goesaodc_scaleAOD: Converts raw, signed short AOD values from GOES 16 & 17...

In MazamaScience/MazamaSatelliteUtils: Utilities for Working with Model and Satellite Data as Rasters

Description

Performs a series of conversions to raw AOD values from .nc file #'

• 0 – Converts _FillValue entries to NA

• 1 – Converts signed short values into unsigned short values

• 2 – Applies scale_factor and aod_offset to create correctly scaled AOD values

Usage

goesaodc_scaleAOD(aod_data, aod_attributes)

Arguments

aod_data	raw, signed short AOD data read in from GOES .nc file
aod_attributes	AOD metadata read in from GOES .nc file

Value

Matrix of properly scaled AOD values.

Note

As of ncdf4 version 1.16.1, the signedbyte flag is only used to interpret singlye byte values. GOES AODC values are written as unsigned short int but ncdf4::ncvar_get() interprets these 16 bits as signed short int. Hence the need for conversion.

MazamaScience/MazamaSatelliteUtils documentation built on Dec. 17, 2021, 3:20 a.m.