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LARGE ENSEMBLE WORKING GROUP The US CLIVAR Working Group on Large “Initial-Condition” Earth System Model Ensembles (LEs) was formed in March 2018. The intent of the working group is to spearhead a dedicated effort across the national and international climate communities to advance progress on identifying anthropogenic influences on weather and climate amidst the “noise” of internal variability.AMOC TIME SERIES
This website lists available AMOC time series of transports and fluxes derived from instrument arrays. While the quality-controlled raw data collected from the individual instruments is commonly submitted to data repositories such as OceanSites or the World Ocean Data Base, there is no collection site for AMOC time series products. TROPICAL CYCLONE THEORY CLIVAR TOWN HALL & SESSIONS AT 2020 OCEAN SCIENCES MEETING The 2020 Ocean Sciences Meeting will be held February 16-21 in San Diego, California. We have started to put together a list of US CLIVAR-sponsored sessions along with Town Halls, events, workshops, and other sessions that may be of interested to the US CLIVARcommunity.
PREDICTABILITY, PREDICTIONS, AND APPLICATIONS INTERFACE The Predictability, Predictions, and Applications Interface (PPAI) Panel's mission is to foster improved practices in the provision, validation and uses of climate information and forecasts through coordinated participation within the US and international climate science and applications communities. FEEDBACKS BETWEEN THE AMOC AND THE CARBON CYCLE: A PRESENT Two major aspects of marine carbon cycle research owe their origins to beer - the first, is the transfer of carbon dioxide into water - the second relates to how we measure the IMPACTS OF THE ATLANTIC WARM POOL ON ATLANTIC HURRICANES Impacts of the Atlantic Warm Pool on Atlantic Hurricanes Chunzai Wang NOAA/AOML Miami, Florida CLIVAR IASCLIP Workshop September 10, 2015 Collaborators: Sang-Ki Lee (CIMAS & AOML), David Enfield (CIMAS & WELCOME TO THE US CLIMATE VARIABILITY AND PREDICTABILITYABOUTSCIENCEUS AMOCNEWS & PUBLICATIONSCALENDAR & MEETINGSGET INVOLVED Building a Community of Biogeochemical Float Data Users: The GO-BGC array is a 5-year effort funded by NSF to deploy 500 profiling floats eqiupped with biogeochemical sensors in the world ocean. To inform and engage a broad oceanographic user community, US CLIVAR is teaming up with OCB and GO-BGC leadership to plan a virtual workshop from June DATA SCIENCE WORKING GROUP The US CLIVAR Working Group on Emerging Data Science Tools for Climate Variability and Predictability was formed in September 2019. The purpose of the Working Group is to help foster the understanding, adoption, and further the development of modern data science tools for the analysis of large-to-massive climate data sets. TASK TEAM 5: PALEO AMOC Task Team 5: Paleo AMOC. The team is charged with fostering collaborative relationships to facilitate cross-disciplinary learning and understanding among paleo scientists with the modern AMOC community. The team will focus on the variability of AMOC through the last two millennia and on AMOC-related events of the last glacialcycle, a period
LARGE ENSEMBLE WORKING GROUP The US CLIVAR Working Group on Large “Initial-Condition” Earth System Model Ensembles (LEs) was formed in March 2018. The intent of the working group is to spearhead a dedicated effort across the national and international climate communities to advance progress on identifying anthropogenic influences on weather and climate amidst the “noise” of internal variability.AMOC TIME SERIES
This website lists available AMOC time series of transports and fluxes derived from instrument arrays. While the quality-controlled raw data collected from the individual instruments is commonly submitted to data repositories such as OceanSites or the World Ocean Data Base, there is no collection site for AMOC time series products. TROPICAL CYCLONE THEORY CLIVAR TOWN HALL & SESSIONS AT 2020 OCEAN SCIENCES MEETING The 2020 Ocean Sciences Meeting will be held February 16-21 in San Diego, California. We have started to put together a list of US CLIVAR-sponsored sessions along with Town Halls, events, workshops, and other sessions that may be of interested to the US CLIVARcommunity.
