The following pages and posts are tagged with
| Title | Type | Excerpt |
|---|---|---|
| GDL Significant Levels | Page | Description Algorithm for calculating additional levels between mandatory significant levels, so that the thermodynamic or winds profile can be reproduced from the minimum number of points. Levels are identified at points of greatest departure from linearity (GDL) throughout the sounding, recursively. Aspen includes user-settable thresholds for GDL... |
| Levels Calculation Overview | Page | Calculation Standard and significant levels for encoding in BUFR and TEMP messages are calculated in this order: Surface thermodynamic and winds Missing temperature Highest thermodynamic 110mb thermodynamic Inversions Station base pressure 110mb winds Highest wind Extrapolated altitudes for mandatory levels not covered by sounding GDL thermodynamic... |
| Tropopause | Page | Description Formula Source |
| WL150 | Page | Calculate the mean wind in the lowest 150m layer of a dropsonde sounding. |
| Geopotential height encoding | Page | Description Geopotential height for standard levels is encoded in only 3 digits in TEMP messages. To enable this, height is recorded in decameters above the 700 hPa level and the thousands digit is left off, as it can be determined from the standard atmosphere. Formula ... |