Monterey Bay Aquarium Research Institute

Biogeochemistry

Monterey Bay Time Series Summary

Home Projects Information Roadmap

Depth Contours

 Characterization Seasonal Anomalies Yearly Averages

For use in publication, authors must obtain written permission from  Francisco Chavez.  You must acknowledge MBARI as the data source in those publications and provide reprints to the MBARI library. 

Graphs and reports of core properties from shipboard CTD bottle samples taken in Monterey Bay, from 1989-Present. Profiling CTD graphs. Time series cruises occurred at approximately 21 days intervals.  From 1989-1992 the cruises occupied 4 stations at which complete sampling was conducted (stations C1, H1, H3, C7), but in 1993 these stations were reduced to 3 along an onshore/offshore transect (stations C1, Mooring1; Mooring2).  Major stations consist of C1, C7, H1, H3, Mooring1, and Mooring2.  Included in the time series data are the quarterly hydrographic surveys for the stations C1; 67-50,Mooring1, H3; 67-55 and Mooring2.  (station mapmethods and materials).  

Chemical and taxonomic updates lag the physical and biological as these parameters are batch processed.  Taxonomic updates occur once, at the end of the year while the nutrients are updated quarterly.

DEPTH CONTOURS

Physical (temperature, salinity, sigma T), biological (chlorophyll, primary production, fluorescence) and chemical (nitrate, phosphate, silicate) characteristics, from 1989 to 2010.  Chemical data were only taken at station M1 for the time series.    These graphs were produced by MatLab using trisurf() and shade interp.  Please be aware that the scaling may be different for each graph, this may affect comparisons by stations.  Click on one of the thumbnails below for an enlarged image.
Last updated 01/18/2011

Major Station (composite of 5 stations), Physical and Biological

3 contour graphs, time vs paramter, from major stations of temperature c, salinity psu, and density 3 contour graphs, time vs paramter, from major stations of chlorophyll mg m-3, primary production mg m-3, and fluorescence volts

C1, coastal station,  Physical  and Biological

3 contour graphs, time vs paramter, from station C1 of temperature c, salinity psu, and density 3 contour graphs, time vs paramter, from station C1 of chlorophyll mg m-3, primary production mg m-3, and fluorescence volts

M1 and H3, mid-bay stations, Physical, Biological, and Chemical

3 contour graphs, time vs paramter, from M1 of temperature c, salinity psu, and density 3 contour graphs, time vs paramter, from station M1 of chlorophyll mg m-3, primary production mg m-3, and fluorescence volts 3 contour graphs, time vs paramter, from station M1 of Nitrate uM, Phosphate um, and Silicate uM

M2, outer bay station, Physical, Biological

3 contour graphs, time vs paramter, from station M2 of temperature c, salinity psu, and density 3 contour graphs, time vs paramter, from station M2 of chlorophyll mg m-3, primary production mg m-3, and fluorescence volts

 

Top Depth Contours Surface Characteristics Seasonal Anomalies Yearly Averages

TMP_maj_0m_char.jpg (138685 bytes) SURFACE CHARACTERISTICS

A 3 panel figure of surface (depth < 10m) characteristics: Anomalies, Daily Averages, and Seasonal Cycle of physical , biological , chemical , and taxonomic  properties over a 20+ year period, from 1989 to present.  

Nitrate profiles were collected  only at the Mooring1 site.  Characteristics for additional depths (60, 100, 150, and 200m) may be found here.

Data were daily averaged,  interpolated to 14 day intervals, and smoothed (9 point smoothing for the anomalies and 3 point smoothing for the annual cycle).  Anomalies were calculated by subtracting the interpolated value from averaged values for the corresponding 14 day interval.  Stations Mooring1, H3, 67-50 have been combined.  Stations Mooring, 67-55 have been combined.  Major stations are C1, C7, H1, H3, Mooring1, and Mooring2.

A 9 point running mean (red line) was added to the Daily Average graph  as well as a linear regression (green line); daily averaged values are represented as the blue dots. The slope from the linear regression is per day. 

Please note the Seasonal Cycle has a 3 point running mean applied.  Also shown in this graph is the climatology (black dashed lines) contrasted to the annual mean for the last three years, i.e. 1997, 1998, and 1999 (blue line). 

These graphs were produced by MatLab.   Interpolation is the Stineman method.   
Last update:01/25/2008

  Major Stations C1 Mooring1 Mooring2
Temperature (°C)

JPG  TIFF

JPG  TIFF JPG  TIFF JPG TIFF
Salinity JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Sigma T JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Nitrate (µM) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Phosphate (µM) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Silicate (µM) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
60m nitrate/phosphate (uM) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Growth Rate JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Phytoplankton/Chlorophyll 0m JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Chlorophyll (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Chlorophyll (mg m-2) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
1µ Chlorophyll (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
5µ Chlorophyll (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Primary Production (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Primary Production (mg m-2) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Surface Productivity Index (mg C/mg Chl m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Productivity Index (mg C/mg Chl m-2) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Fluorescence (volts) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Conductivity (siemens m) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
All phytoplankton (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
All Diatoms (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
All Dinoflagellates (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
All Heterotrophs (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
All phytoplankton - picoplankton (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Pico Phytoplankton (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Centric Diatoms (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Pennate Diatoms (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Synechococcus (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Red Fluorescing Picoplankton (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Prasinophyte (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Haptophyte (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Autotrophic Flagellate (mg m-3) JPG TIFF JPG TIFF JPG TIFF

