standardized precipitation index r
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standardized precipitation index r


[![Rdoc](http://www.rdocumentation.org/badges/version/SPEI)](http://www.rdocumentation.org/packages/SPEI).

and ISD data) using functions from the ‘rnoaa’ package to obtain and compile weather time series for U.S. counties. The available data is automatically downloaded from a data repository and processed into a ‘tibble’ for the exact range of years requested. FedData: Functions to Automate Downloading Geospatial Data Available from Several Federated Data Sources. .

VICmodel: Implementation of the Variable Infiltration Capacity (VIC) model, a macroscale hydrologic model that solves full water and energy balances, originally developed by Xu Liang at the University of Washington (UW).

USGS web services Hydrograph analysis (functions for working with streamflow data, e.g. flow statistics, trends, biological indices, etc.). meteo: Spatio-temporal geostatistical mapping of meteorological data. It is a good pre- processing and post-processing tool for hydrological and hydraulic modellers. fasstr for downloading Southern Oscillation Index, Oceanic Nino Index and North Pacific Gyre Oscillation data. RNRCS: Package to download Natural Resources Conservation Service (NRCS) soil and snow data including SCAN, SNOTEL, and SNOLITE. . Description.

Lopez-Moreno. lulcc: Classes and methods for spatially explicit land use change modelling. biotic: Calculates a range of UK freshwater invertebrate biotic indices including BMWP, Whalley, WHPT, Habitat-specific BMWP, AWIC, LIFE and PSI.

Standardized precipitation evapotranspiration index (SPEI) revisited: parameter fitting, evapotranspiration models, tools, datasets and drought monitoring.
paper

One unique feature is that the SPI can be used to monitor conditions on a variety of time scales. Provides function to compare and analyse time series. Facilitates discovery and handling of hydrological data, access to catalogues and databases.

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bigleaf: Calculation of physical (e.g. aerodynamic conductance, surface temperature), and physiological (e.g. canopy conductance, water-use efficiency) ecosystem properties from eddy covariance data and accompanying meteorological measurements. KISTERS WISKI databases datasets. Evapotranspiration: Functions to calculate potential evapotranspiration (PET) and actual evapotranspiration (AET) from 21 different formulations including Penman, Penman-Monteith FAO 56, Priestley-Taylor and Morton models.

NHD [ ] Complete the documentation for pwmLC.Rd. The The index only uses precipitation data and ranges between −3 to +3. rpdo: Get Monthly Pacific Decadal Oscillation (PDO) index values from January 1900 to present. 2014.

Corrected an error in the function \code{\link{spi}} which resulted in wrong handling of zero precipitation months when using the Gamma or PearsonIII distribution. fuse: An R package implementing the Framework for Understanding Structural Errors SCI: Functions for generating Standardized Climate Indices (SCI).

See

humidity: Functions for calculating saturation vapor pressure (hPa), partial water vapor pressure (Pa), relative humidity (%), absolute humidity (kg/m^3), specific humidity (kg/kg), and mixing ratio (kg/kg) from temperature (K) and dew point (K). getMet: Functions for sourcing, formatting, and editing meteorological data for hydrologic models. water: Tools and functions to calculate actual Evapotranspiration using surface energy balance models. Added new dataset \code{\link{cabinda}} from Allen et al. spei.csic.es. based on Standard Operating Policy (SOP). hydroGOF: S3 functions implementing both statistical and graphical goodness-of-fit measures between observed and simulated values, mainly oriented to be used during the calibration, validation, and application of hydrological models. View source: R/spi.R.


© 2017 The Authors.

Facilitates programmatic access to search for, acquire, and extract NASA Soil Moisture Active Passive (SMAP) data.

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