Robert Pincus

Weak Tropical Tropospheric OH Response to Idealized ENSO

Qindan Zhu, Arlene M. Fiore, Robert Pincus, Jian Guan et autres

Abstract The hydroxyl radical (OH) is a key oxidant for methane. Previous studies suggest that OH exhibits interannual variability linked to the El Nino–Southern Oscillation (ENSO), but the sign, magnitude, and underlying mechanisms of this response remain uncertain. We diagnose changes in …

us (code pays fourni par la source)

RTE+RRTMGP

Robert Pincus, Michael Iacono, Dmitry Alexeev, Panos Adamidis et autres

RTE+RRTMGP is a set of codes for computing radiative fluxes in planetary atmospheres. RRTMGP uses a k-distribution to provide an optical description (absorption and possibly Rayleigh optical depth) of the gaseous atmosphere, along with the relevant source functions, on a pre-determined spectral …

pyRTE-RRTMGP

Robert Pincus, makepath LLC, Josué Miguel Sehnem

pyRTE-RRTMGP provides a Python interface to the RTE+RRTMGP (https://earth-system-radiation.github.io/rte-rrtmgp/) Fortran software package.

pyRTE-RRTMGP

Robert Pincus, makepath LLC, Josué Miguel Sehnem

pyRTE-RRTMGP provides a Python interface to the RTE+RRTMGP (https://earth-system-radiation.github.io/rte-rrtmgp/) Fortran software package.

How Clear-Sky Spectral Overlap Shapes Radiation in Cloudy Atmospheres

Paulina Czarnecki, Robert Pincus

Abstract Optically thick clouds largely emit thermal radiation at their cloud-top temperature across the longwave spectrum. However, the degree to which cloud-top temperature dominates outgoing longwave radiation depends on how the clouds share spectral space with Earth’s major greenhouse gases. In this …

us (code pays fourni par la source)

Representing subgrid-scale cloud effects in a radiation parameterization using machine learning: MLe-radiation v1.0

Katharina Hafner, Sara Shamekh, Guillaume Bertoli, Axel Lauer et autres

Improvements of Machine Learning (ML)-based radiation emulators remain constrained by the underlying assumptions to represent horizontal and vertical subgrid-scale cloud distributions, which continue to introduce substantial uncertainties. In this study, we introduce a method to represent the impact of subgrid-scale clouds by …

de, us (code pays fourni par la source)

pyRTE-RRTMGP

Robert Pincus, makepath LLC, Josué Miguel Sehnem

pyRTE-RRTMGP provides a Python interface to the RTE+RRTMGP (https://earth-system-radiation.github.io/rte-rrtmgp/) Fortran software package.

Cloud geometry and solar zenith angle control 3D radiative effects

Margaret Powell, Chiel C. van Heerwaarden, Pierre Gentine, Robert Pincus

Most atmospheric models treat radiation as a 1D process, creating biases called 3D radiative effects.Modeled shortwave 3D radiative effects are positive with the sun overhead (i.e., 1D surface flux is artificially dim) and negative when the sun is near the horizon.Using a …

au, us, nl (code pays fourni par la source)

Uncertain Natural Emissions Dampen the Increase in Tropospheric Hydroxyl Radical (OH) With Idealized Surface Warming

Qindan Zhu, N. Neumann, Arlene M. Fiore, Robert Pincus et autres

Abstract The hydroxyl radical (OH) defines the oxidative capacity of the atmosphere and determines the lifetime of reactive greenhouse gases, including methane. The response of OH to climate warming is influenced by uncertain and compensating processes involving meteorological factors and temperature‐sensitive natural …

us (code pays fourni par la source)

Towards provision of regularly updated climate data from the Coupled Model Intercomparison Project

Helene T. Hewitt, Greg Flato, Eleanor O’Rourke, John P. Dunne et autres

The Coupled Model Intercomparison Project (CMIP) is a flagship of the World Climate Research Programme (WCRP). CMIP has become a recognised 'brand' in climate circles evolving over the last 30 years from a targeted research activity by a small number of climate …

gb, ca, us, de, au, Bénin, fr, mx, jp, at (code pays fourni par la source)

Southern Ocean clear-sky brightening caused by wind-driven sea spray aerosol increase

Clare E. Singer, Robert Pincus

Observations reveal significant negative trends in reflected shortwave radiation over the 21st century. The global-mean darkening is primarily driven by clouds, while the global-mean atmospheric clear-sky signal is near zero due to offsetting trends in the two hemispheres. Northern Hemisphere clear-sky darkening …

us (code pays fourni par la source)

An evolving Coupled Model Intercomparison Project phase 7 (CMIP7) and Fast Track in support of future climate assessment

John P. Dunne, Helene T. Hewitt, Julie M. Arblaster, Frédéric Bonou et autres

The Coupled Model Intercomparison Project (CMIP) coordinates community-based efforts to answer key and timely climate science questions, facilitate delivery of relevant multi-model simulations through shared infrastructure, and support national and international climate assessments. Generations of CMIP have evolved through extensive community engagement …

us, gb, au, Bénin, fr, mx, de, jp, at, no (code pays fourni par la source)