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Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

Pearl clouds - 5.12.2022 at 15.18 - 5.12.2022 at 16.21 Mäntyharju Observation number 110928

Visibility I / V


Pearly brown clouds appeared as the normal clouds moved to the side. All photos after sunset.



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Additional information
  • Havainto
    • Pearl clouds
  • Cloud coverage in the sky
    • Very small area
  • Nacreous clouds
    • Pearlescent sunset info

      Pearlescent brown is a brownish sunset associated with pearl clouds that appears at dusk in the morning and evening when the Sun is below the horizon.

      It is usually remarkably powerful and makes the landscape bathe in red or purple light. Most often, some degree of pearlescent is observed in the context of pearl clouds. Pearl brown can also be the dominant element in which the actual pearl clouds stand out poorly if at all.

      The pearl clouds themselves are reported in the Sky Watch in the categories of colorless light (type I) and spectral color (type II) clouds.

      Parel clouds are often also associated with the Bishop ring. The Bishop’s ring may be a clear sign of pearls when the Sun is on the horizon. In addition, pearlescent cloud fibers are visible, which, however, are often very inconspicuous when the Sun is on the horizon.

      The Pearl Bishop gradually turns into a pearl brown in the evening as the sun continues to sink below the horizon. In the morning the opposite. However, the Bishop ring is not always visible, even if pearl clouds are observed in the morning or evening. In this case, the pearlescent brown would also appear to be weak or non-existent.

      Sunset colors with pearl clouds Eetu Saarti.

      Close up of mother of pearl brown. It also shows type I pale pearl clouds. Photo by Mika Aho.

      Pearlescent sunset by Veikko Mäkelä. 

Comments: 1 pcs
Tarja Hämäläinen - 9.12.2022 at 21.18 Report this

Upeat kuvat olet auringonlaskusta ottanut

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