DUST CYCLE A CHAIN OF PROCESSES FROM SOURCE EMISSIONS TO ATMOSPHERIC TRANSPORT AND TRANSFORMATION AND TO DEPOSITION INTO LAND AND OCEAN HAS EMERGED AS A CORE THEME OF THE EARTH SYSTEM SCIENCE BY VIRTUE OF ITS STRONG COUPLING WITH THE SYSTEM S ENERGY WATER AND CARBON CYCLES. WIND-BLOW DUST IS ONE OF THE MOST ABUNDANT AEROSOLS. IT AFFECTS EARTH ENVIRONMENTS IN SEVERAL WAYS INCLUDING DEGRADING AIR QUALITY PERTURBING ATMOSPHERIC RADIATION TRANSFER AND BALANCE IN WIDE SPECTRAL RANGE TRANSFERRING IMPORTANT NUTRIENTS AMONG DIFFERENT OCEANIC AND TERRESTRIAL ECOSYSTEMS ETC.