Summary

Abstract: The Mosaic land surface model (LSM) computes areally-averaged energy and water fluxes from the land surface in response to meteorological forcing. The model allows explicit vegetation control over the computed surface energy and water balances, with environmental stresses (high temperatures, dry soil, etc.) acting to increase canopy resistance and thus decrease transpiration. The scheme includes a canopy interception reservoir and three soil reservoirs: a thin layer near the surface, a middle layer that encompasses the remainder of the root zone, and a lower "recharge" layer for long term storage. Bare soil evaporation, transpiration, and interception loss occur in parallel, and runoff occurs both as overland flow during precipitation events and as ground water drainage out of the recharge layer. A complete snow budget is included. The model was originally derived from the SiB model of Sellers et al. (J. Climate, 1996) and still maintains certain SiB for mulations, particularly those for canopy resistance. The model's main innovation is its attempt to account for subgrid variability in surface characteristics through the "mosaic" approach. A grid square area containing several different vegetation regimes is divided into relatively homogeneous sub-regions ("tiles" of the mosaic), each containing a single vegetation or bare soil type. Observed vegetation distributions are used to determine the partitioning. A separate energy balance is calculated for each tile, and each tile maintains its own prognostic soil moisture contents and temperatures. [Summary provided by NASA.]

Related URL

Link: GET DATA Description: Request model data.

Service Citation

Title: Mosaic Land Surface Model Provider: NASA URL: http://nsipp.gsfc.nasa.gov/research/land/mosaic.html

Service Keywords

MODELS >COMPONENT PROCESS MODELS   [Definition]

MODELS >LAND SURFACE MODELS   [Definition]

MODELS >EARTH SCIENCE REANALYSES/ASSIMILATION MODELS   [Definition]

Science Keywords

AGRICULTURE >SOILS   [Definition]

ATMOSPHERE >ATMOSPHERIC TEMPERATURE >SURFACE AIR TEMPERATURE   [Definition]

ATMOSPHERE >ATMOSPHERIC WATER VAPOR >EVAPORATION   [Definition]

BIOSPHERE >VEGETATION >VEGETATION COVER   [Definition]

CRYOSPHERE >SNOW/ICE >SNOW DEPTH   [Definition]

TERRESTRIAL HYDROSPHERE >GROUND WATER >GROUND WATER DISCHARGE/FLOW   [Definition]

TERRESTRIAL HYDROSPHERE >GROUND WATER >DRAINAGE   [Definition]

TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW DEPTH   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >AQUIFER RECHARGE   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >DISCHARGE/FLOW   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >DRAINAGE   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >HYDROPATTERN   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >LAKES   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >RIVERS/STREAMS   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >RUNOFF   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >TOTAL SURFACE WATER   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >WATER CHANNELS   [Definition]

TERRESTRIAL HYDROSPHERE >SURFACE WATER >WATERSHED CHARACTERISTICS   [Definition]

LAND SURFACE >LAND USE/LAND COVER >LAND COVER   [Definition]

LAND SURFACE >SOILS   [Definition]

ISO Topic Category

FARMING BIOTA CLIMATOLOGY/METEOROLOGY/ATMOSPHERE GEOSCIENTIFIC INFORMATION IMAGERY/BASE MAPS/EARTH COVER INLAND WATERS

Project

ESIP >Earth Science Information Partners Program   [Information]

Keywords

Models

Land Surface

Water Fluxes

Water Balance

Meteorological Forcing

Transpiration

Snow Budget

Service Provider

Global Modeling and Assimilation, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA Service Provider Personnel Name: MICHELE, DR. RIENECKER Email: michele.m.rienecker at nasa.gov Contact Address: NASA Goddard Space Flight Center Mailstop 610.1 City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA

Personnel

TYLER B. STEVENS Role: SERF AUTHOR Phone: (301) 614-6898 Fax: 301-614-5268 Email: Tyler.B.Stevens at nasa.gov Contact Address: NASA Goddard Space Flight Center Global Change Master Directory City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA

MICHELE, DR. RIENECKER Role: TECHNICAL CONTACT Email: michele.m.rienecker at nasa.gov Contact Address: NASA Goddard Space Flight Center Mailstop 610.1 City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA

Creation and Review Dates

SERF Creation Date: 2006-11-13 SERF Last Revision Date: 2007-11-05