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TSS Issue in VA Mainstem Stations

TSS Issue in VA Mainstem Stations. Rick Hoffman AMQAW 9/21/2007. 1/1/1996. Data Pattern Changes. Surface TSS Concentration. ODU Sampling (14 Cruises/year). VIMS Sampling (18 Cruises/Year). Doesn’t seem consistent across stations or coincident with sampling organization change.

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TSS Issue in VA Mainstem Stations

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  1. TSS Issue in VA Mainstem Stations Rick Hoffman AMQAW 9/21/2007

  2. 1/1/1996 Data Pattern Changes Surface TSS Concentration ODU Sampling (14 Cruises/year) VIMS Sampling (18 Cruises/Year) Doesn’t seem consistent across stations or coincident with sampling organization change

  3. Station CB7.1N 1/1/1996 1/1/1996 Surface Bottom Doesn’t seem consistent across depths within some stations

  4. Station LE3.7 1/1/1996 1/1/1996 Surface Bottom Doesn’t seem consistent across depths within some stations

  5. 1/1/1996 Possibly Involves Riverflow Begin of “Drought” years (1/1/1999) Rappahannock Riverflow

  6. Need to Examine further for Methodological Effects • Examine Protocols • Filters? Volume filtered? • Vacuum pressure? • Pump/hose? • Examine Data • CSSP (Information or data), pre 1996 only • CB5.3 CBL/VIMS “Overlap” station • Consistency (is lab X un-usually inconsistent in comparison to other labs or stations) • TP/TSS Ratio? Secchi/TSS ratio? • Relation to Flow?

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