8 Works

Extracting Integral-Scale Spatial-Temporal Relationships of Near-Surface Atmospheric Turbulence from Field Experimental Data

Y. Pan, S. Wray & E. Patton
Knowing the integral time and length scales is critical for parameterizing the energy-containing turbulent motions. For field experimental data, direct estimates of integral length scales are highly limited owing to insufficient horizontal resolution of sensor deployments. With an objective to improve indirect estimates of integral length scales, a new approach is proposed to extract the spatial-temporal relationships embedded within field experimental data. The interest in integral scales motivates employing spatial correlations computed using both raw...

Data from: High-latitude stratospheric aerosol injection to preserve the Arctic

Walker Lee, Douglas MacMartin, Daniele Visioni, Ben Kravitz, Chen Yating, John C. Moore, Gunter Leguy & David Lawrence

Data supplement to: Plant proxy evidence for high rainfall and productivity in the eocene of Australia

Tammo Reichgelt, David Greendwood, Sebastian Steinig, John Conran, David Hutchinson, Daniel Lunt, Leonie Scriven & Jiang Zhu
During the early to middle Eocene, a mid-to-high latitudinal position and enhanced hydrological cycle in Australia would have contributed to a wetter and “greener” Australian continent where today arid to semi-arid climates dominate. Here, we revisit 12 Australian plant megafossil sites from the early to middle Eocene to generate temperature, precipitation and seasonality paleoclimate estimates, as well as net primary productivity (NPP) and vegetation type, based on paleobotanical proxies and compare to early Eocene global...

Variability due to climate and chemistry in observations of oxygenated Earth-analogue exoplanets: Simulations and results

Gregory Cooke, Dan Marsh, Catherine Walsh, Sarah Rugheimer & Geronimo Villanueva
The Great Oxidation Event was a period during which Earth’s atmospheric oxygen (O2) concentrations increased from ~10−5 times its present atmospheric level (PAL) to near modern levels, marking the start of the Proterozoic geological eon 2.4 billion years ago. Using WACCM6, an Earth System Model, we simulate the atmosphere of Earth-analogue exoplanets with O2 mixing ratios between 0.1% and 150% PAL. Using these simulations, we calculate the reflection/emission spectra over multiple orbits using the Planetary...

Supplementary data, code, and information for ‘Testing the Fidelity of Methods Used in Proxy-based Reconstructions of Past Climate’ (Journal of Climate, Mann et al. 2005)

M. Mann, S. Rutherford, E. Wahl & C. Ammann
Two widely used statistical approaches to reconstructing past climate histories from climate “proxy” data such as tree rings, corals, and ice cores are investigated using synthetic “pseudoproxy” data derived from a simulation of forced climate changes over the past 1200 yr. These experiments suggest that both statistical approaches should yield reliable reconstructions of the true climate history within estimated uncertainties, given estimates of the signal and noise attributes of actual proxy data networks.

CHIME ABM of Hurricane Evacuation

Sean Bergin, C Michael Barton, Joshua Watts, Joshua Alland & Rebecca Morss
The Communicating Hazard Information in the Modern Environment (CHIME) agent-based model (ABM) is a Netlogo program that facilitates the analysis of information flow and protective decisions across space and time during hazardous weather events. CHIME ABM provides a platform for testing hypotheses about collective human responses to weather forecasts and information flow, using empirical data from historical hurricanes. The model uses real world geographical and hurricane data to set the boundaries of the simulation, and...

Idealized atmospheric boundary layer and tornado simulations for Wang et al. (2022) two-layer-model study.

A. Wang, Y. Pan, G. Bryan & P. Markowski
This dataset contains the numerical simulations used in the Wang et al. (2022) study of two-layer-model in an idealized atmospheric boundary layer and an idealized tornado. That work modifies a wall model from the engineering community known as two-layer model (TLM) to a widely used atmospheric LES mode, Cloud Model 1 (CM1). LES of an idealized, neutral atmospheric boundary layer are performed first, in order to validate the implementation of the TLM in CM1. Next,...

The potential benefits of handling mixture statistics via a bi-Gaussian EnKF: Tests with all-sky satellite infrared radiances

M. Chan, X. Chen & J. Anderson
The meteorological characteristics of cloudy atmospheric columns can be very different from their clear counterparts. Thus, when a forecast ensemble is uncertain about the presence/absence of clouds at a specific atmospheric column (i.e., some members are clear while others are cloudy), that column's ensemble statistics will contain a mixture of clear and cloudy statistics. Such mixtures are inconsistent with the ensemble data assimilation algorithms currently used in numerical weather prediction. Hence, ensemble data assimilation algorithms...

Registration Year

  • 2022
    8

Resource Types

  • Dataset
    7
  • Software
    1

Affiliations

  • National Center for Atmospheric Research
    8
  • Pennsylvania State University
    4
  • University of Adelaide
    1
  • Goddard Space Flight Center
    1
  • Roger Williams University
    1
  • Alfred University
    1
  • Indiana University
    1
  • Beijing Normal University
    1
  • University of Leeds
    1
  • University of Connecticut
    1