Search Results

You are looking at 1 - 10 of 41 items for

  • Author or Editor: Herbert Riehl x
  • All content x
Clear All Modify Search
Herbert Riehl

Abstract

In an effort to find tools for the description of long waves in the upper troposphere in addition to those already available, the total field of motion aloft is divided into a nondivergent basic current and perturbations, following standard hydrodynamical methods of wave treatment. After this division the long waves appear in the form of closed perturbation centers so that latitude is added to longitude as a coordinate for defining long waves. Moreover, since the intensity of these centers is also given, the deepening and filling which they experience, as well as their displacements from day to day can be followed, much as in the case of highs and lows on the sea-level chart. Several other measurements that can be made with use of perturbation charts are also indicated.

Two examples of the suggested technique are given, and some synoptic consequences are also discussed.

Full access
Herbert Riehl

Abstract

No abstract available.

Full access
Herbert Riehl

Average values of moisture and stability for the lower troposphere are computed at three-hourly intervals. Comparison of the diurnal moisture and stability variation with the diurnal rainfall variation does not yield a satisfactory explanation of the latter. Cloud observations, however, suggest an explanation of the precipitation curve, based on the effect of topography on the field of vertical motion.

Full access
Herbert Riehl

Abstract

No Abstract Available.

Full access
Herbert Riehl

Abstract

Full access
Herbert Riehl

Three-hourly means of the cloudiness through the day are formed for the subtropical Atlantic during summer. The periodic variation is then studied in relation to the aperiodic changes and two theories are tested that suggest explanations for the periodic variation of the cloudiness.

Full access
Herbert Riehl
Full access
Herbert Riehl

Abstract

No Abstract Available

Full access
Herbert Riehl
Full access
Herbert Riehl

Abstract

No Abstract Available

Full access