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Periodic global parameterization

Nicolas Ray, Wan Chiu Li, Bruno Lévy, Alla Sheffer, Pierre Alliez
2006 ACM Transactions on Graphics  
We present a new globally smooth parameterization method for triangulated surfaces of arbitrary topology.  ...  Given two orthogonal piecewise linear vector elds dened over the input mesh (typically the estimated principal curvature directions), our method computes two piecewise linear periodic functions, aligned  ...  We will refer to this configuration as a periodic global parameterization.  ... 
doi:10.1145/1183287.1183297 fatcat:jgjcevuck5fttmufe2j6fh75ay

Coupling an ocean wave model with a global aerosol transport model: A sea salt aerosol parameterization perspective

Marcin L. Witek, Piotr J. Flatau, João Teixeira, Douglas L. Westphal
2007 Geophysical Research Letters  
Westphal (2007) , Coupling an ocean wave model with a global aerosol transport model: A sea salt aerosol parameterization perspective, Geophys. Res. Lett., 34, L14806,  ...  1] A new approach to sea salt parameterization is proposed which incorporates wind-wave characteristics into the sea salt emission function and can be employed globally and under swell-influenced conditions  ...  emission parameterization.  ... 
doi:10.1029/2007gl030106 fatcat:4w33hjrrljdxnh2y4idrda5gh4

A survey of phase variable candidates of human locomotion

Dario J. Villarreal, Robert D. Gregg
2014 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society  
The angle with respect to a global reference frame at the hip is able to monotonically parameterize both the stance and swing periods of the gait cycle.  ...  This approach has been applied to control a powered transfemoral prosthetic leg, but the proposed phase variable was limited to the stance period of the prosthesis only.  ...  The hip angle with respect to a global reference frame is an angle that parameterizes monotonically both stance and swing periods of the gait cycle.  ... 
doi:10.1109/embc.2014.6944505 pmid:25570873 pmcid:PMC4288014 dblp:conf/embc/VillarrealG14 fatcat:rwm3slcnjjhs5av4d4mcv7s4ta

Warming asymmetry in climate change simulations

G. M. Flato, G. J. Boer
2001 Geophysical Research Letters  
The global average warming and the net penetration of heat into the global ocean (and hence its thermal expansion) are essentially unchanged.  ...  This is associated with an improved parameterization of ocean mixing which results in a decrease in heat penetration into the Southern Ocean, in accord with earlier ocean-only and simple coupled model  ...  The vertical dashed lines indicate the 1978 to 1996 period of satellite observations referred to in the text.which the usual horizontal/vertical (HV) diffusive parameterization of sub-grid ocean mixing  ... 
doi:10.1029/2000gl012121 fatcat:d6mcbgzmvreibk64lbfiiq5oya

Semiregular patterns on surfaces

Craig S. Kaplan
2007 ACM SIGGRAPH 2007 sketches on - SIGGRAPH '07  
Globally smooth parameterizations with low distortion. ACM Transactions on Graphics (Proceedings of SIGGRAPH 2003) 22, 3 (July), 350-357.  ...  We use Spectral Surface Quadrangulation [Dong et al. 2006] for square domains and Globally Smooth Parameterization [Khodakovsky et al. 2003 ] for triangles.  ... 
doi:10.1145/1278780.1278874 dblp:conf/siggraph/Kaplan07 fatcat:2qbdaavnxrfovc7oqs6lt6lxji

Semiregular patterns on surfaces

Craig S. Kaplan
2009 Proceedings of the 7th International Symposium on Non-Photorealistic Animation and Rendering - NPAR '09  
Globally smooth parameterizations with low distortion. ACM Transactions on Graphics (Proceedings of SIGGRAPH 2003) 22, 3 (July), 350-357.  ...  We use Spectral Surface Quadrangulation [Dong et al. 2006] for square domains and Globally Smooth Parameterization [Khodakovsky et al. 2003 ] for triangles.  ... 
doi:10.1145/1572614.1572620 dblp:conf/npar/Kaplan09 fatcat:p6djdwruhvahtknzuwaov6yfmy

Revisiting particle dry deposition and its role in radiative effect estimates

Ethan W. Emerson, Anna L. Hodshire, Holly M. DeBolt, Kelsey R. Bilsback, Jeffrey R. Pierce, Gavin R. McMeeking, Delphine K. Farmer
2020 Proceedings of the National Academy of Sciences of the United States of America  
We present a revised observationally driven parameterization for regional and global aerosol models.  ...  Dry deposition parameterizations in most global models were developed when few particle deposition measurements were available.  ...  We present a revised observationally driven parameterization for regional and global aerosol models.  ... 
doi:10.1073/pnas.2014761117 pmid:33020302 fatcat:p6z2vy2q4jhzvgwzvtxlidbmmy

Assessments of Solar, Thermal and Net Irradiance from Simple Solar Geometry and Routine Meteorological Measurements in the Pannonian Basin

Zlatica Popov, Zoltán Nagy, Györgyi Baranka, Tamás Weidinger
2021 Atmosphere  
The suggested parameterizations of the net radiation based on the separately parameterized all radiation balance components were: Foken's calculation for clear sky solar global irradiance, Beljaars and  ...  Finally, we compared the calculated and measured values for longer periods (2008–2010 and 2008–2017) through statistical errors.  ...  Foken's calculations for clear skies and Kasten and Czeplak [39]-type cloud parameterization was used for the global solar radiation calculations.  ... 
doi:10.3390/atmos12080935 fatcat:yy6m4m4uvjc2fizivt6gusy5uu

Page 2137 of Journal of the Atmospheric Sciences Vol. 62, Issue 7 [page]

2005 Journal of the Atmospheric Sciences  
In his experiments, the CRCP was embedded into a simplified global model representing an aqua planet with globally uniform sea-surface temperatures (SSTs), no topography, etc.  ...  Section 2 pre- sents a brief description of the SP-CAM as well as the 'For the approaches that do not require periodical domains, see Randall et al. (2003a) and Arakawa (2004).  ... 

