Maintenance of Lower Tropospheric Temperature Inversion in the Saharan Air Layer by Dust and Dry Anomaly

@article{Wong2009MaintenanceOL,
  title={Maintenance of Lower Tropospheric Temperature Inversion in the Saharan Air Layer by Dust and Dry Anomaly},
  author={Sun Wong and Andrew E. Dessler and Natalie M. Mahowald and Ping Yang and Q. Feng},
  journal={Journal of Climate},
  year={2009},
  volume={22},
  pages={5149-5162}
}
The role of Saharan dust and dry anomalyin maintaining the temperature inversion in the Saharan air layer (SAL) is investigated. The dust aerosol optical thickness (AOT) in the SAL is inferred from the measurements taken by Aqua Moderate Resolution Imaging Spectroradiometer (MODIS), and the corresponding temperature and specific humidity anomalies are identified using the National Centers for Environmental Prediction (NCEP) data in August‐September over the North Atlantic tropical cyclone (TC… 

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    Journal of Geophysical Research: Atmospheres
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References

SHOWING 1-10 OF 59 REFERENCES

Radiative Heating Rates for Saharan Dust

Abstract A combined longwave and shortwave radiative transfer model was used to determine effects of Saharan dust on the radiative fluxes and heating/cooling rates in the atmosphere. Cases are

Long‐term variability in Saharan dust transport and its link to North Atlantic sea surface temperature

An understanding of the atmospheric distribution of Saharan dust is crucial for understanding many Earth‐system processes. We demonstrate here a model simulation indicating that the August‐September

Principal component analysis of the evolution of the Saharan air layer and dust transport: Comparisons between a model simulation and MODIS and AIRS retrievals

[1] The onset and evolution of Saharan air layer (SAL) episodes during June–September 2002 are diagnosed by applying principal component analysis to the NCEP reanalysis temperature anomalies at 850

Dust transport and deposition observed from the Terra‐Moderate Resolution Imaging Spectroradiometer (MODIS) spacecraft over the Atlantic Ocean

[1] Meteorological observations, in situ data, and satellite images of dust episodes were used already in the 1970s to estimate that 100 Tg of dust are transported from Africa over the Atlantic Ocean

Impact of Desert Dust Radiative Forcing on Sahel Precipitation

The role of direct radiative forcing of desert dust aerosol in the change from wet to dry climate observed in the African Sahel region in the last half of the twentieth century is investigated using

The Impact of the Saharan Air Layer on Atlantic Tropical Cyclone Activity

A deep well-mixed, dry adiabatic layer forms over the Sahara Desert and Shale regions of North Africa during the late spring, summer, and early fall. As this air mass advances westward and emerges

Vertical and areal distribution of Saharan dust over the western equatorial north Atlantic Ocean

Aerosol measurements were made as a part of the Barbados Oceanographic and Meteorological Experiment (Bomex) during May, June, and July 1969. Maximum dust concentrations occurred between the

Dust plumes over the Pacific, Indian, and Atlantic oceans: Climatology and radiative impact

[1] Multiple satellite data sets in conjunction with the Monte Carlo Aerosol-CloudRadiation (MACR) model are employed to determine climatological distributions and radiative impacts of dust plumes

Radiative Forcing of Saharan Dust: GOCART Model Simulations Compared with ERBE Data

Abstract This study uses information on Saharan aerosol from a dust transport model to calculate radiative forcing values. The transport model is driven by assimilated meteorological fields from the

Suppression of deep convection over the tropical North Atlantic by the Saharan Air Layer

The effects of the dust‐laden Saharan Air Layer (SAL) on the occurrence of deep convection over the eastern and central tropical North Atlantic Ocean off‐shore of the African continent during
...