Article
Oceanography
Neill Mackay, Andrew Watson
Summary: In the Southern Ocean south of the Polar Front, utilizing summertime observations to reconstruct wintertime pCO2surf greatly improved coverage and enhanced accuracy of flux estimates. The addition of pseudo observations initially increased outgassing, which gradually decreased over time.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Zhixiong Wang, Juhong Zou, Youguang Zhang, Ad Stoffelen, Wenming Lin, Yijun He, Qian Feng, Yi Zhang, Bo Mu, Mingsen Lin
Summary: This study compared and validated the backscatter measurements of the HY-2 series scatterometers using three methods of intercalibration, showing that the results obtained from these methods are comparable with differences within 0.1 dB.
Article
Environmental Sciences
Alexey Nekrasov, Alena Khachaturian, Colin Fidge
Summary: In this study, the effectiveness of a semicircular sampling scheme for wind retrieval was evaluated using Monte Carlo simulations. The results showed that the semicircular scheme provided comparable wind retrieval accuracy to the conventional circular scheme, while allowing for a maximum altitude of wind retrieval twice that of the circular scheme. Additionally, the simultaneous use of multiple incidence angle sampling schemes improved the wind retrieval accuracy.
Article
Environmental Sciences
Jinsong Lin, Yanfeng Wang, Haidong Pan, Zexun Wei, Tengfei Xu
Summary: Air-sea heat flux is crucial for ocean circulation, weather, and climate. Satellite remote sensing, particularly the Cyclone Global Navigation Satellite System (CYGNSS), is used to estimate turbulent heat fluxes. High uncertainty is found near the equator in the western Pacific Ocean, Arabian Sea, Bay of Bengal, and Gulf of Guinea.
Article
Multidisciplinary Sciences
Simon A. Josey, Jeremy P. Grist, Jennifer V. Mecking, Ben I. Moat, Eric Schulz
Summary: This article discusses progress in understanding Southern Ocean heat exchange and wind forcing, and presents new results. It introduces a metric of the zonal asymmetry between surface ocean heat gain in the Atlantic/Indian sector and heat loss in the Pacific sector. The article also explores the potential for surface flux buoys to provide observation-based data for the asymmetry metric.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Engineering, Electrical & Electronic
Weicheng Ni, Ad Stoffelen, Kaijun Ren, Xiaofeng Yang
Summary: Spaceborne microwave sensors are widely used for tropical cyclone monitoring, but there are still challenges in obtaining accurate intensity estimates due to issues such as blurred inner-core structures and limited spatial-temporal coverage. This study proposes a new technique to overcome these challenges and provides more accurate TC intensity estimates from scatterometer data.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2022)
Article
Environmental Sciences
Alexey Nekrasov, Alena Khachaturian
Summary: The study extends the applicability of existing airborne radars through radar technology, evaluating the sea surface wind measurement capability by comparing the backscatter with the geophysical model function. The study also takes into account the partial shading of the water surface by the aircraft. The results show promise for the development of new remote sensing systems and functional enhancement of existing airborne radars.
Article
Engineering, Marine
Francesco De Biasio, Stefano Zecchetto
Summary: In this paper, the authors aim to improve the accuracy of sea level and storm surge predictions in the Adriatic Sea by mitigating the wind bias in the sea surface wind forecasts. They propose seven new expressions of the wind bias mitigation factor based on scatterometer wind observations. Statistical analysis shows that some of these new formulations are able to reduce the bias between the model wind and scatterometer wind, resulting in an 11% improvement compared to the original formulation. The best performing formulation, based on linear least square regression of the squared wind speed, has been implemented in the operational sea level forecast chain to support the operation of the MO.SE. barriers in Venice.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Analytical
Alexey Nekrasov, Alena Khachaturian, Evgenii Vorobev
Summary: This study investigates the possibility of using an airborne rotating-beam scatterometer for wind vector measurement and explores the sampling of normalized radar cross-section (NRCS) at different incidence angles. The results show that using multiple neighboring incidence angles can improve the accuracy of wind vector measurement, with the lowest wind speed and direction errors achieved in the range of 45 to 60 degrees incidence angles.
Article
Environmental Sciences
Xuetong Xie, Jing Wang, Mingsen Lin
Summary: In order to improve the wind speed retrieval accuracy of the HY-2A scatterometer under high wind conditions, a new high wind GMF (HW-GMF) is established using a neural network method. Experimental results show that the HW-GMF significantly improves the precision of wind speed inversion under high wind speed conditions.
