Search Results - "HARMAN, Ian N"

The Wind in the Willows: Flows in Forest Canopies in Complex Terrain by Belcher, Stephen E, Harman, Ian N, Finnigan, John J

“…Forest canopies are important components of the terrestrial carbon budget, which has motivated a worldwide effort, FLUXNET, to measure CO 2 exchange between…”
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Rainfall interception and the coupled surface water and energy balance by van Dijk, Albert I.J.M., Gash, John H., van Gorsel, Eva, Blanken, Peter D., Cescatti, Alessandro, Emmel, Carmen, Gielen, Bert, Harman, Ian N., Kiely, Gerard, Merbold, Lutz, Montagnani, Leonardo, Moors, Eddy, Sottocornola, Matteo, Varlagin, Andrej, Williams, Christopher A., Wohlfahrt, Georg

“…•The rainfall interception evaporation process remains poorly understood.•Water budget methods typically produce higher estimates than energy budget…”
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simple unified theory for flow in the canopy and roughness sublayer by Harman, Ian N, Finnigan, John J

“…The mean flow profile within and above a tall canopy is well known to violate the standard boundary-layer flux-gradient relationships. Here we present a theory…”
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Scalar Concentration Profiles in the Canopy and Roughness Sublayer by Harman, Ian N., Finnigan, John J.

“…The mean flow and scalar concentration profiles within and above a tall canopy are well known to violate the standard boundary-layer flux-gradient…”
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Evaluation of climate variability and change in ACCESS historical simulations for CMIP6 by Rashid, Harun A., Sullivan, Arnold, Dix, Martin, Bi, Daohua, Mackallah, Chloe, Ziehn, Tilo, Dobrohotoff, Peter, O’Farrell, Siobhan, Harman, Ian N., Bodman, Roger, Marsland, Simon

“…We analyse and document the historical simulations performed by two versions of the Australian Community Climate and Earth System Simulator (ACCESS-CM2 and…”
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Moving beyond the incorrect but useful paradigm: reevaluating big-leaf and multilayer plant canopies to model biosphere-atmosphere fluxes – a review by Bonan, Gordon B., Patton, Edward G., Finnigan, John J., Baldocchi, Dennis D., Harman, Ian N.

“…•Single-layer canopy parameterizations in land surface models may be insufficient.•Simulations with a one-layer canopy are degraded compared to a multilayer…”
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Scalar fluxes from urban street canyons. Part i: Laboratory simulation by BARLOW, Janet F, HARMAN, Ian N, BELCHER, Stephen E

“…Flow over urban surfaces depends on surface morphology and interaction with the boundary layer above. However, the effect of the flow on scalar fluxes is hard…”
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How Many Facets are Needed to Represent the Surface Energy Balance of an Urban Area? by Porson, Aurore, Harman, Ian N, Bohnenstengel, Sylvia I, Belcher, Stephen E

“…We investigate the question of how many facets are needed to represent the energy balance of an urban area by developing simplified 3-, 2- and 1-facet versions…”
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The Role of Roughness Sublayer Dynamics Within Surface Exchange Schemes by Harman, Ian N.

“…Turbulence above and within canopies has characteristics distinct from that over rough surfaces. The vertical transport of momentum and scalars is dominated by…”
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Parametrizing Horizontally-Averaged Wind and Temperature Profiles in the Urban Roughness Sublayer by Theeuwes, Natalie E., Ronda, Reinder J., Harman, Ian N., Christen, Andreas, Grimmond, C. Sue B.

“…Tower-based measurements from within and above the urban canopy in two cities are used to evaluate several existing approaches that parametrize the vertical…”
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Modeling canopy-induced turbulence in the Earth system: a unified parameterization of turbulent exchange within plant canopies and the roughness sublayer (CLM-ml v0) by Bonan, Gordon B, Patton, Edward G, Harman, Ian N, Oleson, Keith W, Finnigan, John J, Lu, Yaqiong, Burakowski, Elizabeth A

“…Land surface models used in climate models neglect the roughness sublayer and parameterize within-canopy turbulence in an ad hoc manner. We implemented a…”
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Experiments on the flow over a hill covered by a canopy in stably stratified conditions by Finnigan, John J., Harman, Ian N., Hughes, Dale E.

“…It has long been suspected that thermo-topographic flows, especially gravity currents, within vegetation canopies on complex terrain are one of the main…”
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Spatial Variability of the Flow and Turbulence Within a Model Canopy by Harman, Ian N., Böhm, Margi, Finnigan, John J., Hughes, Dale

“…The spatial variability of the mean flow and turbulence in and above a model canopy is investigated using three-dimensional laser Doppler velocimetry. The mean…”
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The Impact of Source Distribution on Scalar Transport over Forested Hills by Ross, Andrew N., Harman, Ian N.

“…Numerical simulations of neutral flow over a two-dimensional, isolated, forested ridge are conducted to study the effects of scalar source distribution on…”
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Patterns of crop cover under future climates by Porfirio, Luciana L., Newth, David, Harman, Ian N., Finnigan, John J., Cai, Yiyong

“…We study changes in crop cover under future climate and socio-economic projections. This study is not only organised around the global and regional adaptation…”
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Decoupling of air flow above and in plant canopies and gravity waves affect micrometeorological estimates of net scalar exchange by van Gorsel, Eva, Harman, Ian N., Finnigan, John J., Leuning, Ray

“…► Turbulence within open canopies undergoes dramatic changes in character during the transition from convective to stable conditions. ► Within- and…”
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Improved representations of coupled soil–canopy processes in the CABLE land surface model (Subversion revision 3432) by Haverd, Vanessa, Cuntz, Matthias, Nieradzik, Lars P, Harman, Ian N

“…CABLE is a global land surface model, which has been used extensively in offline and coupled simulations. While CABLE performs well in comparison with other…”
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Flow Over a Narrow Ridge Covered with a Plant Canopy: A Comparison Between Wind-Tunnel Observations and Linear Theory by Harman, Ian N., Finnigan, John J.

“…We revisit the analytical model for atmospheric boundary-layer flow over a hill covered with a canopy of Finnigan and Belcher (Q J R Meteorol Soc 130:1–29,…”
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Flow Over Hills Covered by a Plant Canopy: Extension to Generalised Two-Dimensional Topography by Harman, Ian N, Finnigan, John J

“…An understanding of how topography, including that covered by a plant canopy, influences the flow and turbulence is important in many meteorological and…”
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The impact of changing the land surface scheme in ACCESS(v1.0/1.1) on the surface climatology by Kowalczyk, Eva A, Stevens, Lauren E, Law, Rachel M, Harman, Ian N, Dix, Martin, Franklin, Charmaine N, Wang, Ying-Ping

“…The Community Atmosphere Biosphere Land Exchange (CABLE) model has been coupled to the UK Met Office Unified Model (UM) within the existing framework of the…”
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