SGP/EBBR/E2 - Reprocess: E2 EBBR Soil Temperature #2 Incorrect
Soil Temperature #2 was intermittently incorrect. The cause is unknown. The indicated measurements that are calculated using soil temperature are also incorrect. Soil moisture #2 (30 minute only) was also affected because version 6 of the EBBR datalogger program uses a multiplication of soil temperature and soil moisture as part of the adjustment of soil moisture for soil temperature. This was discovered to be a poor technique soon after it was implemented, but E2 will continue to use version 6 until a replacement EBBR unit is available. When soil temperature #2 is large negative, soil moisture #2 is often twice as large as it should be. EBBR unit changeout dates are listed on the EBBR instrument web page.
Recalculate the average soil heat flow (ave_shf), latent heat flux (e), and sensible heat flux (h) using only soil sets 1, 3, 4, and 5, as follows: ave_shf = (g1 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 + Bowen) h = -(q + e + ave_shf) where q is net radiation and Bowen is the Bowen ratio.