Sentences with phrase «biogeochemical models»

To address these gaps, researchers have begun to integrate satellite - derived data with coupled physical - biogeochemical models, using a method that obtains more realistic estimates by constraining the output to fit the observations.

However, global model projections have coarse resolution, with grid cell sizes of 200 × 200 km or more, reflecting limitations of the ocean GCM component of global coupled climate and ocean circulation — biogeochemical models.

These top - down estimates of changes in wetland and fire emissions are in good agreement with independent estimates based on remote sensing information and biogeochemical models.

Modelling interactions between terrestrial and atmospheric systems requires coupling successional models to biogeochemical models and physiological models that describe the exchange of water and energy between vegetation and the atmosphere at fine time - scales.

2018 Plenary Sessions: Phytoplankton physiological engines of biogeochemical models (Chairs: Andrew Barton, SIO; Philip Boyd, UTas; Scott Doney, UVA; Charles Stock, NOAA) Polar -LSB-...]

By comparison, other biogeochemical models divide the entire ocean into a two - dimensional grid of no more than five regions.

The project also aimes at improving the biogeochemical models of the Baltic Sea ecosystem.

The authors found that existing biogeochemical models that do not reproduce this hypothesized fragmentation behavior were unable to simulate the observations.

The lab results are now being integrated into biogeochemical models, which calculate the productivity of the ocean of the future and the limits of carbon storage.

To explain this, Cai built a biogeochemical model to simulate the way oxygen is consumed and inorganic carbon and acids are produced to match the observations measured in the Chesapeake Bay.

Felzer, B., et al., 2005: Global and future implications of ozone on net primary production and carbon sequestration using a biogeochemical model.

For example, a biogeochemical model can be used to show that dumping iron in the oceans will have no effect on atmospheric CO2, as any increase in algal growth will be accompanied by increases in remineralization of algal biomass in the water column.

In the first comprehensive biogeochemical model of this «Canfield Ocean,» Johnston et al. (2) in a recent issue of PNAS present a stunningly different take on those early photosynthesizers — one in which the upper, light - containing layers indeed drove biological production but without the expected concomitant release of oxygen.

We incorporated GFDL's state of the art ocean biogeochemical model into two models of starkly differing ocean physical configuration and built a new terrestrial ecology model.

Based on experiments in infested areas of Georgia and subsequent biogeochemical modeling, Hickman's team found that the end result of these microbial communities springing up is an average 127 % increase in soil nitric oxide (NO) emissions in invaded areas.

Not exact matches

This work should eventually enable a regional modelling platform to be set up integrating the oceanic, biogeochemical and atmospheric components of the Peru - Chile upwelling.

The new ACME land model includes a fully - coupled reactive transport scheme for these biogeochemical processes.

Now, researchers who study the Earth's climate system have extended the state - of - the - art Earth system models for physical and biogeochemical oceanic processes, projecting conditions through 2300.

This session examined the biogeochemical processes that are likely to affect the evolution of the Earth system over the coming decades, with a focus on the dynamics of marine and terrestrial ecosystems and the development of improved understanding through (a) fieldwork and laboratory experiments, (b) development of new observational datasets, both modern and palaeo, and (c) simulations using numerical models.

This suggests that existing models probably overestimate the amount of POC that is stored long term in the deep ocean, and the authors suggest that improved biogeochemical representations are needed in these models.

Now her interests encompass geoengineering, climate mitigation and model intercomparisons, with a focus on understanding the ever - complex interactions among biophysical and biogeochemical feedbacks.

Research & teaching: chemistry, physics and biology of aerosols and clouds; biogeochemical cycling of gases and particles; field measurements, kinetic and thermodynamic experiments and models.

The numerical model used in this study calculated sulfate reduction, methane production, and a broad array of other biogeochemical cycles in the ocean for the billion years between 1.8 billion and 800 million years ago.

Biogeochemical cycles, photosynthesis, biological oceanography, molecular biology, biochemistry and biophysics, physiological adaptation, plant physiology, evolution, mathematical modeling, symbiosis.

Newly developed assessment tools will also be used to improve parameterisations of calcium carbonate production in global biogeochemical climate models (5.2).

Burrows is a climate modeler whose research explores chemical modeling of marine biogeochemical influence on submicron sea spray particles.

DOE's Accelerated Climate Modeling for Energy (ACME) project is focused on how global water cycles, water resources, biogeochemical cycles, and rapidly changing ice or snow interact with climate systems and climate change.

Marine planktonic ecosystem dynamics, biogeochemical cycling and ocean - atmosphere - land carbon system, ocean acidification, climate change and ocean circulation, satellite ocean color, air - sea gas exchange, numerical modeling, data analysis, and data assimilation

Studies of the link between orbital parameters and past climate changes include spectral analysis of palaeoclimatic records and the identification of orbital periodicities; precise dating of specific climatic transitions; and modelling of the climate response to orbital forcing, which highlights the role of climatic and biogeochemical feedbacks.

Marchal, O., T.F. Stocker, and F. Joos, 1998: A latitude - depth, circulation - biogeochemical ocean model for paleoclimate studies.

Theme 3 is improving biogeochemical, sediment, and coupled ocean - climate models to better account for how ocean acidification will affect ocean biogeochemistry and ecosystems.

The biogeochemical impacts of this «fertilization» remain unclear, as direct oceanic observations of atmospheric deposition are limited and models often can not resolve the important processes.