Article
Environmental Sciences
Yueqi Zhang, Zhaohui Chen
Summary: The cool skin effect, where the ocean's surface skin temperature is slightly cooler than the water directly underneath, plays a critical role in heat, momentum, and gas exchange between the air and sea. This study used Himawari-8 satellite data and in situ sea surface temperature observations to evaluate the performance and dependence of the cool skin effect in low/mid-latitude oceans. The results showed a weaker cool skin effect than previously modeled, with warm skin signals detected in high-latitude oceans.
Article
Limnology
Yuting HAN, Yangang LI, Changsan XU, Lei LIU, Yanling ZHAO, Wenqing LI, Xiangzhou SONG
Summary: This study analyzed the full fluxes and associated air-sea variables in the East China Sea during summer 2020 using operational buoy observations. The results showed that solar shortwave radiation and latent heat fluxes were the main factors affecting surface net heat flux. The comparison of four reanalysis datasets with buoy data revealed that shortwave radiation was well simulated, while latent heat flux was poorly simulated. High wind speeds were identified as the main cause of differences in turbulent flux. The study also found that re-calculating sensible heat flux and latent heat flux using reanalysis data and the Coupled Ocean-Atmospheric Response Experiment (COARE 3.0) bulk formulas provided results closer to observed heat fluxes than direct model outputs.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2022)
Article
Geochemistry & Geophysics
Ke Zhao, Ad Stoffelen, Jeroen Verspeek, Anton Verhoef, Chaofang Zhao
Summary: Satellite scatterometer wind retrieval is influenced by rain, and current geophysical model functions (GMFs) do not consider the effect of rain on wind field retrieval. The usual method to avoid rain effects is to flag rain-contaminated data in the quality control procedure. However, accurate wind and rain retrieval is important in extreme weather events. Therefore, a conceptual model is proposed to describe the relationship between Ku-band scatterometer-measured biases and sea surface wind-induced biases and rain rates (RRs).
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Environmental Sciences
Francis Joseph Turk, Svetla Hristova-Veleva, Donata Giglio
Summary: The study explores the variability of diurnal wind direction in tropical regions, generating a multi-year dataset by merging different satellite data. It finds that there are different degrees of variations in the zonal and meridional wind components in the tropical Pacific, possibly due to interactions between surface convergence and convective precipitation in ocean basins.
Article
Geosciences, Multidisciplinary
David H. Richter, Charlotte E. Wainwright
Summary: The exchange of enthalpy and momentum at the air-sea interface plays a crucial role in tropical cyclone (TC) development and intensification. The impact of sea spray, particularly at high wind speeds, has been uncertain. In this study, we conducted high-resolution simulations of a spray-laden TC boundary layer using a coupled large-eddy simulation and Lagrangian cloud model. Our results show that spray droplets have no effect on C-D at wind speeds up to 48 m/s. C-E and C-H are modified initially but quickly relax back to their unladen values due to surface layer saturation, with faster relaxation at higher wind speeds.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Engineering, Ocean
Jamie D. Shutler, Peter E. Land, Jean-Francois Piolle, David K. Woolf, Lonneke Goddijn-Murphy, Frederic Paul, Fanny Girard-Ardhuin, Bertrand Chapron, Craig J. Donlon
JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY
(2016)
Article
Geography, Physical
Jamie D. Shutler, Graham D. Quartly, Craig J. Donlon, Shubha Sathyendranath, Trevor Platt, Bertrand Chapron, Johnny A. Johannessen, Fanny Girard-Ardhuin, Philip D. Nightingale, David K. Woolf, Jacob L. Hoyer
PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT
