Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Biogeosciences, 13, 4271-4277, 2016
http://www.biogeosciences.net/13/4271/2016/
doi:10.5194/bg-13-4271-2016
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Technical note
29 Jul 2016
Technical note: 3-hourly temporal downscaling of monthly global terrestrial biosphere model net ecosystem exchange
Joshua B. Fisher1, Munish Sikka1, Deborah N. Huntzinger2, Christopher Schwalm3, and Junjie Liu1 1Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
2School of Earth Sciences and Environmental Sustainability, Northern Arizona University, 527 S. Beaver St., Flagstaff, AZ 86011-5694, USA
3Woods Hole Research Center, Falmouth, MA 02540, USA
Abstract. The land surface provides a boundary condition to atmospheric forward and flux inversion models. These models require prior estimates of CO2 fluxes at relatively high temporal resolutions (e.g., 3-hourly) because of the high frequency of atmospheric mixing and wind heterogeneity. However, land surface model CO2 fluxes are often provided at monthly time steps, typically because the land surface modeling community focuses more on time steps associated with plant phenology (e.g., seasonal) than on sub-daily phenomena. Here, we describe a new dataset created from 15 global land surface models and 4 ensemble products in the Multi-scale Synthesis and Terrestrial Model Intercomparison Project (MsTMIP), temporally downscaled from monthly to 3-hourly output. We provide 3-hourly output for each individual model over 7 years (2004–2010), as well as an ensemble mean, a weighted ensemble mean, and the multi-model standard deviation. Output is provided in three different spatial resolutions for user preferences: 0.5°  ×  0.5°, 2.0°  ×  2.5°, and 4.0°  ×  5.0° (latitude  ×  longitude). These data are publicly available from doi:10.3334/ORNLDAAC/1315.

Citation: Fisher, J. B., Sikka, M., Huntzinger, D. N., Schwalm, C., and Liu, J.: Technical note: 3-hourly temporal downscaling of monthly global terrestrial biosphere model net ecosystem exchange, Biogeosciences, 13, 4271-4277, doi:10.5194/bg-13-4271-2016, 2016.
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Short summary
Atmospheric models of CO2 require estimates of land CO2 fluxes at relatively high temporal resolutions because of the high rate of atmospheric mixing and wind heterogeneity. However, land CO2 fluxes are often provided at monthly time steps. Here, we describe a new dataset created from 15 global land models and 4 combined products in the Multi-scale Synthesis and Terrestrial Model Intercomparison Project (MsTMIP), which we have converted from monthly to 3-hourly output.
Atmospheric models of CO2 require estimates of land CO2 fluxes at relatively high temporal...
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