PREDICTABILITY, PREDICTIONS, AND APPLICATIONS INTERFACE The Predictability, Predictions, and Applications Interface (PPAI) Panel's mission is to foster improved practices in the provision, validation and uses of climate information and forecasts through coordinated participation within the US and international climate science and applications communities. FEEDBACKS BETWEEN THE AMOC AND THE CARBON CYCLE: A PRESENT Two major aspects of marine carbon cycle research owe their origins to beer - the first, is the transfer of carbon dioxide into water - the second relates to how we measure the IMPACTS OF THE ATLANTIC WARM POOL ON ATLANTIC HURRICANES Impacts of the Atlantic Warm Pool on Atlantic Hurricanes Chunzai Wang NOAA/AOML Miami, Florida CLIVAR IASCLIP Workshop September 10, 2015 Collaborators: Sang-Ki Lee (CIMAS & AOML), David Enfield (CIMAS & LARGE ENSEMBLE WORKING GROUP The US CLIVAR Working Group on Large “Initial-Condition” Earth System Model Ensembles (LEs) was formed in March 2018. The intent of the working group is to spearhead a dedicated effort across the national and international climate communities to advance progress on identifying anthropogenic influences on weather and climate amidst the “noise” of internal variability. PHENOMENA, OBSERVATIONS, AND SYNTHESIS PANEL Phenomena, Observations, and Synthesis Panel. The Phenomena, Observations, and Synthesis Panel's (POS) mission is to improve understanding of climate variations in the past, present, and future, and to develop syntheses of critical climate parameters while sustaining and improving the global climate observing system.AMOC TIME SERIES
This website lists available AMOC time series of transports and fluxes derived from instrument arrays. While the quality-controlled raw data collected from the individual instruments is commonly submitted to data repositories such as OceanSites or the World Ocean Data Base, there is no collection site for AMOC time series products. CLIMATE PROCESS TEAMS For a decade and a half, US CLIVAR has promoted the concept of Climate Process Teams (CPTs). CPTs improve the fidelity of coupled climate models by facilitating the transfer of knowledge from observational and process-oriented research to the development of physical process representation in component ocean or atmosphere global climate models(GCMs).
INFLUENCES OF THE MJO ON ENSO Seasonal mean MJO activity tends to lead ENSO SST by 6 – 12 months (Zhang and Gottschalck 2002). Their strongest lag correlation occurs between the MJO in boreal spring and ENSO SST in winter. Theories have predicted that the most optimal spatial structure of stochastic forcing of ENSO is similar to that of the MJO (Moore and Kleeman1999).