(2016)
Article
Oceanography
Lonneke Goddijn-Murphy, David K. Woolf, Adrian H. Callaghan, Philip D. Nightingale, Jamie D. Shutler
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2016)
Article
Oceanography
D. K. Woolf, P. E. Land, J. D. Shutler, L. M. Goddijn-Murphy, C. J. Donlon
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2016)
Article
Multidisciplinary Sciences
Timothy G. Leighton, David G. H. Coles, Meric Srokosz, Paul R. White, David K. Woolf
SCIENTIFIC REPORTS
(2018)
Article
Multidisciplinary Sciences
I. G. Ashton, J. D. Shutler, P. E. Land, D. K. Woolf, G. D. Quartly
Article
Environmental Sciences
D. K. Woolf, J. D. Shutler, L. Goddijn-Murphy, A. J. Watson, B. Chapron, P. D. Nightingale, C. J. Donlon, J. Piskozub, M. J. Yelland, I Ashton, T. Holding, U. Schuster, F. Girard-Ardhuin, A. Grouazel, J-F Piolle, M. Warren, I Wrobel-Niedzwiecka, P. E. Land, R. Torres, J. Prytherch, B. Moat, J. Hanafin, F. Ardhuin, F. Paul
GLOBAL BIOGEOCHEMICAL CYCLES
(2019)
Review
Ecology
Jamie D. Shutler, Rik Wanninkhof, Philip D. Nightingale, David K. Woolf, Dorothee C. E. Bakker, Andy Watson, Ian Ashton, Thomas Holding, Bertrand Chapron, Yves Quilfen, Chris Fairall, Ute Schuster, Masakatsu Nakajima, Craig J. Donlon
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT
(2020)
Article
Multidisciplinary Sciences
Andrew J. Watson, Ute Schuster, Jamie D. Shutler, Thomas Holding, Ian G. C. Ashton, Peter Landschuetzer, David K. Woolf, Lonneke Goddijn-Murphy
NATURE COMMUNICATIONS
(2020)
Article
Thermodynamics
Mohammed A. Almoghayer, David K. Woolf, Sandy Kerr, Gareth Davies
Summary: Integrating renewable energy into island energy systems can provide diversity of energy supply and improved system efficiency, potentially yielding cheaper energy for island communities. This paper investigates the most cost-effective method to integrate tidal energy into the Orkney energy system and explores various approaches to achieving efficient energy extraction.
Article
Meteorology & Atmospheric Sciences
Thomas Holding, Ian G. Ashton, Jamie D. Shutler, Peter E. Land, Philip D. Nightingale, Andrew P. Rees, Ian Brown, Jean-Francois Piolle, Annette Kock, Hermann W. Bange, David K. Woolf, Lonneke Goddijn-Murphy, Ryan Pereira, Frederic Paul, Fanny Girand-Ardhuin, Bertrand Chapron, Gregor Rehder, Fabrice Ardhuin, Craig J. Donlon
Article
Environmental Studies
S. Waldman, S. Weir, R. B. O'Hara Murray, D. K. Woolf, S. Kerr
Review
Environmental Sciences
Christine Gommenginger, Bertrand Chapron, Andy Hogg, Christian Buckingham, Baylor Fox-Kemper, Leif Eriksson, Francois Soulat, Clement Ubelmann, Francisco Ocampo-Torres, Bruno Buongiorno Nardelli, David Griffin, Paco Lopez-Dekker, Per Knudsen, Ole Andersen, Lars Stenseng, Neil Stapleton, William Perrie, Nelson Violante-Carvalho, Johannes Schulz-Stellenfleth, David Woolf, Jordi Isern-Fontanet, Fabrice Ardhuin, Patrice Klein, Alexis Mouche, Ananda Pascual, Xavier Capet, Daniele Hauser, Ad Stoffelen, Rosemary Morrow, Lotfi Aouf, Oyvind Breivik, Lee-Lueng Fu, Johnny A. Johannessen, Yevgeny Aksenov, Lucy Bricheno, Joel Hirschi, Adrien C. H. Martin, Adrian P. Martin, George Nurser, Jeff Polton, Judith Wolf, Harald Johnsens, Alexander Soloviev, Gregg A. Jacobs, Fabrice Collard, Steve Groom, Vladimir Kudryavtsev, John Wilkin, Victor Navarro, Alex Babanin, Matthew Martin, John Siddorn, Andrew Saulter, Tom Rippeth, Bill Emery, Nikolai Maximenko, Roland Romeiser, Hans Graber, Aida Alvera Azcarate, Chris W. Hughes, Doug Vandemark, Jose da Silva, Peter Jan Van Leeuwen, Alberto Naveira-Garabato, Johannes Gemmrich, Amala Mahadevan, Jose Marquez, Yvonne Munro, Sam Doody, Geoff Burbidge
FRONTIERS IN MARINE SCIENCE
(2019)
Article
Energy & Fuels
S. Waldman, S. Yamaguchi, R. O'Hara Murray, D. Woolf
INTERNATIONAL JOURNAL OF MARINE ENERGY
(2017)
Article
Green & Sustainable Science & Technology
Simon P. Neill, Arne Vogler, Alice J. Goward-Brown, Susana Baston, Matthew J. Lewis, Philip A. Gillibrand, Simon Waldman, David K. Woolf