Search Results - "Holdaway, Daniel"

Analyzing changes in the complexity of climate in the last four decades using MERRA-2 radiation data by Delgado-Bonal, Alfonso, Marshak, Alexander, Yang, Yuekui, Holdaway, Daniel

“…The energy balance of the Earth is controlled by the shortwave and longwave radiation emitted to space. Changes in the thermodynamic state of the system over…”
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Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part II): Cloud Coverage by Holdaway, Daniel, Yang, Yuekui

“…This is the second part of a study on how temporal sampling frequency affects satellite retrievals in support of the Deep Space Climate Observatory (DSCOVR)…”
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Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results (Part I): Earths Radiation Budget by Holdaway, Daniel, Yang, Yuekui

“…Satellites always sample the Earth-atmosphere system in a finite temporal resolution. This study investigates the effect of sampling frequency on the…”
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Assessing the tangent linear behaviour of common tracer transport schemes and their use in a linearised atmospheric general circulation model by Holdaway, Daniel, Kent, James

“…The linearity of a selection of common advection schemes is tested and examined with a view to their use in the tangent linear and adjoint versions of an…”
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An idealized test case for assessing the linearization of tracer transport schemes in NWP models by Kent, James, Holdaway, Daniel

“…The linearized version of a numerical weather prediction (NWP) model, which consists of its tangent linear model (TLM) and adjoint, has a number of important…”
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Developing a Radar Signal Simulator for the Community Radiative Transfer Model by Moradi, Isaac, Johnson, Benjamin, Stegmann, Patrick, Holdaway, Daniel, Heymsfield, Gerald, Gelaro, Ronald, McCarty, Will

“…Active radar instruments provide vertically resolved clouds and precipitation measurements that cannot be provided by the passive instruments. These active…”
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Study of the Effect of Temporal Sampling Frequency on DSCOVR Observations Using the GEOS-5 Nature Run Results by Holdaway, Daniel, Yang, Yuekui

“…This is the second part of a study on how temporal sampling frequency affects satellite retrievals in support of the Deep Space Climate Observatory (DSCOVR)…”
Get full text

Analyzing Changes in the Complexity of Climate in the Last Four Decades Using MERRA-2 Radiation Data by Delgado-Bonal, Alfonso, Marshak, Alexander, Yang, Yuekui, Holdaway, Daniel

“…The energy balance of the Earth is controlled by the shortwave and longwave radiation emitted to space. Changes in the thermodynamic state of the system over…”
Get full text

Data assimilation for the Model for Prediction Across Scales - Atmosphere with the Joint Effort for Data assimilation Integration assimilations by Guerrette, Jonathan J, Liu, Zhiquan, Snyder, Chris, Jung, Byoung-Joo, Schwartz, Craig S, Ban, Junmei, Vahl, Steven, Wu, Yali, Baños, Ivette Hernández, Yu, Yonggang G, Ha, Soyoung, Trémolet, Yannick, Auligné, Thomas, Gas, Clementine, Ménétrier, Benjamin, Shlyaeva, Anna, Miesch, Mark, Herbener, Stephen, Liu, Emily, Holdaway, Daniel, Johnson, Benjamin T

“…An ensemble of 3D ensemble-variational (En-3DEnVar) data assimilations is demonstrated with the Joint Effort for Data assimilation Integration (JEDI) with the…”
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Data assimilation for the Model for Prediction Across Scales – Atmosphere with the Joint Effort for Data assimilation Integration (JEDI-MPAS 1.0.0): EnVar implementation and evaluation by Liu, Zhiquan, Snyder, Chris, Guerrette, Jonathan J, Jung, Byoung-Joo, Ban, Junmei, Vahl, Steven, Wu, Yali, Trémolet, Yannick, Auligné, Thomas, Ménétrier, Benjamin, Shlyaeva, Anna, Herbener, Stephen, Liu, Emily, Holdaway, Daniel, Johnson, Benjamin T

“…On 24 September 2021, JEDI-MPAS 1.0.0, a new data assimilation (DA) system for the Model Prediction Across Scales – Atmosphere (MPAS-A) built on the software…”
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Data assimilation for the Model for Prediction Across Scales – Atmosphere with the Joint Effort for Data assimilation Integration (JEDI-MPAS 2.0.0-beta): ensemble of 3D ensemble-variational (En-3DEnVar) assimilations by Guerrette, Jonathan J., Liu, Zhiquan, Snyder, Chris, Jung, Byoung-Joo, Schwartz, Craig S., Ban, Junmei, Vahl, Steven, Wu, Yali, Baños, Ivette Hernández, Yu, Yonggang G., Ha, Soyoung, Trémolet, Yannick, Auligné, Thomas, Gas, Clementine, Ménétrier, Benjamin, Shlyaeva, Anna, Miesch, Mark, Herbener, Stephen, Liu, Emily, Holdaway, Daniel, Johnson, Benjamin T.

“…An ensemble of 3D ensemble-variational (En-3DEnVar) data assimilations is demonstrated with the Joint Effort for Data assimilation Integration (JEDI) with the…”
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Coupling the Planetary Boundary Layer to the Large Scale Dynamics of the Atmosphere: The Impact of Vertical Discretisation by Holdaway, Daniel

“…Accurate coupling between the resolved scale dynamics and sub-grid scale physics is essential for accurate modelling of the atmosphere. Previous emphasis has…”
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Definition of the moist-air exergy norm: a comparison with existing "moist energy norms" by Marquet, Pascal, Mahfouf, Jean-François, Holdaway, Daniel

“…This study presents a new formulation for the norms and scalar products used in tangent linear or adjoint models to determine forecast errors and sensitivity…”
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