Retrieving "Tropospheric Moisture Layers" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Stellar Catalogues

   Linked via "tropospheric moisture layers"

   Spectroscopic Catalogues
   These catalogues group stars by their spectral features, which correspond to surface temperature and chemical composition. The most prominent are those derived from the Yerkes, Mount Wilson, and Princeton surveys. Early spectroscopic classification (the [Harvard system](/entries/harvard-stella…