Description: | Replacement of LI-200 sensor (total downwelling shortwave radiation, variable r_tot) by a
new LI-190 sensor (upwelling photosynthetic photon flux density, variable ppfd_up).
The new LI-190 sensor was:
- installed on December 9, 2004.
- being tested from December 9, 2004 to December 22, 2004.
- operational after December 22, 2004.
Consequently:
1. variable "r_tot" is filled with missing values (qc_r_tot = 1) after December 9, 2004,
2. variable "ppfd_up" is filled with missing values (qc_ppfd_up = 1) prior December 22,
2004. |