TRIGONAL ICE CRYSTALS IN EARTH'S ATMOSPHERE

Murray, Benjamin J.; Salzmann, Christoph G.; Heymsfield, Andrew J.; Dobbie, Steven; Neely, Ryan R.; Cox, Christopher J.

doi:10.1175/bams-d-13-00128.1

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

i

TRIGONAL ICE CRYSTALS IN EARTH'S ATMOSPHERE

2015
By Murray, Benjamin J. ; Salzmann, Christoph G. ; Heymsfield, Andrew J. ; ...
Source: Bulletin of the American Meteorological Society, 96(9), 14.

[PDF-3.64 MB]

Details Related Documents You May Also Like

Details:

Journal Title:

Bulletin of the American Meteorological Society
Personal Author:

Murray, Benjamin J. ; Salzmann, Christoph G. ; Heymsfield, Andrew J. ; Dobbie, Steven ; Neely, Ryan R. ; ... More +

Murray, Benjamin J. ; Salzmann, Christoph G. ; Heymsfield, Andrew J. ; Dobbie, Steven ; Neely, Ryan R. ; Cox, Christopher J. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory)

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) Less -
Description:

We are all familiar with the hexagonal shape of snow and ice crystals, and it is well established that their sixfold symmetry is derived from the arrangement of water molecules in a hexagonal crystal structure. However, atmospheric ice crystals with only threefold rotational symmetry are often observed, which is inconsistent with the hexagonal crystal structure of ordinary ice. These crystals are found in a wide range of different cloud types ranging from upper-tropospheric cirrus to contrails and diamond dust and they form at temperatures ranging from about -84 degrees to -5 degrees C. Recent experimental studies of ice crystal structures have shown that ice under a wide range of atmospheric conditions does not always conform to the standard hexagonal crystal structure. Instead, sequences of the hexagonal structure can be interlaced with cubic sequences to create stacking-disordered ice. This degrades the symmetry of the crystal structure so that, instead of having a hexagonal structure, they have a trigonal structure with a corresponding threefold symmetry. Hence, this implies that atmospheric ice crystals with threefold symmetry are made of stacking-disordered ice. We conclude that the presence of trigonal crystals in the atmosphere is consistent with rare Parry arc halos and also show that they have distinct radiative properties compared with hexagonal ice.
Source:

Bulletin of the American Meteorological Society, 96(9), 14.
DOI:

https://doi.org/10.1175/bams-d-13-00128.1
Document Type:

Journal Article
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:85d705bd28e9cba47f29a2af4e3078ba85ac888b35152d5ea69204b23e48df46
Download URL:

https://repository.library.noaa.gov/view/noaa/22275/noaa_22275_DS1.pdf
File Type:

No Additional Files

More +

TRIGONAL ICE CRYSTALS IN EARTH'S ATMOSPHERE

Details:

Supporting Files

Related Documents

You May Also Like