Mark Daniel Piper

Mark Daniel Piper
University of Colorado Boulder | CUB · Institute of Arctic and Alpine Research (INSTAAR)

PhD

About

22
Publications
3,883
Reads
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223
Citations
Citations since 2016
10 Research Items
141 Citations
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Introduction
I use open source software to develop model coupling cyberinfrastructure for the geosciences.
Additional affiliations
October 2013 - present
University of Colorado Boulder
Position
  • Research Associate
Education
August 1995 - September 2001
University of Colorado Boulder
Field of study
  • Astrophysical, Planetary, and Atmospheric Sciences
August 1992 - August 1994
Pennsylvania State University
Field of study
  • Meteorology
August 1988 - May 1992
University of Wisconsin–Madison
Field of study
  • Mathematics

Publications

Publications (22)
Article
Full-text available
Computational modeling occupies a unique niche in Earth and environmental sciences. Models serve not just as scientific technology and infrastructure but also as digital containers of the scientific community's understanding of the natural world. As this understanding improves, so too must the associated software. This dual nature – models as both...
Preprint
Full-text available
Computational modelling occupies a unique niche in Earth and environmental sciences. Models serve not just as scientific technology and infrastructure, but also as digital containers of the scientific community's understanding of the natural world. As this understanding improves, so too must the associated software. This dual nature–models as both...
Article
Full-text available
Divergence in land carbon cycle simulation is persistent and widespread. Regardless of model intercomparison project, results from individual models diverge significantly from each other and, in consequence, from reference datasets. Here we link model spread to structure using a 15-member ensemble of land surface models from the Multi-scale synthes...
Article
Full-text available
Recent observations of near-surface soil temperatures over the circumpolar Arctic show accelerated warming of permafrost-affected soils. The availability of a comprehensive near-surface permafrost and active layer dataset is critical to better understanding climate impacts and to constraining permafrost thermal conditions and its spatial distributi...
Article
Full-text available
A new resource makes it easier for researchers to explore predictions of how melting permafrost might affect carbon release, wetlands, and river deltas as they evolve and other interacting effects.
Article
Full-text available
Recent observations of near-surface soil temperatures over the circumpolar Arctic show accelerated warming of permafrost-affected soils. A comprehensive near-surface permafrost temperature dataset is critical to better understand climate impacts and to constrain permafrost thermal conditions and spatial distribution in land system models. We compil...
Article
Full-text available
Suomi National Polar-orbiting Partnership (NPP) is the first of a new generation of NASA's Earth-observing research satellites. The Suomi NPP Visible Infrared Imaging Radiometer Suite (VIIRS) collects visible and infrared views of Earth's dynamic surface processes. This NPP mission produces a series of Environmental Data Records (EDRs). As accurate...
Article
CSDMS, The Community Surface Dynamics Modeling System, is an NSF funded project whose focus is to aid a diverse community of earth and ocean system model users and developers to use and create robust software quickly. To this end, CSDMS develops, integrates, archives and disseminates earth-system models and tools to an international (67 country) co...
Article
With the proliferation of scientific data in the public domain, improved methods for facilitating the discovery and dissemination of the data are sorely needed. NASA recently confronted this challenging problem within the context of the NextGen 4-D Weather Cube, a virtual database of weather observations and forecasts that, among other applications...
Article
Full-text available
Very little is known about the nature of turbulence in the transition zone of a synoptic-scale cold front, especially at the dissipative scales. Lacking this knowledge, accurate models of surface frontogenesis are compromised. To address this problem, high-frequency measurements from sonic and hot-wire anemometers are used to analyze the finescale...
Article
Full-text available
The levels of turbulence and dissipation occurring in a frontal zone through the calculation of kinetic energy spectra and dissipation rates were discussed. Three techniques for calculating the dissipation rate: direct dissipation technique, inertial dissipation technique and Kolmogorov's four-fifths law were studied. The calculations resulting fro...
Article
An important parameter in the numerical simulation of atmospheric boundary layers is the dissipation length scale, l{sub {var_epsilon}}. It is especially important in weakly to moderately stable conditions, in which a tenuous balance between shear production of turbulence, buoyant destruction of turbulence, and turbulent dissipation is maintained....
Article
It is accepted that atmospheric boundary layer (ABL) turbulence plays a role in limiting the contraction of a surface frontal zone. However, very little is known about the nature of turbulence in a frontal zone, especially at the dissipative scales. Without explicit knowledge of the turbulence in a frontal zone, accurate models of surface fronto-ge...
Article
Observations of two low-level frontal passages by a hot-wire anemometer placed at 3 m above the ground provide evidence that frontal zones and the postfrontal regions exhibit enhanced kinetic energy dissipation. These observations support a postulated linear relationship between turbulent kinetic energy dissipation rate and a characteristic frontal...
Article
High frequency wind and temperature measurements, obtained in March 1995 from a 10-m tower array situated in south-east Kansas, are used to analyze the structure of a shallow density current. This current is approximately 7 m deep and exhibits a current head that is estimated to be about twice the current depth. The event lasted approximately 900 s...
Article
Large-eddy simulation (LES) results indicate that turbulent scalar diffusion in the convective atmospheric boundary layer (CBL) has interesting properties. A scalar introduced into the bottom of the CBL with no flux through the top (bottom-up diffusion) has a radically different eddy diffusivity profile than a scalar introduced at the CBL top with...
Article
Full-text available
These experiments are part of a project whose objectives are to improve our understanding of diffusion in convective turbulence and to develop better models of this diffusion for a wide range of applications. Toward those ends, two diffusion problems are being studied in the Fluid modeling Facility (FMF) convection tank. The first concerns "transpo...

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