Journal ArticleDOI
Coupling an Advanced Land Surface–Hydrology Model with the Penn State–NCAR MM5 Modeling System. Part I: Model Implementation and Sensitivity
Fei Chen,Jimy Dudhia +1 more
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In this paper, the authors address and document a number of issues related to the implementation of an advanced land surface-hydrology model in the Penn State-NCAR fifth-generation Mesoscale Model (MM5).Abstract:
This paper addresses and documents a number of issues related to the implementation of an advanced land surface–hydrology model in the Penn State–NCAR fifth-generation Mesoscale Model (MM5). The concept adopted here is that the land surface model should be able to provide not only reasonable diurnal variations of surface heat fluxes as surface boundary conditions for coupled models, but also correct seasonal evolutions of soil moisture in the context of a long-term data assimilation system. In a similar way to that in which the modified Oregon State University land surface model (LSM) has been used in the NCEP global and regional forecast models, it is implemented in MM5 to facilitate the initialization of soil moisture. Also, 1-km resolution vegetation and soil texture maps are introduced in the coupled MM5–LSM system to help identify vegetation/water/soil characteristics at fine scales and capture the feedback of these land surface forcings. A monthly varying climatological 0.15° × 0.15° green ...read more
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A Description of the Advanced Research WRF Version 3
C. Skamarock,B. Klemp,Jimy Dudhia,O. Gill,Dale Barker,G. Duda,Xiang-Yu Huang,Wei Wang,G. Powers +8 more
TL;DR: The Technical Note series provides an outlet for a variety of NCAR manuscripts that contribute in specialized ways to the body of scientific knowledge but which are not suitable for journal, monograph, or book publication.
Journal ArticleDOI
A New Vertical Diffusion Package with an Explicit Treatment of Entrainment Processes
TL;DR: In this article, a revised vertical diffusion algorithm with a nonlocal turbulent mixing coefficient in the planetary boundary layer (PBL) is proposed for weather forecasting and climate prediction models, which improves several features compared with the Hong and Pan implementation.
Journal ArticleDOI
Estimates of global terrestrial isoprene emissions using MEGAN (Model of Emissions of Gases and Aerosols from Nature)
TL;DR: The Model of Emissions of Gases and Aerosols from Nature (MEGAN) is used to quantify net terrestrial biosphere emission of isoprene into the atmosphere as mentioned in this paper.
A Description of the Advanced Research WRF Version 2
William C. Skamarock,Joseph B. Klemp,Jimy Dudhia,David O. Gill,Dale Barker,Wei Wang,Jordan G. Powers +6 more
TL;DR: The Weather Research and Forecasting (WRF) model as mentioned in this paper was developed as a collaborative effort among the NCAR Mesoscale and Microscale Meteorology (MMM) Division, the National Oceanic and Atmospheric Administration's (NOAA) National Centers for Environmental Prediction (NCEP) and Forecast System Laboratory (FSL), the Department of Defense's Air Force Weather Agency (AFWA) and Naval Research Laboratory (NRL), the Center for Analysis and Prediction of Storms (CAPS) at the University of Oklahoma, and the Federal Aviation Administration (F
Journal ArticleDOI
The model of emissions of gases and aerosols from nature version 2.1 (MEGAN2.1): An extended and updated framework for modeling biogenic emissions
Alex Guenther,X. Jiang,Colette L. Heald,Tanarit Sakulyanontvittaya,T. Duhl,Louisa K. Emmons,Xuemei Wang +6 more
TL;DR: The Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN2.1) as discussed by the authors is an update from the previous versions including MEGAN1.0, which was described for isoprene emissions by Guenther et al. (2006) and MEGan2.02, which were described for monoterpene and sesquiterpene emissions by Sakulyanontvittaya et al (2008).
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Journal ArticleDOI
The NCEP/NCAR 40-Year Reanalysis Project
Eugenia Kalnay,Masao Kanamitsu,Robert Kistler,William D. Collins,D.G. Deaven,L. S. Gandin,M. Iredell,Suranjana Saha,Glenn H. White,John S. Woollen,Yuejian Zhu,Muthuvel Chelliah,Wesley Ebisuzaki,Wayne Higgins,John E. Janowiak,Kingtse C. Mo,Chester F. Ropelewski,Julian X. L. Wang,Ants Leetmaa,Richard W. Reynolds,Roy L. Jenne,Dennis Joseph +21 more
TL;DR: The NCEP/NCAR 40-yr reanalysis uses a frozen state-of-the-art global data assimilation system and a database as complete as possible, except that the horizontal resolution is T62 (about 210 km) as discussed by the authors.
Journal ArticleDOI
Nonlocal Boundary Layer Vertical Diffusion in a Medium-Range Forecast Model
Song-You Hong,Hua Lu Pan +1 more
TL;DR: In this paper, a boundary layer diffusion package based on the Troen and Mahrt nonlocal diffusion concept has been tested for possible operational implementation and compared with those from the local diffusion approach, which is the current operational scheme.
Journal ArticleDOI
A Simple Biosphere Model (SIB) for Use within General Circulation Models
TL;DR: In this paper, a simple realistic biosphere model for calculating the transfer of energy, mass and momentum between the atmosphere and the vegetated surface of the earth has been developed for use in atmospheric general circulation models.
Journal ArticleDOI
A Simple Parameterization of Land Surface Processes for Meteorological Models
Joël Noilhan,Serge Planton +1 more
TL;DR: In this article, a parameterization of land surface processes to be included in mesoscale and large-scale meteorological models is presented, where the number of parameters has been reduced as much as possible, while attempting to preserve the representation of the physics which controls the energy and water budgets.