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Noctilucent cloud

Noctilucent clouds (NLCs), or night shining clouds, are tenuous cloud-like phenomena in the upper atmosphere. When viewed from space, they are called polar mesospheric clouds (PMCs), detectable as a diffuse scattering layer of water ice crystals near the summer polar mesopause. They consist of ice crystals and from the ground are only visible during…

Formation, Discovery and investigation & Observation

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Formation

Water iceNmMesosphereAeronomy of Ice in the MesosphereUpper atmosphere
32 related topics

Discovery and investigation

1883 eruption of KrakatoaGermanyFoersterBerlin ObservatoryWegener
23 related topics

Observation

OzoneCirrus cloudsParisUtahItaly
10 related topics

Description from satellites

NASAEsrangeNunavutCanadaGravity waves
8 related topics

Key facts & relationships

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Abbreviation
NLC/PMC
Altitude
76,000 to 85,000 m (250,000 to 280,000 ft)
Classification
Other
Precipitation
No

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Overview

General

Formation

Discovery and investigation

Description from satellites

Observation

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Map overview Semantic statistics

Noctilucent cloud

Nodes94
Edges93
Triples91
Avg. degree1.98
Density0.021277
Components1

How this topic connects Entity context

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Noctilucent cloud

Top relations

related to External links · 25
Noctilucent cloud → Archived, Article, Audio, BBC Article, Chile Archived, Day, Ice Experiment, July, Mission, News, News Article, NLC, Noctilucent, Noctilucent Clouds Over Sweden, Observers' HomepageSolar Occultation, Punta Arenas, Rocket, Russia, Samara, SOFIE
related to Discovery and investigation · 21
Noctilucent cloud → Berlin Observatory, Finally, Foerster, Germany, He, His, In, It, Jesse, Krakatoa, Malzev, Noctilucent, Otto Jesse, Otto Jesse's, Scientists, Stolze, Studies, Study, Systematic, These
related to Observation · 16
Noctilucent cloud → Although, August, February, Italy, May, Noctilucent, November, Paris, Southern, Spain, Sun, The, They, Those, Turkey, Utah
related to Description from satellites · 14
Noctilucent cloud → In, OGO-6, On, PMC's, Satellite, SME, Solar Mesospheric Explorer, The, They, This, Type, Type II, Type III, Type IV
related to Formation · 8
Noctilucent cloud → Aeronomy, Clouds, Data, Earth's, Ice, Mesosphere, Noctilucent, The
Abbreviation · 1
Noctilucent cloud → NLC/PMC
Altitude · 1
Noctilucent cloud → 76,000 to 85,000 m (250,000 to 280,000 ft)
Classification · 1
Noctilucent cloud → Other
Precipitation · 1
Noctilucent cloud → No

Important terminology Word statistics

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Important terminology

clouds noctilucent mesosphere observed satellite water atmosphere ice cloud polar although first vapour summer may type visible mesospheric latitudes rocket

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Noctilucent cloudAbbreviationNLC/PMC1.00infobox
Noctilucent cloudAltitude76,000 to 85,000 m (250,000 to 280,000 ft)1.00infobox
Noctilucent cloudClassificationOther1.00infobox
Noctilucent cloudPrecipitationNo1.00infobox
streaksinstance ofbut frequently show distinctive patterns0.80text
wave-like undulationsinstance ofbut frequently show distinctive patterns0.80text
and whirlsinstance ofbut frequently show distinctive patterns0.80text
Noctilucent cloudrelated to Description from satellitesPMC's0.60section
Noctilucent cloudrelated to Description from satellitesType0.60section
Noctilucent cloudrelated to Description from satellitesType II0.60section
Noctilucent cloudrelated to Description from satellitesThey0.60section
Noctilucent cloudrelated to Description from satellitesType III0.60section

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