Phase-locking of the Boreal Summer Atmospheric Response to Dry Land Surface Anomalies in the Northern Hemisphere

Wang, Hailan; Schubert, Siegfried D.; Koster, Randal D.; Chang, Yehui

doi:10.1175/JCLI-D-18-0240.1

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Phase-locking of the Boreal Summer Atmospheric Response to Dry Land Surface Anomalies in the Northern Hemisphere

2019
By Wang, Hailan ; Schubert, Siegfried D. ; Koster, Randal D. ; ...
Source: Journal of Climate, 32(4), 1081-1099

[PDF-3.50 MB]

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Journal Title:

Journal of Climate
Personal Author:

Wang, Hailan ; Schubert, Siegfried D. ; Koster, Randal D. ; Chang, Yehui

Wang, Hailan ; Schubert, Siegfried D. ; Koster, Randal D. ; Chang, Yehui Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office)

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) Less -
Description:

Past modeling simulations, supported by observational composites, indicate that during boreal summer, dry soil moisture anomalies in very different locations within the U.S. continental interior tend to induce the same upper-tropospheric circulation pattern: a high anomaly forms over west-central North America and a low anomaly forms to the east. The present study investigates the causes of this apparent phase locking of the upper-level circulation response and extends the investigation to other land regions in the Northern Hemisphere. The phase locking over North America is found to be induced by zonal asymmetries in the local basic state originating from North American orography.
Keywords:

[+]

Atmosphere-land Interaction Drought Rossby Waves Stationary Waves Summer/Warm Season Topographic Effects
Source:

Journal of Climate, 32(4), 1081-1099
DOI:

https://doi.org/10.1175/JCLI-D-18-0240.1
Document Type:

Journal Article
Funding:

Grant no. NA14OAR4310221
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Submitted
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urn:sha256:463678c72f96cfb5f7a5f9b68d094b72efb81f1455c7177a7f009d1030dd9b1e
Download URL:

https://repository.library.noaa.gov/view/noaa/36798/noaa_36798_DS1.pdf
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Phase-locking of the Boreal Summer Atmospheric Response to Dry Land Surface Anomalies in the Northern Hemisphere

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