Impact of Nonzero Intercept Gas Transfer Velocity Parameterizations on Global and Regional Ocean–Atmosphere CO2 Fluxes

Mariana Ribas-Ribas, Gianna Battaglia, Matthew P. Humphreys, Oliver Wurl
2019 Geosciences  
Considering a global average wind speed over the ocean of 6.6 m s−1, a nonzero intercept might have a significant impact on global FCO2.  ...  The global ocean observation-based analysis suggests that ignoring a nonzero intercept results in an ocean-sink increase of 0.73 Gt C yr−1.  ...  Globally, the F W reveals a mean FCO 2 of −2.56 Gt-C yr −1 for the period 1982-2018. The FCO 2 in this study using M, with a nonzero intercept, was −1.83 Gt-C yr −1 .  ... 
doi:10.3390/geosciences9050230 fatcat:pduvrsimarcwbmn3qsn247fft4

Multiscale Convective Organization and the YOTC Virtual Global Field Campaign

Mitchell W. Moncrieff, Duane E. Waliser, Martin J. Miller, Melvyn A. Shapiro, Ghassem R. Asrar, James Caughey
2012 Bulletin of The American Meteorological Society - (BAMS)  
Superparameterization has some immediate advantages over the traditional parameterization: (i) mesoscale convection is explicit, albeit two-dimensional and limited to periodic columns of the parent global  ...  The YOTC global analysis complements global reanalysis, which is performed for longer time periods (decades) and at coarser resolution, typically 100-200-km grid length.  ... 
doi:10.1175/bams-d-11-00233.1 fatcat:ywu45qvdxvdhjmkdcvfuho27ci

A Robust Parameterization of Human Gait Patterns Across Phase-Shifting Perturbations

Dario J. Villarreal, Hasan A. Poonawala, Robert D. Gregg
2017 IEEE transactions on neural systems and rehabilitation engineering  
The hip phase angle also best parameterized the transient errors about the nominal periodic orbit.  ...  Finally, interlimb phasing was best explained by local (ipsilateral) hip phase angles that are synchronized during the double-support period.  ...  The first three are global variables and the last three are relative variables. Additional global variables include the tibia angle θt and the thigh angle Θ, i.e., global hip angle.  ... 
doi:10.1109/tnsre.2016.2569019 pmid:27187967 pmcid:PMC5107364 fatcat:tblzddrdtbbk5m7xmfmeu4f5s4

Stability Results of a Class of Hybrid Systems under Switched Continuous-Time and Discrete-Time Control

M. De la Sen, A. Ibeas
2009 Discrete Dynamics in Nature and Society  
Global asymptotic stability of the switched system is guaranteed for the case when a common Lyapunov function exists for all the individual parameterizations and the sampling period of the eventual discretized  ...  parameterizations taking part of the switched system is small enough.  ...  As a result, the whole system is globally asymptotically stable for arbitrary switching between parameterizations and switching between continuous and discrete control laws for small-sampling period according  ... 
doi:10.1155/2009/315713 fatcat:ivsh54vtfjaibisgpbjchbjyzu

A consistent prescription of stratospheric aerosol for both radiation and chemistry in the Community Earth System Model (CESM1)

Ryan Reynolds Neely III, Andrew J. Conley, Francis Vitt, Jean-François Lamarque
2016 Geoscientific Model Development  
In particular, the scheme used in the CMIP5 simulations by CESM1 simulated a global mean surface temperature decrease that was inconsistent with the GISS Surface Temperature Analysis (GISTEMP), NOAA's  ...  Results also indicate that the new scheme decreases the global mean temperature response to the 1991 Pinatubo eruption by half of the observed temperature change, and modelled climate variability precludes  ...  vs. five members using the original parameterization over the period influenced most strongly by the 1991 Mt.  ... 
doi:10.5194/gmd-9-2459-2016 fatcat:yudfaexvsjd4tlyaafoj5wqola

Quantifying sources of inter-model diversity in the cloud albedo effect

L. J. Wilcox, E. J. Highwood, B. B. B. Booth, K. S. Carslaw
2015 Geophysical Research Letters  
There is a large diversity in the global load and spatial distribution of sulfate aerosol, as well as in global mean cloud top effective radius.  ...  The use of different parameterizations of aerosol-cloud interactions makes the largest contribution to diversity in modeled radiative forcing (−39%, +48% about the mean estimate).  ...  Figure 1a shows the change in vertically integrated sulfate load over the historical period versus the 1860 global mean load for 12 models.  ... 
doi:10.1002/2015gl063301 fatcat:zyapdm5pzrdxpkh7dt2wbu7pvy
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