Modeling the atmospheric dust cycle: 1. Design of a soil-derived dust emission scheme

  title={Modeling the atmospheric dust cycle: 1. Design of a soil-derived dust emission scheme},
  author={B. Marticorena and Gilles Bergametti},
  journal={Journal of Geophysical Research},
A soil-derived dust emission scheme has been designed to provide an explicit representation of the desert dust sources for the atmospheric transport models dealing with the simulation of the desert dust cycle. Two major factors characterizing the erodible surface are considered: (1) the size distribution of the erodible loose particles of the soil which controls the erosion threshold and the emission strength and (2) the surface roughness which imposes the efficient wind friction velocity… 

An improved dust emission model – Part 1: Model description and comparison against measurements

Abstract. Simulations of the dust cycle and its interactions with the changing Earth system are hindered by the empirical nature of dust emission parameterizations in weather and climate models. Here

A new dust cycle model with dynamic vegetation: LPJ-dust version 1.0

Abstract. This paper presents a new offline dust cycle model which uses the Lund-Potsdam-Jena dynamic global vegetation model (Sitch et al., 2003) to calculate time varying dust sources. Surface

The influence of simulated surface dust lofting and atmospheric loading on radiative forcing

Abstract. This high-resolution numerical modeling study investigates the potential range of impact of surface-lofted dust aerosols on the mean radiative fluxes and temperature changes associated with

Seasonal dynamics of threshold friction velocity and dust emission in Central Asia

  • X. XiI. Sokolik
  • Environmental Science
    Journal of geophysical research. Atmospheres : JGR
  • 2015
A mesoscale model study of the seasonal dust activity in the semiarid drylands of Central Asia, focusing on the effects of wind speed, soil moisture, surface roughness heterogeneity, and vegetation phenology on the threshold friction velocity (u*t) and dust emission during the dust season of 1 March to 31 October 2001.

Numerical simulation for a wind dust event in the US/Mexico border region

Soil-derived dust represents one of the major components of the natural atmospheric aerosols. Arid and semiarid areas with unpaved and non-vegetated land cover are particularly vulnerable to

Development of a New Wind-Blown-Dust Emission Module Using Comparative Assessment of Existing Dust Models

A new wind-blown dust emission module has been fabricated to be used in investigating the development and transport of Asian dust storms. A number of different dust emission models currently used

Dust Production Mechanisms

This chapter is concerned with dust production mechanisms, that is, the interactions between the wind and the surface that lead to the emission of fine soil particles. Mineral dust emissions mainly

Stochastic parameterization of dust emission and application to convective atmospheric conditions

Abstract. We develop a parameterization scheme of convective dust emission for regional and global atmospheric models. Convective dust emission occurs in the absence of saltation as large eddies

An improved dust emission model – Part 2: Evaluation in the Community Earth System Model, with implications for the use of dust source functions

Abstract. The complex nature of mineral dust aerosol emission makes it a difficult process to represent accurately in weather and climate models. Indeed, results in the companion paper indicate that



Three-dimensional simulations of the atmospheric cycle of desert dust particles using a general circulation model

A modeling of the atmospheric cycle of desert dust particles has been introduced within an atmospheric general circulation model. This approach, which allows a modeling of the full cycle of dust

Soil flux measurements using a portable wind erosion tunnel

A portable wind erosion tunnel was used to measure the wind erodibility of a range of soil types under two treatments (bare uncultivated and bare cultivated) in south-west New South Wales. The

Submicron desert dusts: A sandblasting process

Mass size distributions of the major elements of the mineral aerosol of northern Sahara were obtained from measurements carried out with an inertial cascade impactor. A fitting procedure by data

Comments on the origin of dust in East Antarctica for present and ice age conditions

We have studied the distribution of 327 clay mineral particles retrieved from four Antaretic ice smaples corresponding to present and Last Glacial Maximum (LGM) climate conditions. Illite, chlorite,

Atmospheric transport of soil dust from Africa to South America

The arid and desert regions of North Africa are a prolific source of atmospheric dust. This dust is, for example, responsible for the ‘red snows’ reported in the Alps and Pyrenees1 and for dust falls

On the variability of desert aerosol radiative characteristics

Size distributions of desert aerosol observed in arid regions of Senegal, Mali, and Niger under different weather conditions are classified in terms of visibility ranges into three categories and

Effect of Saltation Bombardment on the Entrainment of Dust by Wind

Saltation is the wind-driven, hopping motion of sand-sized particles across an erodible surface. This mode of motion not only transports sand and similar materials in its own right but can also

Emission of Fine-Grained Particulates from Desert Soils

During the past decade, considerable interest has been focused on the emission, transport, deposition and climatological effects of natural and anthropogenic aerosols (e.g. Gillette, et al., 1982;

Field evaluation of relationships between a vegetation structural parameter and sheltering against wind erosion

Measurements of natural vegetation canopies and of threshold friction velocities for soil movement were made at three arid and semiarid field sites. Threshold friction velocities for the vegetated

Soil Transport by Winds on Mars

This paper presents three aspects of the movement of surface material by wind on Mars and assembles them to estimate transport rates. First, the governing equations of motion are presented and their