JPG TIFF

Autotrophic Dinoflagellate(mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Cryptomonad (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Autotrophic Protist Carbon (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Heterotrophic Flagellate (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Heterotrophic Dinoflagellate (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Heterotrophic Protist Carbon (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Chanoflagellate (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
Leucocryptos (mg m-3) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
FCM Prochlorophytes (cell ml) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
FCM Synechoccocus (cel ml) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
FCM Picoeukaryotes (cell ml) JPG TIFF JPG TIFF JPG TIFF JPG TIFF
FCM Heterotrophic Bacteria (cell ml) JPG TIFF JPG TIFF JPG TIFF JPG TIFF

seasonal_anom_phys_c1.jpg (108143 bytes)Seasonal Anomalies

Physical, biological, taxonomic, and chemical properties of surface or integrated values over time.  The data are displayed as seasonal anomalies where the seasonal cycle (heavy black line) is augmented with positive (red fill) or negative (blue fill) anomalies along the y axis.  The data have been grid (14 day intervals) using the Stineman interpolation method and a 14 point running average was applied.  Trend lines (green) were calculated on the running averaged data.

Data are presented by station: C1, M1, M2 and a composite of the major stations (C1, C7, H1, H3, M1, M2).  Physical data are temperature, salinity, and sigma t.  Biological data are chlorophyll, primary production (at 100% surface intensity), and fluorescence.  Chemical data are nitrate, phosphate, and silicate.  Depth integrated values are chlorophyll, primary production, and productivity index.  Characteristics for additional depths (20, 40, 60, 80,100, 150, and 200m) may be found here.

Taxonomic data are sampled at the surface only.  Data are post processed and lags by 1 year.   Taxonomic groups for 2001 were updated 5 June 2002.  Processing for 2003 will be complete in 200?.

Data set   Stations    
Physical C1 M1 M2 Major 
Biological C1 M1 M2 Major
Chemical C1 M1 M2 Major
Depth Integrated C1 M1 M2 Major
Taxonomic set 1
diatoms
C1 M1 M2 Major
Taxonomic set 2
flagellates
C1 M1 M2 Major
Taxonomic set 3
dinoflagellates
C1 M1 M2 Major
Taxonomic set 4
Picophytoplankton
C1 M1 M2 Major
Taxonomic set 5 C1 M1 M2 Major
Taxonomic set 6 C1 M1 M2 Major
Taxonomic set 7 C1 M1 M2 Major

Surface seasonal anomalies are also available as stacked graphs for select parameters: Temperature, Temperature at 60m, Salinity, Chlorophyll, Primary Production, Nitrate, Picophytoplankton, and Centric diatoms.

Major Stations C1 M1 M2

 

Top Depth Contours Surface Characteristics Seasonal Anomalies Yearly Averages

YEARLY STATION AVERAGES

Surface and Integrated Depths: Physical , biological  and chemical averages by year .  Data have been interpolated to a 14 day interval (Stineman method) and averaged by year and station. Stations Mooring1 (M1), H3, and 67-50 have been combined, as have stations Mooring2 (M2) and 67-55.  Updated 08/20/01

Property

Stations

 
PHYSICAL        
Temperature (°C) C1 M1 M2

Major

Salinity C1 M1 M2 Major
Sigma T C1 M1 M2 Major
Fluorescence (volts) C1 M1 M2 Major
Transmissivity (%) C1 M1 M2 Major
Conductivity (volts) C1 M1 M2 Major
CHEMICAL        
Nitrate (µM) C1 M1 M2 Major
Nitrite (µM) C1 M1 M2 Major
Phosphate (µM) C1 M1 M2 Major
Silicate (µM) C1 M1 M2 Major
BIOLOGICAL        
Chlorophyll (mg m-3) C1 M1 M2 Major
Chlorophyll (mg m-2) C1 M1 M2 Major
Phaeopigment (mg m-3) C1 M1 M2 Major
Primary Production (mg m-3) C1 M1 M2 Major
Primary Production (mg m-2) C1 M1 M2 Major
Productivity Index (mg C/mg Chl m-2) C1 M1 M2 Major
TAXONOMIC        
All Phytoplankton (mg m-3) C1 M1 M2 Major
All Diatoms (mg m-3) C1 M1 M2 Major
All Dinoflagellates (mg m-3) C1 M1 M2 Major
All Heterotrophs (mg m-3) C1 M1 M2 Major
Small Phytoplankton (mg m-3) C1 M1 M2 Major
Centric Diatoms (mg m-3) C1 M1 M2 Major
Pennate Diatoms (mg m-3) C1 M1 M2 Major
Cryptomonads (mg m-3) C1 M1 M2 Major
Prasinophyte  (mg m-3) C1 M1 M2 Major
Autotrophic Flagellate (mg m-3) C1 M1 M2 Major
Autotrophic Dinoflagellate (mg m-3) C1 M1 M2 Major
Autotrophic Cilliate (mg m-3) C1 M1 M2 Major
Heterotrophic Flagellate (mg m-3) C1 M1 M2 Major
Heterotrophic Dinoflagellate (mg m-3) C1 M1 M2 Major
Heterotrophic Cilliate (mg m-3) C1 M1 M2 Major
Choanoflagellate (mg m-3) C1 M1 M2 Major
Leucocryptos (mg m-3) C1 M1 M2 Major
Phaeocysts (mg m-3) C1 M1 M2 Major
Synechoccoccus s (mg m-3) C1 M1 M2 Major
Red Fluorescing Picoplankton (mg m-3) C1 M1 M2 Major
Haptophyte (mg m-3) C1 M1 M2 Major


Top Depth Contours Surface Characteristics Seasonal Anomalies Yearly Averages

If you have comments regarding this web pages you are welcome to contact us through our group's webmaster, reiko at mbari.org.

Last updated: Feb. 27, 2012