edu.ucar.opensky::articles:22340 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:42:10.310545 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d75q504m https://doi.org/10.18140/FLX/1440189 https Related Dataset #1 FLUXNET2015 ZM-Mon Mongu https://doi.org/10.20783/DIAS.501 https Related Dataset #2 Global Soil Wetness Project Phase 3 Atmospheric Boundary Conditions (Experiment 1) https://doi.org/10.17190/AMF/1246088 https Related Dataset #3 AmeriFlux US-NR1 Niwot Ridge Forest (LTER NWT1) The impact of biomass heat storage on the canopy energy balance and atmospheric stability in the Community Land Model 2019-01-01T00:00:00Z publication https://n2t.org/ark:/85065/d75q504m https://doi.org/10.1029/2018MS001476 Swenson, Sean author Burns, Sean author Lawrence, David M. author UCAR/NCAR - Library publisher Atmospheric models used for weather prediction and future climate projections rely on landmodels to calculate surface boundary conditions. Observations of near-surface states and fluxes made atflux measurement sites provide valuable data with which to assess the quality of simulated lower boundaryconditions. A previous assessment of the Community Land Model version 4.5 using data from the NiwotRidge Subalpine Forest AmeriFlux tower showed that simulated latent heat fluxes could be improved byadjusting a parameter describing the maximum leaf wetted area, but biases in midday sensible heat fluxand nighttime momentum flux were generally not reduced by model parameter perturbations. Thesebiases are related to the model's lack of heat storage in vegetation biomass. A biomass heat capacity isparameterized in Community Land Model version 5 with measurable quantities such as canopy height,diameter at breast height, and tree number density. After implementing a parameterization describing theheat transfer between the forest biomass and the canopy air space, the biases in the mean midday sensibleheat and mean nighttime momentum fluxes at Niwot Ridge are reduced from 47 to 13 W/m2and from 0.12to−0.03 m/s, respectively. The bias in the mean nighttime canopy air temperature was reduced from−5.9to 0.4∘C. Additional simulations at other flux tower sites demonstrate a consistent reduction in middaysensible heat flux, a lower ratio of the sum of sensible andlatent heat flux to net radiation, and an increasein nighttime canopy temperatures UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copypright 2019 Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license. None eng geoscientificInformation