Interactive 2Dplus Visualizer

What This Page Does

This page links interactive Plotly relationship plots with sampling-location maps for selected reference datasets.

Select a reference data source and set the sidebar filters.
Choose a plot type: Temperature–Salinity, δD–δ18O, custom 2D/2.5D, or Salinity–δ18O.
Select a color parameter and colormap where those controls are available.
Select Apply settings after changing the filters.
Use Box Select or Lasso Select on an interactive scatter plot.
Inspect the corresponding sampling locations and selected-data table.

Plot type — Temperature–Salinity, δD–δ18O, custom 2D/2.5D beta, or Salinity–δ18O
Color parameter
Colormap
Density contour interval (approx. σ0) — spacing between approximate σ0 reference contour lines on the T–S diagram (0.2, 0.5, or 1.0 kg m⁻³; default 1.0 kg m⁻³). Available only in the Temperature–Salinity view.
Show density contours — show or hide the approximate σ0 reference lines
Regression line for salinity-d18O view
Map controls / Map style

The regression line is intended for quick visual reference.
Box/Lasso selection depends on Plotly interaction behavior.
Very dense selections may be slower on older computers.
This page does not accept browser uploads. Use User Data Check & Quick Visualizer or a page with an Uploaded data overlay for session-only uploaded data.
The T–S diagram density contour lines are approximate σ0 reference contours, not pointwise sample density. They are computed by passing Practical Salinity (≈ Absolute Salinity) and in-situ temperature (≈ Conservative Temperature) to gsw.sigma0. The contour lines serve as visual reference guides only. Differences from true TEOS-10 σ0 vary by data source, geographic location, depth, and hydrographic conditions.
The contour grid is bounded by the displayed axis range and clipped to the quality-checked input domain (Salinity 0–50; Temperature −5–45 °C).