,76 MB | NetCDF file | Visualizar/Abrir |
| SPEI_43.nc.gz | Global 43-month 1901-2009 SPEI | 309,51 MB | NetCDF file | Visualizar/Abrir |
| SPEI_44.nc.gz | Global 44-month 1901-2009 SPEI | 309,25 MB | NetCDF file | Visualizar/Abrir |
| SPEI_45.nc.gz | Global 45-month 1901-2009 SPEI | 309 MB | NetCDF file | Visualizar/Abrir |
| SPEI_46.nc.gz | Global 46-month 1901-2009 SPEI | 308,74 MB | NetCDF file | Visualizar/Abrir |
| SPEI_47.nc.gz | Global 47-month 1901-2009 SPEI | 308,48 MB | NetCDF file | Visualizar/Abrir |
| SPEI_48.nc.gz | Global 48-month 1901-2009 SPEI | 308,22 MB | NetCDF file | Visualizar/Abrir |
| file_list.txt | List of all files comprising the SPEIbase | 2,91 kB | Plain text | Visualizar/Abrir |
| readme.txt | Notes | 2,12 kB | Plain text | Visualizar/Abrir |
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