https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 24.9 2026-09-30T10:52:06.201Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/079e6699-efbf-4358-9047-b668b459fc22 2012-06-25 HEAT/COLD WAVE FREQUENCY/INTENSITY Date=2012-06-25 User Id=mpmorahan Entity=BroaderRelation Operation=INSERT User Note=Insert Concept System Note=add broader relation New Value=HEAT/COLD WAVE FREQUENCY/INTENSITY [079e6699-efbf-4358-9047-b668b459fc22,39657] - EXTREME WEATHER [b29b46ad-f05f-4144-b965-5f606ce96963,39651] Date=2024-09-23 User Id=tstevens Entity=Definition Operation=INSERT System Note=insert Definition New Value=id: null text: Refers to a frequency and intensity of a heat wave and cold wave. A heat wave is a period of abnormally hot weather generally lasting more than two days. Heat waves can occur with or without high humidity. They have potential to cover a large area, exposing a high number of people to hazardous heat. A cold wave is a weather event involving a cooling of the air, or the invasion of very cold air, over a large area. It is marked by a drop of average temperature well below the averages of a region. Cold waves can have negative impacts on people, crops, properties, and services. They can be preceded or accompanied by significant winter weather events, such as blizzards or ice storms. And they can feel even colder during periods of high winds. language code: en Refers to a frequency and intensity of a heat wave and cold wave. A heat wave is a period of abnormally hot weather generally lasting more than two days. Heat waves can occur with or without high humidity. They have potential to cover a large area, exposing a high number of people to hazardous heat. A cold wave is a weather event involving a cooling of the air, or the invasion of very cold air, over a large area. It is marked by a drop of average temperature well below the averages of a region. Cold waves can have negative impacts on people, crops, properties, and services. They can be preceded or accompanied by significant winter weather events, such as blizzards or ice storms. And they can feel even colder during periods of high winds. 2024-09-23 10:32:31.0