airnow_downloadParseData: Download and aggregate multiple hourly data files from AirNow

In PWFSLSmoke: Utilities for Working with Air Quality Monitoring Data

Description

This function makes repeated calls to airnow_downloadHourlyData to obtain data from AirNow. All data obtained are then combined into a single tibble and returned.

Parameters included in AirNow data include at least the following list:

1. BARPR

2. BC

3. CO

4. NO

5. NO2

6. NO2Y

7. NO2X

8. NOX

9. NOOY

10. OC

11. OZONE

12. PM10

13. PM2.5

14. PRECIP

15. RHUM

16. SO2

17. SRAD

18. TEMP

19. UV-AETH

20. WD

21. WS

Passing a vector of one ore more of the above names as the parameters argument will cause the resulting tibble to be filtered to contain only records for those parameters.

Usage

airnow_downloadParseData(
  parameters = NULL,
  startdate = strftime(lubridate::now(tzone = "UTC"), "%Y%m%d00", tz = "UTC"),
  hours = 24
)

Arguments

parameters	vector of names of desired pollutants or NULL for all pollutants
startdate	desired start date (integer or character representing YYYYMMDD[HH])
hours	desired number of hours of data to assemble

Value

Tibble of aggregated AirNow data.

Note

As of 2016-12-27, it appears that hourly data are available only for 2016 and not for earlier years.

See Also

airnow_createDataDataframes

airnow_downloadHourlyData

Examples

## Not run: 
# Fail gracefully if any resources are not available
try({

tbl <- airnow_downloadParseData("PM2.5", 2016070112, hours = 24)

}, silent = FALSE)

## End(Not run)

PWFSLSmoke documentation built on Nov. 23, 2021, 5:06 p.m.