process_merra2_time

Identify the time step of data observations based on MERRA2 collection and
filter to time values in <code>from</code>.

internal

auxiliary

Functions are designed to facilitate access to and utility with large scale, publicly available environmental data in R. The package contains functions for downloading raw data files from web URLs (download_data()), processing the raw data files into clean spatial objects (process_covariates()), and extracting values from the spatial data objects at point and polygon locations (calculate_covariates()). These functions call a series of source-specific functions which are tailored to each data sources/datasets particular URL structure, data format, and spatial/temporal resolution. The functions are tested, versioned, and open source and open access. For sum_edc() method details, see Messier, Akita, and Serre (2012) <doi:10.1021/es203152a>.

Kyle Messier

amadeus

Accessing and Analyzing Large-Scale Environmental Data

Mitchell Manware

Insang Song

Eva Marques

Mariana Alifa Kassien

Elizabeth Scholl

Spatiotemporal Exposures and Toxicology Group 

process_merra2_time function

<dl><dt>collection</dt>
<dd>character(1). MERRA2 collection name.</dd>
<dt>from</dt>
<dd>SpatRaster(1). Object to extract time values from.</dd></dl>

Arguments

Process MERRA2 time steps — process_merra2_time

<dl>

<dt>collection</dt>
<dd>character(1). MERRA2 collection name.</dd>


<dt>from</dt>
<dd>SpatRaster(1). Object to extract time values from.</dd>

</dl>

Process MERRA2 time steps

process_merra2_time: Process MERRA2 time steps

Description

Usage

Value

Arguments