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Update Research of the Remote Arctic to reflect that Huo et al., (202…
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of study.</p><p>DART_LAB is a set of instructional materials designed to teach new users the fundamentals of data | ||
assimilation. “As a user of DART, I like DART_LAB the most because it allows me to play around with | ||
different ‘knobs’ and better understand how and why each of them can remove biases in model | ||
simulations and makes the assimilation perform better,” said Huo.</p><p>In an article that is currently in review for publication in the Journal of Geophysical Research: | ||
Biogeosciences, Huo worked with a team that used DART to assimilate two data sources into CLM to | ||
assess the model’s fidelity in Alaska and Western Canada. The first data source she assimilated was | ||
Leaf Area Index (LAI), or the ratio of leaf area to ground surface area inferred from a remote | ||
sensing instrument, in this case the Moderate Resolution Imaging Spectroradiometer. The second data | ||
source she assimilated was a machine learning product that estimated aboveground biomass.</p><p>The experiment compared CLM’s estimates of Gross Primary Productivity (GPP) — how much carbon is | ||
simulations and makes the assimilation perform better,” said Huo.</p><p>In an article published in the Journal of Geophysical Research: Biogeosciences, Huo worked with a | ||
team that used DART to assimilate two data sources into CLM to assess the model’s fidelity in Alaska | ||
and Western Canada. The first data source she assimilated was Leaf Area Index (LAI), or the ratio of | ||
leaf area to ground surface area inferred from a remote sensing instrument, in this case the | ||
Moderate Resolution Imaging Spectroradiometer. The second data source she assimilated was a machine | ||
learning product that estimated aboveground biomass.</p><p>The experiment compared CLM’s estimates of Gross Primary Productivity (GPP) — how much carbon is | ||
photosynthesized per year in a given area — both with and without data assimilation. This | ||
methodology allowed Huo’s team to obtain a benchmark of the model’s default behavior and compare it | ||
against the model’s behavior when independent observational data was used as a constraint. Huo’s | ||
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@@ -73,8 +73,9 @@ | |
the net carbon fluxes from land as input to the atmosphere.”</p><p>Addressing these questions will require international collaboration among a new generation of | ||
scientists, akin to those who developed the current suite of land surface models a generation ago. | ||
Huo will surely relish the opportunity to contribute.</p><h3 id=references>References</h3><p>Huo, X., A. M. Fox, H. Dashti, C. Devine, W. Gallery, W. K. Smith, B. Raczka, J. L. Anderson, | ||
A. Rogers, D. J. P. Moore, 2024: Assimilating leaf area index and aboveground biomass reveals new | ||
processes in carbon update in the Arctic and Boreal Region. <em>JGR Biosciences</em> (in review).</p><p>Rogers, A., S. P. Serbin, K. S. Ely, and S. D. Wullschleger, 2019: Terrestrial biosphere models may | ||
A. Rogers, D. J. P. Moore, 2024: Integrating State Data Assimilation and Innovative Model | ||
Parameterization Reduces Simulated Carbon Uptake in the Arctic and Boreal Region. <em>JGR Biosciences</em>, | ||
<strong>129</strong>, e2024JG008004, <a href=https://doi.org/10.1029/2024JG008004>doi.org/10.1029/2024JG008004</a>.</p><p>Rogers, A., S. P. Serbin, K. S. Ely, and S. D. Wullschleger, 2019: Terrestrial biosphere models may | ||
overestimate Arctic CO2 assimilation if they do not account for decreased quantum yield and | ||
convexity at low temperature. <em>New Phytologist</em>, <strong>223</strong>, 167–179 | ||
convexity at low temperature. <em>New Phytologist</em>, <strong>223</strong>, 167–179, | ||
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