"Dust deposition" refers to the process of fine particles, like dust or dirt, settling down and accumulating on surfaces over time.
Full definition
They note that the peak years of African
dust deposition in the Caribbean match the years of major die - offs in the region's reefs.
The input of trace elements
by dust deposition is also of importance to terrestrial ecosystems.
This good fit encourages us to seek
dust deposition − temperature relationships by applying Eq.
A peat bog in Romania provides a new insight into our knowledge of when the Sahara began to transform from grassland into the desert we know today, and the impact this had
on dust deposition within Eastern Europe.
Here we show that the presence of these lakes is associated with low levels
of dust deposition in both West African and Mediterranean records, but is not associated with long - term global cooling and aridification of East Africa.
Special attention has been given to studying the effects of mineral
dust deposition which is believed to promote N2 fixation as it increases the availability of both Fe and P. Three laboratory bioassays (+ Fe, + P, + Dust) via incubation experiments were performed on Trichodesmium IMS101, an important contributor to marine N2 fixation.
The objective of our research is to evaluate the effects of global climate change processes (
changing dust deposition, ocean acidification and sea - surface warming) on phytoplankton growth, biological N2 fixation, biogeochemical cycles, and the controlling role of Fe within these impacts.
Glaser et al. show that
dust deposition mediated by frequent tropical storms was an important source of nutrients for the Everglades until about 2800 years ago, when a climatic shift in the tropical Atlantic and Gulf of Mexico led to weather patterns that sharply decreased the level of dust inputs and led to a drier climate and a gradual loss of soil phosphorus, carbon, and nitrogen.
The determination of the vertical profile of water in the atmospheres of the outer planets and Titan is a diagnostic of its origin (e.g. cometary impact vs.
permanent dust deposition), but also of the rate at which water is transported within and removed from the atmosphere (Hartogh et al. 2009).
These processes
included dust deposition, and ocean acidification and warming, which were shown to have a significant impact on oceanic phytoplankton growth, cell size and primary productivity, biological N2 fixation, phytoplankton distribution and community composition.
The present study clearly highlights the effect of ocean acidification on enhancing the release of Fe
upon dust deposition.
Persistent organic pollutant emission
via dust deposition throughout Pakistan: Spatial patterns, regional cycling and their implication for human health risks
Over the past 3 Myrs, East African hominin species diversity and dispersal events are predicted by both lake presence and
Mediterranean dust deposition (Table 2 and Figure S1 in File S1).
In a separate talk today, glaciologist Lonnie Thompson showed a new ice core data * from Huascarán in Peru, the highest tropical mountain, with a huge spike in
dust deposition around this time.
For example, it has been proposed that the vegetation of the Amazon basin is highly dependent on
Saharan dust deposition, which provides phosphorus, necessary for maintenance of long - term productivity (Okin et al., 2004; Section 7.3).
In a recent DCESS model application (25), IF needed to be increased to 0.50 to emulate the initial LGM pCO2 drawdown in a complex ocean biogeochemical model forced by observed
LGM dust deposition.
Both dramatic warming events were preceded by decreasing
Greenland dust deposition, indicating higher tropical temperatures and significantly more rain falling on the deserts of Asia at the time, said White.
Subsequently, the underlying trend towards increasing brain size in Homo is most strongly correlated with both decreases in lake presence and high levels of
dust deposition in the Mediterranean ODP967 record (Table 3), indicating drier conditions in East Africa [43].
A secondary, but I suspect important longterm issue could be the effect
of dust deposition on ocean chemistry and biology, and probably upon the ability of the ocean to sequester CO2.
Schultz says the streaks could prove useful in establishing rates of erosion and
dust deposition in areas where the streaks are found.
A major source of bioavailable iron in Antarctica is from melting snow and
dust deposition.
«
Dust deposition, snow algae, wind and turbulence could bring further reductions,» he said.
But changes in
dust deposition are not the primary culprit.