Table of Contents

AOD Access Functions

This pages describes AOD-specific access functions. For a general overview of EUBREWNET's access functions, as well as a description of common inputs, see the wiki page on the ozone access functions

See this presentation for a short overview of the AOD configuration and processing of DS measurements.


COMMON OPTIONS

Formats

Besides the common formats described here, the jsona format can also be used to produce 2d arrays for the aod_l and std_aod_l variables, see this example


GET FUNCTIONS

The output of the GET functions is stored in Eubrewnet's database, from where it's retrieved on each function call with little further processing. They are faster than their equivalent PROCESS functions, which process the data in real time, usually starting from the previous level. Whenever possible, GET functions should be used instead of the PROCESS equivalents.

Function Short Description Long Description Link
JG Returns the raw, L0 data from the JG measurements as measured by the Brewer JG Get JG
JL Returns the raw, L0 data from the JL measurements as measured by the Brewer JL Get JL
AODL1 Returns the Aerosol Optical Depth Level 1 product for DS measurements AODL1
AODL1ALL Returns the Aerosol Optical Depth Level 1 product for both DS and JG measurements AODL1ALL Get AODL1ALL
AODL1_5 Returns the Aerosol Optical Depth Level 1.5 product for DS measurements AODL1_5 Get AODL1_5
AODL1_5ALL Returns the Aerosol Optical Depth Level 1.5 product for both DS and JG measurements AODL1_5ALL Get AODL1_5ALL
AODL1_5byStation For the selected station, returns the Aerosol Optical Depth Level 1.5 product AODL1_5byStation Get AODL1_5byStation
AODConfigAll return all AOD configurations AODConfigAll Get AODConfigAll
AODConfigbyDate return the operative AOD configuration for the requested Brewer and date AODConfigbyDate Get AODConfigbyDate

Get JG


Get JL


Get AODL1


Get AODL1ALL


Get AODL1_5

Note: the airmass field corresponds to the aerosol airmass, which is currently approximated by the Rayleigh airmass.


Get AODL1_5ALL

Note: the airmass field corresponds to the aerosol airmass, which is currently approximated by the Rayleigh airmass.


Get AODL1_5byStation


Get AODConfigAll


Get AODConfigbyDate


PROCESS FUNCTIONS

Function Description Help Example
JGL1 Returns Level 1 JG corrected counts (dark counts, dead time, temperature, and filter attenuation) JGL1 Process AODL1JG
AODL1 Returns Level 1 DS corrected counts (dark counts, dead time, temperature, filter attenuation, Sun-Earth distance, and polarization) and AOD AODL1 Process AODL1
AODL1JG Returns Level 1 JG corrected counts and AOD AODL1JG Process AODL1JG
AODL1ALL Returns Level 1 DS and JG corrected counts and AOD AODL1ALL Process AODL1_5ALL
AODL1_5 Returns Level 1.5 AOD for DS measurements AODL1_5 Process AODL1_5
AODL1_5JG Returns Level 1.5 AOD for JG measurements AODL1_5JG Process AODL1_5JG
AODL1_5ALL Returns Level 1.5 AOD for DS and JG measurements AODL1_5ALL Process AODL1_5ALL

AOD Filter Flags

Flag name Flag value Description
FLAG_AOD_STD_FILT 1 The standard deviation of the AOD summaries is > 0.02
FLAG_AOD_AIRMASS_FILT 2 The airmass is larger than some threshold value (Nov 2020: not in use yet)
FLAG_AOD_MIN_FILT 8 AOD < 0
FLAG_AOD_MAX_FILT 16 AOD > 4
FLAG_AOD_BLACKLIST 32 Date in the exclusion list
FLAG_AOD_BAD_OZONE_FILT 64 The ozone data does not have a filter_flag of 0

Process JGL1


Process AODL1


Process AODL1JG


Process AODL1ALL


Process AODL1_5


Process AODL1_5JG


Process AODL1_5ALL