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Current Projects
BORNET-Eurasia (Eurasian Boreal Network for land-atmosphere-climate
interactions)
The BORNET-Eurasia project aims to build capacity for a new joint research
programme between European and Russian scientists, focussed on probing natural
and man-made influences on short-lived climate pollutants over the Eurasian
Arctic and boreal forest. As part of the project, we will collate avalable
data from this remote region to evaluate existing multi-model experiments.
this remote The project is being undertaken in close
collaboration with scientists involved in the Pan-Eurasian Experiment (PEEX)
programme.
Funding: NERC. Arnold PI.
Export of Ozone and Precursors from Europe and Impacts on Air Quality, Climate and
Ecosystems (EurEX)
EurEX is examining dynamical and chemical controls on the export of
tropospheric ozone and its precursors from Europe eastwards over Eurasia and
to the Arctic and feedbacks to climate. In addition, we are examining the role of the Eurasian boreal
forest as a sink for ozone through dry deposition, and assessing the impact of
ozone deposition from European and Asian sources on photosynthesis and
productivity of Eurasian vegetation.
Funding: NERC. Arnold PI.
Oceanic reactive carbon: chemistry-climate impacts (ORC3)
The ORC3 project aims to better understand oceanic emissions of reactive organic
compounds, how they modify oxidative capacity and aerosol in the marine
atmosphere, and the implications for the natural climate system. The project
is in collaboration with Dwayne Heard in the School of Chemistry and with the
University of York. The project involves both modelling and field work. Two
4-week field campaigns will take place at the NCAS Cape
Verde observatory in early and late summer 2014.
Find out about the latest ORC3 developments and updates from the
field campaigns at: orc3capeverde.wordpress.com.
Funding: NERC. Arnold PI.
POLMIP - POLARCAT Model Intercomparison Project
POLMIP is evaluating the skill of 10 global and regional chemical transport
models at simulating tropospheric ozone and precursors in the Arctic. This
evluation goes beyond previous efforts by utilising an extensive set of
in-situ aircraft observations of ozone, NOy and VOCs over the depth of the
troposphere in spring and summer 2008. The project is jointly led by Steve
Arnold at Leeds and Louisa Emmons
at NCAR, USA.
Developing a framework to test the sensitivity of atmospheric composition
simulated by ESMs to changing climate and emissions This project will
develop observation-based metrics for evaluation on atmospheric composition
simulated by Earth system models. In particular, we will focus on the ability
of models to simulate variability in aerosols and ozone on daily to
inter-annual timescales, and emission-driven trends over recent decades. The
project is a collaboration between the University of Leeds, the University of
York and the Met Office. Funding: NERC. Arnold co-I.
The Amazon hydrological cycle: past, present and future
This project is using novel measurements of oxygen isotopes in tree rings
from across the Amazon basin to deduce changes in the water cycle over the
past century. The project is led by Prof. Manuel Gloor in the School of
Geography, and will involve integrating these observations with simulations of
isotopic fractionation, and its dependencies on precipitation, water cycling
/ evapotranspiration,
and moisture transport. Our group
are involved in the modelling aspects of the project, including using our
expertise in Lagrangian modelling to investigate changes in atmospheric
transport and water cycling in the Amazon region over recent decades.
Funding: NERC. Arnold co-I.
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