A5066986673- Ocean Waves and Remote Sensing
- Oceanographic and Atmospheric Processes
- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Meteorological Phenomena and Simulations
- Precipitation Measurement and Analysis
- Soil Moisture and Remote Sensing
- Hydrology and Drought Analysis
- Coastal and Marine Dynamics
- Marine and environmental studies
- Marine and fisheries research
National Oceanography Centre
2020-2024
Lawrence Berkeley National Laboratory
2015-2021
Abstract Long‐term changes in ocean surface waves are relevant to society and climate research. Significant wave height climatologies trends over 1992–2017 intercompared four recent high‐quality global datasets using a consistent methodology. For two products based on satellite altimetry, including one from the European Space Agency Climate Change Initiative for Sea State, regional differences mean climatology linked low high sea states. Trends altimetry products, reanalysis hindcast...
Abstract. Sea state data are of major importance for climate studies, marine engineering, safety at sea and coastal management. However, long-term datasets sparse not always consistent, users still mostly rely on numerical wave models research engineering applications. Facing the urgent need a record, Global Climate Observing System has listed “Sea State” as an Essential Variable (ECV), fostering launch in 2018 State Change Initiative (CCI). The CCI is programme European Space Agency, whose...
Abstract This dataset, produced through the Coordinated Ocean Wave Climate Project (COWCLIP) phase 2, represents first coordinated multivariate ensemble of 21 st Century global wind-wave climate projections available (henceforth COWCLIP2.0). COWCLIP2.0 comprises general and extreme statistics significant wave height ( H S ), mean period T m direction θ ) computed over time-slices 1979–2004 2081–2100, at different frequency resolutions (monthly, seasonally annually). The full comprising 155...
Abstract Extreme surface ocean waves are often primary drivers of coastal flooding and erosion over various time scales. Hence, understanding future changes in extreme wave events owing to global warming is socio-economic environmental significance. However, our current knowledge potential high-frequency (defined here as having return periods less than 1 year) largely unknown, despite being strongly linked hazards across scales relevant management. Here, we present climate-modeling evidence,...
Deficiencies in the parameterizations of convection used global climate models often lead to a distorted representation simulated rainfall intensity distribution (i.e., too much from weak rain rates). While encouraging improvements high percentile have been found as horizontal resolution Community Atmosphere Model is increased ∼25 km, we demonstrate no corresponding improvement moderate rates that generate majority accumulated rainfall. Using statistical framework designed emphasize links...
Abstract The effect of forcing wind resolution on the extremes global wind‐wave climate are investigated in numerical simulations. Forcing winds from Community Atmosphere Model at horizontal resolutions ∼1.0° and ∼0.25° used to drive Wavewatch III. Differences extreme wave height found manifest most strongly tropical cyclone (TC) regions, emphasizing need for high‐resolution those areas. Comparison with observations typically show improvement performance increased resolution, a strong...
Measurements of significant wave height from satellite altimeter missions are finding increasing application in investigations climate, sea state variability and trends, particular as the means to mitigate general sparsity situ measurements. However, many questions remain over suitability data for representation extreme states applications coastal zone. In this paper, limitations estimate Hs extremes (<10 km shore) investigated using European Space Agency Sea State Climate Change...
The Copernicus Sentinel-6 Michael Freilich (S6-MF) and Jason-3 (J3) Tandem Experiment (S6-JTEX) provided over 12 months of closely collocated altimeter sea state measurements, acquired in “low-resolution” (LR) synthetic aperture radar “high-resolution” (HR) modes onboard S6-MF. consistency uncertainties associated with these measurements are examined a region the eastern North Pacific. Discrepancies mean significant wave height (Hs, 0.01 m) root-mean-square deviation (0.06 between J3 S6-MF...
Abstract. Sea state data are of major importance for climate studies, marine engineering, safety at sea, and coastal management. However, long-term sea datasets sparse not always consistent, users still mostly rely on numerical wave models research engineering applications. Facing the urgent need a Climate Data Record, Global Observing System has listed State as an Essential Variable (ECV), fostering launch in 2018 Change Initiative (CCI). The CCI is program European Space Agency, whose...
&lt;p&gt;Accurate knowledge and understanding of the sea state its variability is crucial to numerous oceanic coastal engineering applications, but also climate change related impacts including inundation from extreme weather ice-shelf break-up. The increasing duration satellite altimeter record for motivates a range global analyses, examination changes in ocean climate. For surface waves particular, recent development release new products providing observations altimeter-derived...
Author(s): Timmermans, B; Patricola, C; Wehner, M | Abstract: Ocean wave climate is an important area of research, particularly in the context extremes driven by tropical cyclones (TC). We can now simulate global at resolutions sufficient to resolve TCs and for durations long enough explore climatological changes. Both devastating 2017 North Atlantic hurricane season growing evidence connection between TC activity increasing ocean temperature motivate investigation possible future present...
The growing satellite record of sea state observations is becoming increasingly important for climate change research, to improve ocean and weather forecasts inform mitigation investment strategies. In this context, coastal processes impacts are particular concern, driving a yet stronger research imperative. Copernicus Sentinel-6 Michael Freilich (S6-MF) mission was launched in November 2020 by the European Space Agency succeed Jason-3 (J3) as long term altimetry reference mission. S6-MF...
&lt;p&gt;The attribution of extreme weather events, such as heavy rainfall, to anthropogenic influence typically involves the analysis their probability in simulations climate, those conducted C20C+ Detection and Attribution Project. The climate models used however, Community Atmosphere Model (CAM), employ approximate physics that gives rise &amp;#8220;parameter uncertainty&amp;#8221;&amp;#8212;uncertainty about most accurate or optimal values numerical parameters within...
&lt;p&gt;Accurate knowledge and understanding of the sea state its variability is crucial to numerous oceanic coastal engineering applications, but also climate change related impacts including inundation from extreme weather ice-shelf break-up. An increasing duration multi-decadal altimeter observations motivates a range global analyses, examination changes in ocean climate. For surface waves particular, recent development release products providing altimeter-derived significant...
&lt;p&gt;Measurements of significant wave height from satellite altimeter missions are finding increasing application in investigations climate, sea state variability and trends, particular as the means to mitigate general sparsity situ measurements. However, many questions remain over suitability data for representation extreme states applications that examine extremes coastal zone. In this paper, limitations estimate Hs (&lt;10 km shore) investigated using European Space Agency...