Simple biogeochemical flux modeling suggests that, if the Archean Earth was kept warm by a methane greenhouse, then the evolution of oxygenic photosynthesis could have triggered a Snowball Earth event on a time scale as short as about a million years (Kopp et al., 2005).

Here, we unite 30 consecutive years of watershed modeling, biogeochemical data, and comprehensive aerial surveys of Chesapeake Bay, United States to quantify the cascading effects of anthropogenic impacts on submersed aquatic vegetation (SAV), an ecologically and economically valuable habitat.

Permafrost modeling studies typically indicate a potential release of in the neighborhood ~ 200 PgC as carbon dioxide equivalent by 2100, though poorly constrained, but comparable to other biogeochemical and climate - ecosystem related feedbacks, such as the additional CO2 released by the warming of terrestrial soils.

Summary for Policymakers Chapter 1: Introduction Chapter 2: Observations: Atmosphere and Surface Chapter 3: Observations: Ocean Chapter 4: Observations: Cryosphere Chapter 5: Information from Paleoclimate Archives Chapter 6: Carbon and Other Biogeochemical Cycles Chapter 7: Clouds and Aerosols Chapter 8: Anthropogenic and Natural Radiative Forcing Chapter 8 Supplement Chapter 9: Evaluation of Climate Models Chapter 10: Detection and Attribution of Climate Change: from Global to Regional Chapter 11: Near - term Climate Change: Projections and Predictability Chapter 12: Long - term Climate Change: Projections, Commitments and Irreversibility Chapter 13: Sea Level Change Chapter 14: Climate Phenomena and their Relevance for Future Regional Climate Change Chapter 14 Supplement Technical Summary

Even so, revealing and unexpected teleconnections are being discovered; moreover, progress is being made towards model structures and data sets that will allow implementation of coupled atmosphere - ocean - terrestrial models that include key biological - biogeochemical feedbacks.

The challenges are significant, but the record of progress suggests that within the next decade the scientific community will develop fully coupled dynamical (prognostic) models of the full Earth system (e.g., the coupled physical climate, biogeochemical, human sub-systems) that can be employed on multi-decadal time - scales and at spatial scales relevant to strategic impact assessment.

Global Carbon Cycle Recent efforts have begun to extend Global Climate Models (GCMs) towards Earth System Models (ESMs), where the physical - dynamical GCM also includes key biogeochemical cycles important in determining the Earth's response to increasing Greenhouse Gas (GHG) emissions.

This WP aims to improve the resolution of ocean models, as well as the representation of physical and biogeochemical processes, in key regions of the world's oceans (particularly tropical coastal regions, the Southern Ocean and high Northern latitudes) to reduce well known biases in ESMs.

My studies included graduate level courses in global biogeochemical cycles as well as the science behind, limitations of, and theories supporting the early global climate models (GCMs).

Global models incorporating land use, such as Integrated Assessment Models and Earth System Models, are improving their accounting of the complex biogeophysical and biogeochemical effects of heterogeneous land management practices within broad land use classes (Erb et al models incorporating land use, such as Integrated Assessment Models and Earth System Models, are improving their accounting of the complex biogeophysical and biogeochemical effects of heterogeneous land management practices within broad land use classes (Erb et al Models and Earth System Models, are improving their accounting of the complex biogeophysical and biogeochemical effects of heterogeneous land management practices within broad land use classes (Erb et al Models, are improving their accounting of the complex biogeophysical and biogeochemical effects of heterogeneous land management practices within broad land use classes (Erb et al 2016).

Many CMs now include dynamic land models to estimate both biophysical and biogeochemical feedbacks between land surface changes and climate.

The response of atmospheric CO2 and climate to the reconstructed variability in solar irradiance and radiative forcing by volcanoes over the last millennium is examined by applying a coupled physical — biogeochemical climate model that includes the Lund - Potsdam - Jena dynamic global vegetation model (LPJ - DGVM) and a simplified analogue of a coupled atmosphere — ocean general circulation model.

The US CLIVAR PSMI Panel seeks new panelists with prior expertise in field / process studies or model development in one or more of the following areas: (a) clouds, (b) high - frequency ocean - atmosphere interaction (diurnal to sub-seasonal), (c) coastal ocean processes, (d) high - latitude processes (i.e., Arctic, Antarctic, ocean - ice interactions), or (e) ocean biogeochemical cycles / ecosystem interactions.

The successful candidate will use numerical models developed at NASA Goddard Institute for Space Studies and help improve parameterizations pertaining to physical and / or biogeochemical processes.

As understanding of the role of the biogeochemical cycles in the climate system improves, they should be explicitly represented in climate models.

Modeled regional and global climate responses to simulated (107, 110, 111) and reconstructed historical land cover changes over the past century (112) and millennium (113) generally agree that anthropogenic deforestation drives biogeophysical cooling at higher latitudes and warming in low latitudes and suggest that biogeochemical impacts tend to exceed biogeophysical effects (113).

This research is unique in utilizing GFDL's highly successful CM2.1 climate model as a carbon model backbone, in incorporating GFDL's state of the art ocean biogeochemical and terrestrial ecology models, and in comparing two models of starkly differing ocean physical configuration in the same configuration elsewhere.

«AOS models are widely used for weather, general circulation, and climate, as well as for many more isolated or idealized phenomena: flow instabilities, vortices, internal gravity waves, clouds, turbulence, and biogeochemical and other material processes.