EXTREME SEA LEVEL RISE EVENT LINKED TO AMOC DOWNTURN In a recent paper, Goddard and colleagues show that this extreme sea-level rise event was a combined effect of two physical factors. First, it was partly due to an observed 30% downturn of the Atlantic meridional overturning circulation (AMOC) during 2009-2010. This AMOC slowdown caused significant short-term changes in ocean temperaturesand
ROLE OF OCEANIC HEAT IN SEA ICE LOSS IN THE NEW ARCTIC The retreat and thinning of the summer sea ice are the most visible indicators of the major physical changes underway in the Arctic Ocean. While rates and even causes of ice loss remain under debate, further loss of sea ice will open the ocean to stronger atmospheric forcing and accelerate ongoing feedback processes. FUTURE CHANGES IN OCEAN CURRENTS AROUND FLORIDA IMPACT Future changes in ocean currents around Florida impact rainfall over land. August 10, 2016. The difference in the climatological mean June-July-August ocean heat content as measured by the depth of the 20°C isotherm (in meters) overlaid with corresponding differences in ocean heat transport vectors (W/m) between two numerical climatemodels
THE TWO TYPES OF ENSO The Two Types of ENSO Central-Pacific El Niño (related to atmospheric forcing) Eastern-Pacific El Niño (related to thermocline variation) (Yu and Kao 2007; Kao and Yu 2009) SCOTT HARPER PROGRAM OFFICER, ONR CODE 322 OCEAN Scott Harper Program Officer, ONR Code 322 Ocean, Atmosphere and Space Research Division November 30, 2009 WELCOME TO THE US CLIMATE VARIABILITY AND PREDICTABILITYABOUTSCIENCEUS AMOCNEWS & PUBLICATIONSCALENDAR & MEETINGSGET INVOLVED Building a Community of Biogeochemical Float Data Users: The GO-BGC array is a 5-year effort funded by NSF to deploy 500 profiling floats eqiupped with biogeochemical sensors in the world ocean. To inform and engage a broad oceanographic user community, US CLIVAR is teaming up with OCB and GO-BGC leadership to plan a virtual workshop from June DATA SCIENCE WORKING GROUP The US CLIVAR Working Group on Emerging Data Science Tools for Climate Variability and Predictability was formed in September 2019. The purpose of the Working Group is to help foster the understanding, adoption, and further the development of modern data science tools for the analysis of large-to-massive climate data sets. TASK TEAM 5: PALEO AMOC Task Team 5: Paleo AMOC. The team is charged with fostering collaborative relationships to facilitate cross-disciplinary learning and understanding among paleo scientists with the modern AMOC community. The team will focus on the variability of AMOC through the last two millennia and on AMOC-related events of the last glacialcycle, a period
LARGE ENSEMBLE WORKING GROUP The US CLIVAR Working Group on Large “Initial-Condition” Earth System Model Ensembles (LEs) was formed in March 2018. The intent of the working group is to spearhead a dedicated effort across the national and international climate communities to advance progress on identifying anthropogenic influences on weather and climate amidst the “noise” of internal variability. TROPICAL CYCLONE THEORYAMOC TIME SERIES
This website lists available AMOC time series of transports and fluxes derived from instrument arrays. While the quality-controlled raw data collected from the individual instruments is commonly submitted to data repositories such as OceanSites or the World Ocean Data Base, there is no collection site for AMOC time series products. CLIVAR TOWN HALL & SESSIONS AT 2020 OCEAN SCIENCES MEETING The 2020 Ocean Sciences Meeting will be held February 16-21 in San Diego, California. We have started to put together a list of US CLIVAR-sponsored sessions along with Town Halls, events, workshops, and other sessions that may be of interested to the US CLIVARcommunity.
PREDICTABILITY, PREDICTIONS, AND APPLICATIONS INTERFACE The Predictability, Predictions, and Applications Interface (PPAI) Panel's mission is to foster improved practices in the provision, validation and uses of climate information and forecasts through coordinated participation within the US and international climate science and applications communities. FEEDBACKS BETWEEN THE AMOC AND THE CARBON CYCLE: A PRESENT Two major aspects of marine carbon cycle research owe their origins to beer - the first, is the transfer of carbon dioxide into water - the second relates to how we measure the IMPACTS OF THE ATLANTIC WARM POOL ON ATLANTIC HURRICANES Impacts of the Atlantic Warm Pool on Atlantic Hurricanes Chunzai Wang NOAA/AOML Miami, Florida CLIVAR IASCLIP Workshop September 10, 2015 Collaborators: Sang-Ki Lee (CIMAS & AOML), David Enfield (CIMAS & WELCOME TO THE US CLIMATE VARIABILITY AND PREDICTABILITYABOUTSCIENCEUS AMOCNEWS & PUBLICATIONSCALENDAR & MEETINGSGET INVOLVED Building a Community of Biogeochemical Float Data Users: The GO-BGC array is a 5-year effort funded by NSF to deploy 500 profiling floats eqiupped with biogeochemical sensors in the world ocean. To inform and engage a broad oceanographic user community, US CLIVAR is teaming up with OCB and GO-BGC leadership to plan a virtual workshop from June DATA SCIENCE WORKING GROUP The US CLIVAR Working Group on Emerging Data Science Tools for Climate Variability and Predictability was formed in September 2019. The purpose of the Working Group is to help foster the understanding, adoption, and further the development of modern data science tools for the analysis of large-to-massive climate data sets. TASK TEAM 5: PALEO AMOC Task Team 5: Paleo AMOC. The team is charged with fostering collaborative relationships to facilitate cross-disciplinary learning and understanding among paleo scientists with the modern AMOC community. The team will focus on the variability of AMOC through the last two millennia and on AMOC-related events of the last glacialcycle, a period
LARGE ENSEMBLE WORKING GROUP The US CLIVAR Working Group on Large “Initial-Condition” Earth System Model Ensembles (LEs) was formed in March 2018. The intent of the working group is to spearhead a dedicated effort across the national and international climate communities to advance progress on identifying anthropogenic influences on weather and climate amidst the “noise” of internal variability. TROPICAL CYCLONE THEORYAMOC TIME SERIES
This website lists available AMOC time series of transports and fluxes derived from instrument arrays. While the quality-controlled raw data collected from the individual instruments is commonly submitted to data repositories such as OceanSites or the World Ocean Data Base, there is no collection site for AMOC time series products. CLIVAR TOWN HALL & SESSIONS AT 2020 OCEAN SCIENCES MEETING The 2020 Ocean Sciences Meeting will be held February 16-21 in San Diego, California. We have started to put together a list of US CLIVAR-sponsored sessions along with Town Halls, events, workshops, and other sessions that may be of interested to the US CLIVARcommunity.
PREDICTABILITY, PREDICTIONS, AND APPLICATIONS INTERFACE The Predictability, Predictions, and Applications Interface (PPAI) Panel's mission is to foster improved practices in the provision, validation and uses of climate information and forecasts through coordinated participation within the US and international climate science and applications communities. FEEDBACKS BETWEEN THE AMOC AND THE CARBON CYCLE: A PRESENT Two major aspects of marine carbon cycle research owe their origins to beer - the first, is the transfer of carbon dioxide into water - the second relates to how we measure the IMPACTS OF THE ATLANTIC WARM POOL ON ATLANTIC HURRICANES Impacts of the Atlantic Warm Pool on Atlantic Hurricanes Chunzai Wang NOAA/AOML Miami, Florida CLIVAR IASCLIP Workshop September 10, 2015 Collaborators: Sang-Ki Lee (CIMAS & AOML), David Enfield (CIMAS & WELCOME TO THE US CLIMATE VARIABILITY AND PREDICTABILITY A new study by Wu and co-authors shows that the duration of individual ENSO events during 1954-2015 can be predicted up to two years in advance using a suite of multiyear retrospective forecasts conducted with the Community Earth System Model version 1, a climate model that well simulates the statistical and dynamical features of the temporal evolution of ENSO events. WEBINARS | US CLIVAR US CLIVAR Process Studies Webinar Series. The Process Studies Webinar Series aims to provide feedback on recent, ongoing, and planned US-funded process studies. This webinar series, hosted by the Process Studies and Model Improvement Panel, will feature two presenters from each process study (one observationalist, one modeler). The webinarsare
AMOC TIME SERIES
This website lists available AMOC time series of transports and fluxes derived from instrument arrays. While the quality-controlled raw data collected from the individual instruments is commonly submitted to data repositories such as OceanSites or the World Ocean Data Base, there is no collection site for AMOC time series products. CLIMATE PROCESS TEAMS For a decade and a half, US CLIVAR has promoted the concept of Climate Process Teams (CPTs). CPTs improve the fidelity of coupled climate models by facilitating the transfer of knowledge from observational and process-oriented research to the development of physical process representation in component ocean or atmosphere global climate models(GCMs).
