ALTOSTRATUS
change note: 2013-03-20 17:02:02.0 [mpmorahan] insert Definition (id: null text: A principal cloud type, forming in the middle levels of the troposphere, and appearing as a grey or bluish sheet. In aviation forecasts and reports it is coded as AS. language code: en);
change note: 2013-02-14 08:47:07.0 [mpmorahan] Insert Concept add broader relation (ALTOSTRATUS [f58d0203-0070-422c-ab52-6ca8ffbb6362,82187] - TROPOSPHERIC/MID-LEVEL CLOUDS (OBSERVED/ANALYZED) [a413f88b-859c-4035-a45b-2faa9934156b,82125]);
change note: 2013-02-14 08:49:46.0 [mpmorahan] Insert Concept add narrower relation (ALTOSTRATUS [f58d0203-0070-422c-ab52-6ca8ffbb6362,82187] - ALTOSTRATUS UNDULATUS [4da38a31-aac6-4080-96b0-c8ee2cb33158,82189]);
in scheme: sciencekeywords
type: Concept
definition: A principal cloud type, forming in the middle levels of the troposphere, and appearing as a grey or bluish sheet. In aviation forecasts and reports it is coded as AS.

ALTOSTRATUS UNDULATUS
type: Concept

TROPOSPHERIC/MID-LEVEL CLOUDS (OBSERVED/ANALYZED)
type: Concept