Data · dataset · 2026
QBO modulation of traveling planetary waves during northern winter
Listed in National Center for Atmospheric Research
This study analyzes geopotential height data from the ERA-40 and ERA-Interim reanalyses for the period of 1958-2009 to provide some new insights on the stratospheric Quasi-Biennial Oscillation (QBO) modulation of traveling planetary waves during Northern Hemisphere (NH) winter.
Description
In the stratosphere, the zonal wave number 1-3 waves with periods of 22.5-30 days and 45-60 days are found to be significantly stronger at midlatitudes when the QBO at 50 hPa is in its westerly phase than when it is in its easterly phase.
The modulation is stronger for eastward propagating and standing waves and weaker for westward propagating waves. A QBO modulation of 11-13 day planetary waves is also found but the effect is dominated by post-satellite data. In the troposphere, significant QBO modulation is only detected in westward propagating waves at zonal wave number 2 with periods of 22.5-30 days in early winter (Oct-Dec).
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Consistent results in the stratosphere are obtained using the temperature data from SABER/TIMED. The SABER data also show that the QBO effect on the eastward propagating 23-day waves extends into the mesosphere (â¼70 km) for wave number 1 and only up to the stratopause (â¼45 km) for wave numbers 2 and 3. We suggest that the 22.5-30 day planetary waves are secondary waves generated by a nonlinear coupling between zonal-mean intraseasonal oscillations (ISO) and the well-known 16-day planetary waves.
The QBO modulation of those planetary waves is due to a QBO-ISO interaction. Further studies are needed to prove this hypothesis.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d7r78fwf ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/qbo-modulation-of-traveling-planetary-waves-during-nor… ↗
National Center for Atmospheric Research dataset page
landing page · from data ucar edu
Catalogue records · 1
- CKAN API data.ucar.edu/api/3/action/package_show?id=c10a9f93-d177-4ab0-b02a-61b7ceb0c… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | c10a9f93-d177-4ab0-b02a-61b7ceb0c4bf | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| created_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| description | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /notes |
| publication_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| title | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /title |
| updated_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 |