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Los Alamos's Earth and Environmental Sciences Division (EES) Participates in IAEA's Moisture Isotopes in the Biosphere and Atmosphere Program

1/4/05--EES-2's Ecohydrology team was invited to participate in the International Atomic Energy Association's Moisture Isotopes in the Biosphere and Atmosphere program (IAEA-MIBA). The MIBA program is focused on improving the quantification and understanding of the isotopic composition of water pools in the biosphere and atmosphere across the globe. Thirteen sites were chosen in North America to represent important biomes contributing to the continental isotopic budget of CO2 and water vapor. Data collected from each site will be used to constrain the regional, continental, and global carbon and water budgets. MIBA conducts laboratory analyses of water samples collected bi-monthly from each site and is funded to continue for at least five years. LANL's site is a pinon-juniper woodland located at TA-51. LANL was selected to participate in part because of its unique, real-time isotopic analysis of ecosystem carbon fluxes via EES-2's Tunable Diode Laser Absorption Spectroscopy Facility. Among the collaborative benefits to LANL will be the ability to partition ecosystem CO2 fluxes into above- and below-ground components on a daily basis for years; a capability never before achieved for periods longer than a few days.

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