Results 41 to 50 of about 16,215 (263)

Impact of ocean data assimilation on climate predictions with ICON-ESM

Climate Dynamics, 2022
Abstract We develop a data assimilation scheme with the Icosahedral Non-hydrostatic Earth System Model (ICON-ESM) for operational decadal and seasonal climate predictions at the German weather service. For this purpose, we implement an Ensemble Kalman Filter to the ocean component as a first step towards a weakly coupled data ...
Holger Pohlmann, Sebastian Brune, Kristina Fröhlich, Johann H Jungclaus, Christine Sgoff, Johanna Baehr   +5 more
openaire   +2 more sources

Decadal Changes of UV Aerosol Optical Depth in Hobart, Australia Measured With a Brewer MKIII: Relationship to Bushfire Events and Climate Indices

International Journal of Climatology, EarlyView.
Monthly average aerosol optical depth at 320 nm obtained with a Brewer MKIII spectrophotometer for Hobart, Australia (42.8806° S, 147.3250° E) over a 21‐year period. There is a linear trend of 15.4% per decade. There are 9 months when the average aerosol optical depth exceeds twice the monthly standard deviation.
Manuel Nuñez, Antonio Serrano, Peter Love, Nels Larson   +3 more
wiley   +1 more source

Assimilation of SMOS Sea Surface Salinity in the Regional Ocean Model for South China Sea

Remote Sensing, 2019
Ocean salinity has an important impact on marine environment simulations. The Soil Moisture and Ocean Salinity (SMOS) mission is the first satellite in the world to provide large-scale global salinity observations of the oceans.
Ziyao Mu, Weimin Zhang, Pinqiang Wang, Huizan Wang, Xiaofeng Yang   +4 more
doaj   +1 more source

Development and Testing of a Clear-Sky Data Selection Algorithm for FY-3C/D Microwave Temperature Sounder-2

Remote Sensing, 2020
The Fengyun (FY)-3C/D microwave temperature sounder-2 (MWTS-2) is similar to the Advanced Microwave Sounding Unit-A (AMSU-A), except it lacks two window channels located at 23.8 GHz and 31.4 GHz.
Zeyi Niu, Xiaolei Zou, Peter Sawin Ray
doaj   +1 more source

Integrating Biogeochemistry and Ecology Into Ocean Data Assimilation Systems [PDF]

Oceanography, 2009
Monitoring and predicting the biogeochemical state of the ocean and marine ecosystems is an important application of operational oceanography that needs to be expanded. The accurate depiction of the ocean’s physical environment enabled by Global Ocean Data Assimilation Experiment (GODAE) systems, in both real-time and reanalysis modes, is already ...
Brasseur, Pierre, Gruber, Nicolas, Barciela, Rosa, Brander, Keith, Doron, Maeva, El Moussaoui, Abdelali, Hobday, Alistair J., Huret, Martin, Kremeur, Anne-sophie, Lehodey, Patrik, Matear, Richard, Moulin, Cyril, Murtugudde, Raghu, Senina, Inna, Svendsen, Einar   +14 more
openaire   +4 more sources

Degradation of Seasonally Frozen Ground in the Three–River Source Region and Its Correlation Impact Within Precipitation–Runoff Process

International Journal of Climatology, EarlyView.
This study reveals how climate change alters the water cycle in the Three Rivers Source region by degrading its important ‘solid groundwater’ (seasonally frozen ground). We found that runoff response varies by watershed and the role of permafrost decreases sharply, making water supply more dependent on rainfall and becoming increasingly vulnerable ...
Chenchen Ren, Xiangde Xu, Jieru Ma, Bingrong Zhou, Na Dong, Wenyue Cai, Chunzhu Wang   +6 more
wiley   +1 more source

Ocean Reanalyses: Recent Advances and Unsolved Challenges

Frontiers in Marine Science, 2019
Ocean reanalyses combine ocean models, atmospheric forcing fluxes, and observations using data assimilation to give a four-dimensional description of the ocean. Metrics assessing their reliability have improved over time, allowing reanalyses to become an
Andrea Storto, Andrea Storto, Aida Alvera-Azcárate, Magdalena A. Balmaseda, Alexander Barth, Matthieu Chevallier, Francois Counillon, Catia M. Domingues, Marie Drevillon, Yann Drillet, Gaël Forget, Gilles Garric, Keith Haines, Keith Haines, Fabrice Hernandez, Fabrice Hernandez, Doroteaciro Iovino, Laura C. Jackson, Jean-Michel Lellouche, Simona Masina, Michael Mayer, Michael Mayer, Peter R. Oke, Stephen G. Penny, K. Andrew Peterson, Chunxue Yang, Hao Zuo   +26 more
doaj   +1 more source

Subseasonal Predictability of Weekly Rainfall and Rainy Season Onset Over East Africa

International Journal of Climatology, EarlyView.
This study evaluates the subseasonal predictability of weekly rainfall and rainy season onset over East Africa using the ECMWF extended range forecast model. Results show strong skill in forecasting weekly rainfall up to 4 weeks ahead, with higher accuracy during the March–May ‘long rains’ season.
Emmah Mwangi, Innocent Masukwedza, Dominic Kniveton, Martin C. Todd   +3 more
wiley   +1 more source

Multi-timescale data assimilation for atmosphere–ocean state estimates [PDF]

Climate of the Past, 2016
Paleoclimate proxy data span seasonal to millennial timescales, and Earth's climate system has both high- and low-frequency components. Yet it is currently unclear how best to incorporate multiple timescales of proxy data into a single reconstruction ...
N. Steiger, G. Hakim
doaj   +1 more source

Nutritional screening within the GLIM procedure—Part 1: Development of a conceptual definition of risk of malnutrition using a modified Delphi procedure

Journal of Parenteral and Enteral Nutrition, EarlyView.
Abstract Background This article presents the results of the modified Delphi study conducted by the GLIM Risk of Malnutrition Working Group to develop a consensus‐based conceptual definition of “risk of malnutrition”, as first step in revising the GLIM screening procedure.
Harriët Jager‐Wittenaar, Martine Sealy, Rocco Barazzoni, Renee Blaauw, Tommy Cederholm, Lee‐anne Chapple, Charlene Compher, M. Isabel T.D. Correia, Ryoji Fukushima, M. Cristina Gonzalez, Gordon L. Jensen, Charles Chin Han Lew, Su Lin Lim, Ainsley Malone, Veeradej Pisprasert, Elisabet Rothenberg, Alison Steiber, Elke Naumann, Marian de van der Schueren   +18 more
wiley   +1 more source