MLchartDataset catalogue

Storm-relative environmental helicity

Term · Meteorology and atmospheric science · MLC-T-MET-009285

A measure of the potential for a rotating updraft (mesocyclone) within a thunderstorm, calculated from the wind shear and storm motion. It quantifies the amount of streamwise vorticity available to be ingested by a storm's updraft. Values above 150 m^2/s^2 are often associated with supercell thunderstorms and potential for tornadoes.

Table 1. Record
IdentifierMLC-T-MET-009285
FieldMeteorology and atmospheric science
AbbreviationSREH
Record as JSON 
{
  "id": "MLC-T-MET-009285",
  "term": "Storm-relative environmental helicity",
  "field": "Meteorology and atmospheric science",
  "definition": "A measure of the potential for a rotating updraft (mesocyclone) within a thunderstorm, calculated from the wind shear and storm motion. It quantifies the amount of streamwise vorticity available to be ingested by a storm's updraft. Values above 150 m^2/s^2 are often associated with supercell thunderstorms and potential for tornadoes.",
  "abbreviation": "SREH",
  "url": "https://mlchart.com/terminology/meteorology/storm-relative-environmental-helicity/"
}

Record 9,140 of 10,756 in Meteorology and atmospheric science terminology (MLC-0110). Request the full dataset.