Journal
JOURNAL OF HYDROMETEOROLOGY
Volume 20, Issue 7, Pages 1359-1377Publisher
AMER METEOROLOGICAL SOC
DOI: 10.1175/JHM-D-18-0237.1
Keywords
Carbon cycle; Hydrology; Water budget; balance; Data assimilation
Categories
Funding
- NOAA's Climate Program Office (MAPP program)
- NASA's National Climate Assessment-Land Data Assimilation project
Ask authors/readers for more resources
Accurate representation of vegetation states is required for the modeling of terrestrial water-energy-carbon exchanges and the characterization of the impacts of natural and anthropogenic vegetation changes on the land surface. This study presents a comprehensive evaluation of the impact of assimilating remote sensing-based leaf area index (LAI) retrievals over the continental United States in the Noah-MP land surface model, during a time period of 2000-17. The results demonstrate that the assimilation has a beneficial impact on the simulation of key water budget terms, such as soil moisture, evapotranspiration, snow depth, terrestrial water storage, and streamflow, when compared with a large suite of reference datasets. In addition, the assimilation of LAI is also found to improve the carbon fluxes of gross primary production (GPP) and net ecosystem exchange (NEE). Most prominent improvements in the water and carbon variables are observed over the agricultural areas of the United States, where assimilation improves the representation of vegetation seasonality impacted by cropping schedules. The systematic, added improvements from assimilation in a configuration that employs high-quality boundary conditions highlight the significant utility of LAI data assimilation in capturing the impacts of vegetation changes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available