The preferential dust source (PDS) scheme enables large-scale mapping of geomorphology in terms of importance for dust emissions but has not been independently tested other than at local scales. We examine the PDS qualitative conceptual model of surface emissivity alongside a quantitative measurement of dust loading from Moderate Resolution Imaging Spectroradiometer (MODIS) Deep Blue Collection 6 for the Chihuahuan Desert. The predicted ranked importance of each geomorphic type for dust emissions is compared with the actual ranked importance as determined from the satellite-derived dust loading. For this region, the predicted variability and magnitude of dust emissions from most surface types present coincides with the observed characteristics demonstrating the significance of geomorphological controls on emission. The exception is for areas of low magnitude but persistent emissions such as alluvial surfaces where PDS overpredicts dustiness. As PDS is a good predictor of emissions and incorporates surface dynamics it could improve models of future dust emissions.
2020 | Journal of Climate, 33(17), 7275-7287, 2020
Description:
Monsoon low pressure systems (MLPSs) are among the most important synoptic-scale disturbances of the South Asian summer monsoon. Potential changes in ...
2019 | Bulletin of the American Meteorological Society, 100(12), 2589-2606, 2019
Description:
This article introduces the Extratropical–Tropical Interaction Model Intercomparison Project (ETIN-MIP), where a set of fully coupled model experime...
2016 | J. Geophys. Res. Earth Surf., 121, 497– 510
Description:
Satellite laser altimetry reveals short timescale changes in Antarctic ice sheet surface elevation that are suggested to be driven by subglacial water...
Icebergs calved from the Antarctic continent act as moving sources of freshwater while drifting in the Southern Ocean. The lifespan of these icebergs ...
2019 | Journal of Climate, 32(20), 7017-7035, 2019
Description:
Dynamical prediction systems have shown potential to meet the emerging need for seasonal forecasts of regional Arctic sea ice. Observationally constra...
Extracting multiple-scale observational information is critical for accurately reconstructing the structure of mesoscale circulation systems such as t...
Arid extratropical Asia (AEA) is bisected at the wetter Tian Shan (a northern offshoot of the Tibetan Plateau) into east and west deserts, each with u...
Uncertainty in equilibrium climate sensitivity impedes accurate climate projections. While the intermodel spread is known to arise primarily from diff...
2019 | Bulletin of the American Meteorological Society, 100(12), 2551-2570, 2019
Description:
We present a model intercomparison project, LongRunMIP, the first collection of millennial-length (1,000+ years) simulations of complex coupled climat...
High-latitude phytoplankton blooms support productive fisheries and play an important role in oceanic uptake of atmospheric carbon dioxide. In the sub...
We examine how soil moisture variability and trends affect the simulation of temperature and precipitation extremes in six global climate models using...
Sea surface cooling along tropical cyclone (TC) tracks has been well observed, but a complete understanding of the full three-dimensional structure of...
2020 | Journal of Advances in Modeling Earth Systems, 12, e2019MS002026.
Description:
The imprint of anthropogenic activities on the marine nitrogen (N) cycle remains challenging to represent in global models, in part because of uncerta...
Recently, there has been considerable interest in examining how sea-level extremes due to storm surge may be related to climate change. Evidence of ho...
2021 | Bulletin of the American Meteorological Society, 102(1), S1-S7.
Description:
July 2019 saw record-breaking wildfires burning 3,600 km2 in Alaska. The GFDL Earth system model indicates a threefold increased risk of Alaska’s ex...
Potential and real predictive skill of the frequency of extreme rainfall in southeastern South America for the December–February season are evaluate...
2016 | Geophysical Research Letters, 43(22), 11,823-11,830
Description:
Observations show that Australian dust activity varies by a factor of 4 on decadal timescales. General circulation models, however, typically fail to ...
One of the challenges in studying desert dust aerosol along with its numerous interactions and impacts is the paucity of direct in situ measurements, ...
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