TROPICAL PACIFIC OBSERVING NEEDS TO ADVANCE PROCESS Schedule. Monday, May 24, 2021 14:00 - 18:00 EDT. Tuesday, May 25, 2021 14:00 - 18:00 EDT. Wednesday, May 26, 2021 14:00 - 19:00 EDT. Times are in Eastern Daylight INFLUENCES OF THE MJO ON ENSO Seasonal mean MJO activity tends to lead ENSO SST by 6 – 12 months (Zhang and Gottschalck 2002). Their strongest lag correlation occurs between the MJO in boreal spring and ENSO SST in winter. Theories have predicted that the most optimal spatial structure of stochastic forcing of ENSO is similar to that of the MJO (Moore and Kleeman1999).
EXTREME SEA LEVEL RISE EVENT LINKED TO AMOC DOWNTURN In a recent paper, Goddard and colleagues show that this extreme sea-level rise event was a combined effect of two physical factors. First, it was partly due to an observed 30% downturn of the Atlantic meridional overturning circulation (AMOC) during 2009-2010. This AMOC slowdown caused significant short-term changes in ocean temperaturesand
ROLE OF OCEANIC HEAT IN SEA ICE LOSS IN THE NEW ARCTIC The retreat and thinning of the summer sea ice are the most visible indicators of the major physical changes underway in the Arctic Ocean. While rates and even causes of ice loss remain under debate, further loss of sea ice will open the ocean to stronger atmospheric forcing and accelerate ongoing feedback processes.WARMING HIATUS
June 18, 2015. Much study has been devoted to the possible causes of a decrease in the upward trend of global surface temperatures since 1998, a phenomenon that has been dubbed the global warming “hiatus.”. However, a new study by Karl et al. has called into question the underlying data used to detect the “hiatus”. Warminghiatus may be
THE TWO TYPES OF ENSO The Two Types of ENSO Central-Pacific El Niño (related to atmospheric forcing) Eastern-Pacific El Niño (related to thermocline variation) (Yu and Kao 2007; Kao and Yu 2009) WELCOME TO THE US CLIMATE VARIABILITY AND PREDICTABILITYABOUTSCIENCEUS AMOCNEWS & PUBLICATIONSCALENDAR & MEETINGSGET INVOLVED A new study by Wu and co-authors shows that the duration of individual ENSO events during 1954-2015 can be predicted up to two years in advance using a suite of multiyear retrospective forecasts conducted with the Community Earth System Model version 1, a climate model that well simulates the statistical and dynamical features of the temporal evolution of ENSO events. TASK TEAM 5: PALEO AMOC The team is charged with fostering collaborative relationships to facilitate cross-disciplinary learning and understanding among paleo scientists with the modern AMOC community. PHENOMENA, OBSERVATIONS, AND SYNTHESIS PANEL The Phenomena, Observations, and Synthesis Panel's (POS) mission is to improve understanding of climate variations in the past, present, and future, and to develop syntheses of critical climate parameters while sustaining and improving the global climate observing system. THE US ATLANTIC MERIDIONAL OVERTURNING CIRCULATION PROGRAMATLANTIC MERIDIONAL OVERTURNING CIRCULATION …THE ATLANTIC CIRCULATIONGLOBAL OCEAN MERIDIONAL OVERTURNINGAMOC CIRCULATIONAMO ATLANTICATLANTIC MULTIDECADAL OSCILLATION The US AMOC Program, now in its ninth year, was developed as a US interagency program to increase understanding of the Atlantic Meridional Overturning Circulation in response to the fourth near-term priority of the SOST Ocean Research Priorities Plan.The purpose of the program is to bring together researchers studying the AMOC and to build partnerships among modeling and observational groups PROCESS STUDY AND MODEL IMPROVEMENT PANEL The Process Study and Model Improvement (PSMI) Panel's mission is to reduce uncertainties in the general circulation models used for climate variability prediction and climate change projections through an improved understanding and representation of the CLIVAR TOWN HALL & SESSIONS AT 2020 OCEAN SCIENCES MEETING The 2020 Ocean Sciences Meeting will be held February 16-21 in San Diego, California. We have started to put together a list of US CLIVAR-sponsored sessions along with Town Halls, events, workshops, and other sessions that may be of interested to the US CLIVARcommunity.
