Dataset: Mercury and Trace Elements in Mt. Mansfield Throughfall Samples

Methods

The methods followed in the creation of the dataset, including description of field, laboratory and processing steps, and quality control procedures

Past Methods (No longer in use)

• Fog water and throughfall collection and anal
  Started: 1998-08-01
  Ended: 1998-10-31

  Fog water and throughfall is collected during periods when clouds are present but no precipitation is occuring. Samples are analyzed for pH and conductivity in the field, then lab analyzed for nitrate, sulfate, ammonium, calcium, sodium, chlorine, potassium and mercury.
• Cloud events
  Started: 1998-08-01
  Ended: 1998-10-31

  Eight cloud events were sampled from August 10 to October 16, and 3 events for cloud drip.

Dataset Fields

Detailed documentation of the fields comprising the dataset, including the type of measurement, units where applicable, and any controlled vocabularies or code lists present in the data

Sampling Equipment

Equipment and software used to collect data, including how that equipment was used.

Current Equipment

• Fog water collector
  
  

  Fog water collectors were passive Teflon string-filter collector. Cloud drip under the canopy was collected using three paired glass and polypropylene funnels.

Past Sampling Equipment (No longer in use)

• Fog water collector
  Started: 1998-08-10
  Ended: 1998-10-16

  Fog collector is passive Teflon string-filter collector. Throughfall collected in 3 sets of paired glass and polypropylene funnels.

Site Characteristics

The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection

• Site Description

  Summit of Mount Mansfield south of the Nose. Fog collector in open near WCAX building. Throughfall collector under balsam fir trees.