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GEUS-Glaciology-and-Climate / pypromice

Process AWS data from L0 (raw logger) through Lx (end user)
https://pypromice.readthedocs.io
GNU General Public License v2.0
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Add gps_alt, gps_lon, gps_lat to the variables filtered by persistence QC #238

Closed BaptisteVandecrux closed 1 month ago

BaptisteVandecrux commented 2 months ago

Issue spotted at numerous sites. Example here at TAS_A:

https://github.com/GEUS-Glaciology-and-Climate/PROMICE-AWS-data-issues/issues/114

BaptisteVandecrux commented 1 month ago

Of course there are complications with the use of persistence QC.

At several sites, lat/lon/elevation have degraded precision, which, depending on the magnitude and direction of their movement, lead to long periods of constant longitude or latitude that are not a malfunction, but many good measurement rounded and saved with identical digits.

If we use persistence QC in those situation, we will throw out true measurements. See an example below with NUK_L: billede