OCEAN UNCERTAINTY QUANTIFICATION WORKING GROUP RESOURCES 2021 US CLIVAR Disclaimer Login US Climate Variability and Predictability Program 1201 New York Ave NW, 4th Floor, Washington DC 20005 202.787.1682 uscpo@usclivar TROPICAL CYCLONE THEORY PREDICTABILITY, PREDICTIONS, AND APPLICATIONS INTERFACE The Predictability, Predictions, and Applications Interface (PPAI) Panel's mission is to foster improved practices in the provision, validation and uses of climate information and forecasts through coordinated participation within the US and international climate science and applications communities. IMPACTS OF THE ATLANTIC WARM POOL ON ATLANTIC HURRICANES Impacts of the Atlantic Warm Pool on Atlantic Hurricanes Chunzai Wang NOAA/AOML Miami, Florida CLIVAR IASCLIP Workshop September 10, 2015 Collaborators: Sang-Ki Lee (CIMAS & AOML), David Enfield (CIMAS & WELCOME TO THE US CLIMATE VARIABILITY AND PREDICTABILITYABOUTSCIENCEUS AMOCNEWS & PUBLICATIONSCALENDAR & MEETINGSGET INVOLVED Building a Community of Biogeochemical Float Data Users: The GO-BGC array is a 5-year effort funded by NSF to deploy 500 profiling floats eqiupped with biogeochemical sensors in the world ocean. To inform and engage a broad oceanographic user community, US CLIVAR is teaming up with OCB and GO-BGC leadership to plan a virtual workshop from June PHENOMENA, OBSERVATIONS, AND SYNTHESIS PANEL Phenomena, Observations, and Synthesis Panel. The Phenomena, Observations, and Synthesis Panel's (POS) mission is to improve understanding of climate variations in the past, present, and future, and to develop syntheses of critical climate parameters while sustaining and improving the global climate observing system. TASK TEAM 5: PALEO AMOC Task Team 5: Paleo AMOC. The team is charged with fostering collaborative relationships to facilitate cross-disciplinary learning and understanding among paleo scientists with the modern AMOC community. The team will focus on the variability of AMOC through the last two millennia and on AMOC-related events of the last glacialcycle, a period
THE US ATLANTIC MERIDIONAL OVERTURNING CIRCULATION PROGRAMATLANTIC MERIDIONAL OVERTURNING CIRCULATION …THE ATLANTIC CIRCULATIONGLOBAL OCEAN MERIDIONAL OVERTURNINGAMOC CIRCULATIONAMO ATLANTICATLANTIC MULTIDECADAL OSCILLATION The US AMOC Program, now in its ninth year, was developed as a US interagency program to increase understanding of the Atlantic Meridional Overturning Circulation in response to the fourth near-term priority of the SOST Ocean Research Priorities Plan.The purpose of the program is to bring together researchers studying the AMOC and to build partnerships among modeling and observational groups CLIVAR TOWN HALL & SESSIONS AT 2020 OCEAN SCIENCES MEETING The 2020 Ocean Sciences Meeting will be held February 16-21 in San Diego, California. We have started to put together a list of US CLIVAR-sponsored sessions along with Town Halls, events, workshops, and other sessions that may be of interested to the US CLIVARcommunity.
