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Background
and justification
The
International Atomic Energy Agency (IAEA) has long operated the
Global Network of Isotopes in Precipitation (GNIP), which has provided
global data to understand and simulate the water cycle under present
and past climates. Recently, the IAEA initiated efforts to improve
the availability of isotope data for other water cycle components
in an effort to supplement GNIP data and integrate isotope applications
in hydrological cycle, carbon cycle and climate research. To this
end, the IAEA Moisture Isotopes in the Biosphere and Atmosphere
(IAEA-MIBA) group was constituted and includes a group of scientists
with diverse research interests ranging from the ecosystem to global
scales. read
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Initial
meetings and protocol development
The
initial consultant's meetings of November, 2003 and May, 2004 resulted
in the development of the basic network design and sampling concepts.
It was decided that for this network that regular sampling of the
isotopic composition of water in plant leaves, stems, soil and atmospheric
vapour would help achieve the benefits to the research community.
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Current
state of the network
On
June 1, 2004, the recruitment of both regional representatives and
sampling sites commenced with the goal for sampling program commencement
period of April/May, 2005. The regional representatives and representatives
from the central analysis labs met in Vienna on May 2-4, 2005 to
discuss the results of the recruitment effort, analysis capacity
and sampling protocols in an effort to assess the current state
of the network and to decide on the future directions of the networks.
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