Marine water quality monitoring

Parameters

 Washington State Department of Ecology
 parameter  abbr  unit  profile  discrete sample  method(s)  comment 
Beam_c@670 nm Beam_c m^-1 true true calculated, @670 nm  
Chlorophyll a Chla ug/L false true Lorenzen, 1966 as of 7/1/99; SM10200H3 before
Conductivity Cond umhos false false unknown  
Density Density sigma-t true true calculated, UNESCO 1983  
Dissolved Oxygen DO mg/L true true membrane sensor Beckman 11/1/89-10/2/01; SBE after; various before
Dissolved Oxygen-Saturation DOSat % false true calculated  
Enterococci Entero #/100ml false true EPA 1600 Manchester Lab
Fecal Coliform FC #/100ml false true SM16-909C Manchester Lab
Ammonia-un-ionized NH3UN mg/L false true calculated, EPA  
Ammonium (dissolved) NH4(uM)D uM false true Slawyk and Mac Isaac, Univ. Washington Ocean Lab
Ammonium-Ammonia (dissolved) NH43D mg/L false true dissolved SM4500NH3H Manchester Lab
Ammonium as N (total) NH4T mg/L false true total SM4500NH3H Manchester Lab
Nitrite (dissolved) NO2(uM)D uM false true UNESCO 1994 Univ. Washington Ocean Lab
Nitrite-Nitrate (dissolved) NO23D mg/L false true dissolved SM4500NO3I Manchester Lab
Nitrate-Nitrite as N (total) NO23T mg/L false true total SM4500NO3I Manchester Lab
Nitrite (dissolved) NO2D mg/L false true dissolved EPA 353.2 Manchester Lab
Nitrite (total) NO2T mg/L false true total EPA 353.2 Manchester Lab
Nitrate (dissolved) NO3(uM)D uM false true UNESCO 1994 Univ. Washington Ocean Lab
Ortho-Phosphate (dissolved) OPD mg/L false true dissolved SM4500PG Manchester Lab
Ortho-Phosphate (total) OPT mg/L false true total SM4500PG Manchester Lab
pH pH pH true true SeaBird SBE18 sensor since 11/1/89
Pheopigments Pheo ug/L false true Lorenzen, 1966 as of 7/1/99; SM10200H3 before
Ortho-Phosphate (dissolved) PO4(uM)D uM false true UNESCO 1994 Univ. Washington Ocean Lab
Total Phosphorus PT mg/L false true SM4500PI Manchester Lab
Salinity Salinity PSU true true SeaBird SBE conductivity cell PSS-78 since 11/1/89; various before (unit PPT)
Secchi Depth Secchi m false true 30-cm white disk since 10/1/92; 20-cm white-black before
Silicate (SIOH4) (dissolved) SiOH4(uM)D uM false true UNESCO 1994 Univ. Washington Ocean Lab
Temperature, water Temp deg C true true SeaBird SBE thermistor since 11/1/89
Total Organic Carbon TOC mg/L false false unknown  
Turbidity (historical) Turbidity unknown units false false unknown  
Light Transmission Xmiss_25cm % true true transmissometer SeaTech 11/1/89-10/2/01; WetLabs after
  Xmiss_Uncorr % false false SeaTech sensor, uncalibrated  

Units

 abbr  description 
#/100ml number per hundred milliliters
% percent
deg C degrees Celsius (Centigrade)
m meters
m^-1 per meter
mg/L milligrams per liter
pH pH units
PSU Practical Salinity Unit (~ equal to part per thousand)
sigma-t sigma-t = (density (kg/m3) - 1 )* 1000
ug/L micrograms per liter
uM micro molar
umhos micro mhos (mho = 1/ohm = 1 Siemen)