PROCESS STUDY AND MODEL IMPROVEMENT PANEL The Process Study and Model Improvement (PSMI) Panel's mission is to reduce uncertainties in the general circulation models used for climate variability prediction and climate change projections through an improved understanding and representation of the TROPICAL CYCLONE THEORY OCEAN UNCERTAINTY QUANTIFICATION WORKING GROUP RESOURCES Ocean Uncertainty Quantification Working Group Menu. WG Homepage.Resources.
PREDICTABILITY, PREDICTIONS, AND APPLICATIONS INTERFACE The Predictability, Predictions, and Applications Interface (PPAI) Panel's mission is to foster improved practices in the provision, validation and uses of climate information and forecasts through coordinated participation within the US and international climate science and applications communities. IMPACTS OF THE ATLANTIC WARM POOL ON ATLANTIC HURRICANES Impacts of the Atlantic Warm Pool on Atlantic Hurricanes Chunzai Wang NOAA/AOML Miami, Florida CLIVAR IASCLIP Workshop September 10, 2015 Collaborators: Sang-Ki Lee (CIMAS & AOML), David Enfield (CIMAS & WELCOME TO THE US CLIMATE VARIABILITY AND PREDICTABILITY A new study by Wu and co-authors shows that the duration of individual ENSO events during 1954-2015 can be predicted up to two years in advance using a suite of multiyear retrospective forecasts conducted with the Community Earth System Model version 1, a climate model that well simulates the statistical and dynamical features of the temporal evolution of ENSO events. DATA SCIENCE WORKING GROUP The US CLIVAR Working Group on Emerging Data Science Tools for Climate Variability and Predictability was formed in September 2019. The purpose of the Working Group is to help foster the understanding, adoption, and further the development of modern data science tools for the analysis of large-to-massive climate data sets. PREDICTABILITY, PREDICTIONS, AND APPLICATIONS INTERFACE The Predictability, Predictions, and Applications Interface (PPAI) Panel's mission is to foster improved practices in the provision, validation and uses of climate information and forecasts through coordinated participation within the US and international climate science and applications communities. LARGE ENSEMBLE WORKING GROUP The US CLIVAR Working Group on Large “Initial-Condition” Earth System Model Ensembles (LEs) was formed in March 2018. The intent of the working group is to spearhead a dedicated effort across the national and international climate communities to advance progress on identifying anthropogenic influences on weather and climate amidst the “noise” of internal variability. TROPICAL PACIFIC OBSERVING NEEDS TO ADVANCE PROCESS Schedule. Monday, May 24, 2021 14:00 - 18:00 EDT. Tuesday, May 25, 2021 14:00 - 18:00 EDT. Wednesday, May 26, 2021 14:00 - 19:00 EDT. Times are in Eastern DaylightMJO WORKING GROUP
MJO Working Group. The US CLIVAR MJO Working Group was formed in June 2006. MJO Simulation Diagnostics (developed by the working group) hold promise in guiding future model testing and improvement as well as increased sub-seasonal forecast skill. The Working Group has now reformulated as a WCRP/WWRP-THORPEX YOTC Task Force.AMOC TIME SERIES
This website lists available AMOC time series of transports and fluxes derived from instrument arrays. While the quality-controlled raw data collected from the individual instruments is commonly submitted to data repositories such as OceanSites or the World Ocean Data Base, there is no collection site for AMOC time series products. THE LARGE ENSEMBLES WORKSHOP The Large Ensembles Workshop brought together a diverse group of researchers in climate and related sciences to achieve the following goals: Provide an overview of recent research advances achieved through the application of Large Ensembles; Provide a tutorial on effective use of Large Ensembles for interpreting the observed climaterecord, and
BAOLAN WU1, XIAOPEI LIN AND BO QIU a b c Summer Winter a b Data and Methods Meridional Shift of the Oyashio Extension Front in the Past 35 Years BAOLAN WU1, XIAOPEI LIN1 and BO QIU2,1 Mechanism of Wind Dynamics THE LENGTH SCALE OF POLEWARD MOISTURE TRANSPORT Adriana Bailey1, Hansi Singh2, Jesse Nusbaumer1 1National Center for Atmospheric Research 2University of Victoria The length scale of poleward moisture transport manuscript submitted to Geophysical Research Letters 81 entropy are uniquely defined (Pauluis et al., 2010) — an important feature for defining 82 moisture source regions and transport pathways unambiguously. Skip to main content">
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How does the Deep Western Boundary Current “leak”? In a recent study Solodoch et al. researched the dynamics of the leakiness of material from the Deep Western Boundary Current to interior pathways. Through numerical modeling and observational analyses, they discovered that the leakiness is largely concentrated near several hotspots and manifests largely as a steady offshore flow, consistent with inertial separation. This study joins a host of other studies charting and explaining the three dimensional pathways of the AMOC in recent years.See more...
