get_daymet: Download and crop the 1-km DAYMET daily weather dataset.

In crowcanyon/dssatr: R Bindings for the Decision Support System for Agrotechnology Transfer (DSSAT) Crop Simulation System

Description

This function purposefully masks the FedData::get_daymet() function, and will likely replace it eventually.

Usage

get_daymet(x, years = 1980:2016, vars = c("tmax", "tmin", "srad", "vp",
  "swe", "prcp", "dayl"))

Arguments

x	An object class sf to serve as a template
years	A numeric vector of years to extract.
vars	A character vector of variables to extract. The available variables are: dayl Duration of the daylight period in seconds per day. This calculation is based on the period of the day during which the sun is above a hypothetical flat horizon. prcp Daily total precipitation in millimeters per day, sum of all forms converted to water-equivalent. srad Incident shortwave radiation flux density in watts per square meter, taken as an average over the daylight period of the day. NOTE: Daily total radiation (MJ/m2/day) can be calculated as follows: srad*dayl/l000000 swe Snow water equivalent in kilograms per square meter. The amount of water contained within the snowpack. tmax Daily maximum 2-meter air temperature in degrees Celsius. tmin Daily minimum 2-meter air temperature in degrees Celsius. vp Water vapor pressure in pascals. Daily average partial pressure of water vapor.

crowcanyon/dssatr documentation built on May 14, 2019, 11:33 a.m.