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Motion Chart for Seasonal Aggregations

Explanation of Chart    

 

Explanation of Chart

  • Each bubble represents a CASTNET site.
  • Change the vertical axis, horizontal axis, color or size of bubbles using the drop down menus in the axes or legend to the right of the chart.
  • View the data associated with a bubble by mousing over it; values are displayed on the axes and legend frames.
  • The size of the bubble is proportionate to the value of the Size variable and the size and value of the outline in the Size legend.
  • Set bubbles in motion over time by pressing Play.
  • Track a site's changes over time by clicking on its bubble or checking its box within the Select frame and press Play.
  • Change the opacity of non-selected bubbles, or eliminate them entirely, using the Opacity scale in the wrench at the bottom right of the chart.
  • View a time series by selecting Time on the horizontal axis and press Play.
  • Change the chart type by clicking on the bar graph or linear chart in the upper right corner of the plot.
  • Change the axes by selecting linear or logarithmic from the drop down menus. Scales adjust automatically to the range of data.
  • View data used to create this chart.

 

Explanation of Variables

Conc HNO3 (ug/m3)Seasonal mean ambient concentration of gaseous HNO3; ug/m3.
Conc NH4 (ug/m3)Seasonal mean ambient concentration of particulate NH4; ug/m3.
Conc NO3 (ug/m3)Seasonal mean ambient concentration of particulate NO3; ug/m3.
Conc SO2 (ug/m3)Seasonal mean ambient concentration of gaseous SO2; ug/m3.
Conc SO4 (ug/m3)Seasonal mean ambient concentration of particulate SO4; ug/m3.
Conc Total NO3 (ug/m3)Seasonal mean ambient concentration of total nitrate (HNO3 + NO3); ug-NO3/m3.
IdUnique ID for site and season. Only sites with 10 or more years of data are included.
RegionGeographic region.
SeasonSeason of measurement; Winter=December-February, Summer=June-August.
Unit CO2 200km (KTons)CO2 emissions for regulated stationary sources within 200 km of the monitoring site; Ktons.
Unit Heat 200km (TBTU)Heat output for regulated stationary sources within 200 km of the monitoring site; TBTU.
Unit NOx 200km (KTons)NOx emissions for regulated stationary sources within 200 km of the monitoring site; Ktons.
Unit SO2 200km (KTons)SO2 emissions for regulated stationary sources within 200 km of the monitoring site; Ktons.
YearYear of measurement.

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