Predicting the duration of El Niño and La Niña events withmultiyear lead time
A new study by Wu and co-authors shows that the duration of individual ENSO events during 1954-2015 can be predicted up to two years in advance using a suite of multiyear retrospective forecasts conducted with the Community Earth System Model version 1, a climate model that well simulates the statistical and dynamical features of the temporal evolution of ENSO events.See more...
Record-high Beaufort Sea freshwater content could alter local and global ocean circulations The Beaufort Sea increased its freshwater content by 40% over the past two decades. How and where this water will flow into the Atlantic Ocean is important for local and global ocean conditions. Zhang and colleagues simulated ocean circulation and tracked the Beaufort Sea freshwater’s spread during a historical release episode from 1983 to1995.
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Models with corrected double-ITCZ projected drier winters for the USSouthwest
Climate models generally project wetter winters for the US Southwest under global warming. Dong et al. discovered a strong relationship between a common model bias with future precipitation changes over this region. More specifically, models with excessive double-ITCZ biases tend to exaggerate the future precipitation increase.See more...
Are long-term changes in mixed layer depth influencing North Pacificmarine heatwaves?
A new study by Amaya and co-authors in the Special “Explaining Extremes of 2019 from a Climate Perspective” Issue of BAMS now reveals that the record thin ocean mixed layer depth (MLD) that drove a Blob 2.0 in the northeast Pacific Ocean was exacerbated by a multi-decadal shoaling of the mean MLDs in this region since 1980.See more...
Contrasting recent and future changes in the IntertropicalConvergence Zone
Under global warming, the ITCZ is projected to shift towards the equator, leading to squeeze in the annual-mean tropical ascent and far-reaching impacts on global circulation. Zhou and coauthors researched the observed and projected ITCZ changes based on a variety of observation and reanalysis datasets and ensemble projections of climate models, and found that the observed ITCZ changes are largely opposite to the projected future changes.See more...
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WELCOME TO THE US CLIMATE VARIABILITY AND PREDICTABILITY PROGRAM RECORDINGS FOR THE TROPICAL PACIFIC OBSERVING NEEDS WORKSHOP NOWAVAILABLE
Recordings of the plenary sessions are now available online. This include the plenary talks, summary of panel sessions, and opening/closing remarks.Read more...
WATER ISOTOPES AND CLIMATE WORKSHOP REPORT The Water Isotopes and Climate Workshop Report summarizes efforts and lessons learned from the October 2019 workshop and includes emergent themes from the workshop, barriers hindering water isotope applications, and recommendations.Read more...
REGISTRATION NOW OPEN FOR GO-BGC VIRTUAL WORKSHOP Building a Community of Biogeochemical Float Data Users: The GO-BGC array is a 5-year effort funded by NSF to deploy 500 profiling floats eqiupped with biogeochemical sensors in the world ocean. To inform and engage a broad oceanographic user community, US CLIVAR is teaming up with OCB and GO-BGC leadership to plan a virtual workshop from June28-30, 2021.
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