Results 1 to 10 of about 234,721 (311)

The relative role of the subsurface Southern Ocean in driving negative Antarctic Sea ice extent anomalies in 2016–2021

Communications Earth & Environment, 2022
Warming of the subsurface Southern Ocean played only a minor role in shrinking Antarctic Sea ice extent in 2016, but was critical for the persistence of negative anomalies between 2016 and 2021, according to coupled climate model simulations partially ...
Liping Zhang, Thomas L. Delworth, Xiaosong Yang, Fanrong Zeng, Feiyu Lu, Yushi Morioka, Mitchell Bushuk   +6 more
doaj   +1 more source

The role of upper-ocean variations of the Kuroshio-Oyashio Extension in seasonal-to-decadal air-sea heat flux variability

npj Climate and Atmospheric Science, 2023
The Kuroshio-Oyashio Extension (KOE) is the North Pacific oceanic frontal zone where air-sea heat and moisture exchanges allow strong communication between the ocean and atmosphere.
Youngji Joh, Thomas L. Delworth, Andrew T. Wittenberg, Xiaosong Yang, Anthony Rosati, Nathaniel C. Johnson, Liwei Jia   +6 more
doaj   +1 more source

Experimental assessment of a blended fatigue‐extreme controller employing trailing edge flaps

Wind Energy, 2023
This paper presents an experimental assessment of a blended fatigue‐extreme controller for load control employing trailing edge flaps on a lab‐scale wind turbine. The controller blends between a repetitive model predictive controller that targets fatigue
Sirko Bartholomay, Sascha Krumbein, Sebastian Perez‐Becker, Rodrigo Soto‐Valle, Christian N. Nayeri, Christian O. Paschereit, Kilian Oberleithner   +6 more
doaj   +1 more source

Repetitive model predictive control for load alleviation on a research wind turbine using trailing edge flaps

Wind Energy, 2022
Summary This paper presents the results of an advanced control strategy that employs active trailing edge flaps to reduce the fatigue loads of an experimental wind turbine.
Sirko Bartholomay, Sascha Krumbein, Victoria Deichmann, Maik Gentsch, Sebastian Perez‐Becker, Rodrigo Soto‐Valle, David Holst, Christian N. Nayeri, Christian O. Paschereit, Kilian Oberleithner   +9 more
doaj   +1 more source

Skillful multiyear to decadal predictions of sea level in the North Atlantic Ocean and U.S. East Coast

Communications Earth & Environment, 2023
Long-term sea-level rise and multiyear to decadal sea level variations pose substantial risks for flooding and erosion in coastal communities. Here we use observations and climate model predictions to show that sea level variations along the U.S.
Liping Zhang, Thomas L. Delworth, Xiaosong Yang, Fanrong Zeng   +3 more
doaj   +1 more source

Stronger decadal variability of the Kuroshio Extension under simulated future climate change

npj Climate and Atmospheric Science, 2022
Understanding the behavior of western boundary current systems is crucial for predictions of biogeochemical cycles, fisheries, and basin-scale climate modes over the midlatitude oceans.
Youngji Joh, Thomas L. Delworth, Andrew T. Wittenberg, William F. Cooke, Anthony J. Rosati, Liping Zhang   +5 more
doaj   +1 more source

SPEAR: The Next Generation GFDL Modeling System for Seasonal to Multidecadal Prediction and Projection

Journal of Advances in Modeling Earth Systems, 2020
We document the development and simulation characteristics of the next generation modeling system for seasonal to decadal prediction and projection at the Geophysical Fluid Dynamics Laboratory (GFDL).
Thomas L. Delworth, William F. Cooke, Alistair Adcroft, Mitchell Bushuk, Jan‐Huey Chen, Krista A. Dunne, Paul Ginoux, Richard Gudgel, Robert W. Hallberg, Lucas Harris, Matthew J. Harrison, Nathaniel Johnson, Sarah B. Kapnick, Shian‐Jian Lin, Feiyu Lu, Sergey Malyshev, Paul C. Milly, Hiroyuki Murakami, Vaishali Naik, Salvatore Pascale, David Paynter, Anthony Rosati, M.D. Schwarzkopf, Elena Shevliakova, Seth Underwood, Andrew T. Wittenberg, Baoqiang Xiang, Xiaosong Yang, Fanrong Zeng, Honghai Zhang, Liping Zhang, Ming Zhao   +31 more
doaj   +1 more source

Two‐Moment Bulk Cloud Microphysics With Prognostic Precipitation in GFDL's Atmosphere Model AM4.0: Configuration and Performance

Journal of Advances in Modeling Earth Systems, 2021
A two‐moment Morrison‐Gettelman bulk cloud microphysics with prognostic precipitation (MG2), together with a mineral dust and temperature‐dependent ice nucleation scheme, have been implemented into the Geophysical Fluid Dynamics Laboratory's Atmosphere ...
Huan Guo, Yi Ming, Songmiao Fan, Linjiong Zhou, Lucas Harris, Ming Zhao   +5 more
doaj   +1 more source

GFDL SHiELD: A Unified System for Weather‐to‐Seasonal Prediction

Journal of Advances in Modeling Earth Systems, 2020
We present the System for High‐resolution prediction on Earth‐to‐Local Domains (SHiELD), an atmosphere model developed by the Geophysical Fluid Dynamics Laboratory (GFDL) coupling the nonhydrostatic FV3 Dynamical Core to a physics suite originally taken ...
Lucas Harris, Linjiong Zhou, Shian‐Jiann Lin, Jan‐Huey Chen, Xi Chen, Kun Gao, Matthew Morin, Shannon Rees, Yongqiang Sun, Mingjing Tong, Baoqiang Xiang, Morris Bender, Rusty Benson, Kai‐Yuan Cheng, Spencer Clark, Oliver D. Elbert, Andrew Hazelton, J. Jacob Huff, Alex Kaltenbaugh, Zhi Liang, Timothy Marchok, Hyeyum Hailey Shin, William Stern   +22 more
doaj   +1 more source

Experimental Oxygen Mass Transfer Study of Micro-Perforated Diffusers

Energies, 2021
We studied new micro-perforated diffuser concepts for the aeration process in wastewater treatment plants and evaluated their aeration efficiency. These are micro-perforated plate diffusers with orifice diameters of 30 µm, 50 µm and 70 µm and a micro ...
Robert Herrmann-Heber, Florian Ristau, Ehsan Mohseni, Sebastian Felix Reinecke, Uwe Hampel   +4 more
doaj   +1 more source