Murdock, T.Q., Cannon, A.J., Sobie, S.R., Veerman, B., Anslow, F. and Zwiers, F.W. (2014) Workshop Primer:
Projected precipitation extremes for Coastal British Columbia.
Not exact matches
Extremely heavy
precipitation was
projected to become even more
extreme in a warmer world.
Researchers charge global warming with
projected significant increases in the frequency of both
extreme precipitation and landfalling atmospheric rivers
What goes up must eventually come down, so climate science
projects that
extreme precipitation should increase.
He is a principal investigator for research
projects related to
extreme weather, global water and energy cycle, and high latitude
precipitation.
In the second real - time
extreme weather attribution study in the context of the World Weather Attribution
project the team found a 5 - 80 % increase in the likelihood of heavy
precipitation like those associated with storm Desmond to occur due to anthropogenic climate change.
More
extreme precipitation near the centers of tropical cyclones making landfall is
projected in North and Central America, East Africa, West, East, South and Southeast Asia as well as in Australia and many Pacific islands (medium confidence).»
Changes in
extreme precipitation projected by models, and thus the impacts of future changes in
extreme precipitation, may be underestimated because models seem to underestimate the observed increase in heavy
precipitation with warming.
Extremely heavy
precipitation was
projected to become even more
extreme in a warmer world.
Warming temperatures, changes in
precipitation, and more
extreme weather are
projected to increase populations of disease - carrying vectors like mosquitoes with West Nile Virus and of the types of bacteria and toxic algae that contaminate shellfish and recreational waters for activities like swimming and boating.
Increases in the frequency and intensity of
extreme precipitation events are
projected for all U.S. regions.
Large - scale flooding can also occur due to
extreme precipitation in the absence of snowmelt (for example, Rush Creek and the Root River, Minnesota, in August 2007 and multiple rivers in southern Minnesota in September 2010).84 These warm - season events are
projected to increase in magnitude.
Given
projected increases in the frequency and intensity of
extreme precipitation events in the Midwest (Chapter 2: Our Changing Climate, Key Message 6), 57 it appears that sewer overflow will continue to constitute a significant current health threat and a critical source of climate change vulnerability for major urban areas within the Midwest.
2: Our Changing Climate, Key Message 5).2 Regional climate models (RCMs) using the same emissions scenario also
project increased spring
precipitation (9 % in 2041 - 2062 relative to 1979 - 2000) and decreased summer
precipitation (by an average of about 8 % in 2041 - 2062 relative to 1979 - 2000) particularly in the southern portions of the Midwest.12 Increases in the frequency and intensity of
extreme precipitation are
projected across the entire region in both GCM and RCM simulations (Figure 18.6), and these increases are generally larger than the
projected changes in average
precipitation.12, 2
Precipitation extremes and their potential future changes were predicted using six - member ensembles of general circulation models (GCMs) from the Coupled Model Intercomparison
Project Phase 5 (CMIP5).
Evidence that
extreme precipitation is increasing is based primarily on analysis1, 2,3 of hourly and daily
precipitation observations from the U.S. Cooperative Observer Network, and is supported by observed increases in atmospheric water vapor.4 Recent publications have
projected an increase in
extreme precipitation events, 1,5 with some areas getting larger increases6 and some getting decreases.7, 2
In the second real - time
extreme weather attribution study in the context of the World Weather Attribution
project the team found a 5 - 80 % increase in the likelihood of heavy
precipitation like those associated with storm Desmond to occur due to anthropogenic climate change.
Yearly maxima of the daily
precipitation and wadi flow for varying return periods were compared for observed and
projected data by fitting the generalized
extreme value (GEV) distribution function.
Overall, however, scientists
project an increase in
precipitation in the Great Lakes region (with
extreme events
projected to contribute to this increase), which will contribute to maintenance of or an increase in Great Lakes water levels.
The US CLIVAR
Extremes Working Group was formed to evaluate whether current climate models produce extremes for the right reasons and whether they can be used for predicting and projecting short - term extremes in temperature and precipitation over North
Extremes Working Group was formed to evaluate whether current climate models produce
extremes for the right reasons and whether they can be used for predicting and projecting short - term extremes in temperature and precipitation over North
extremes for the right reasons and whether they can be used for predicting and
projecting short - term
extremes in temperature and precipitation over North
extremes in temperature and
precipitation over North America.
These scaling relationships do not appear to provide a reliable basis for
projecting future
precipitation extremes.
More
extreme precipitation events (with 3 - hour duration) so intense than in the past they would be exceeded on average only once every 10 years are
projected to occur on average three times as often in future in Metro Vancouver and about three and a half times as often in future in CRD.
In the Northeast US
extreme precipitation has increased by more than 70 % in the last 50 years and is
projected to continue to increase.
CAS = Commission for Atmospheric Sciences CMDP = Climate Metrics and Diagnostic Panel CMIP = Coupled Model Intercomparison
Project DAOS = Working Group on Data Assimilation and Observing Systems GASS = Global Atmospheric System Studies panel GEWEX = Global Energy and Water Cycle Experiment GLASS = Global Land - Atmosphere System Studies panel GOV = Global Ocean Data Assimilation Experiment (GODAE) Ocean View JWGFVR = Joint Working Group on Forecast Verification Research MJO - TF = Madden - Julian Oscillation Task Force PDEF = Working Group on Predictability, Dynamics and Ensemble Forecasting PPP = Polar Prediction
Project QPF = Quantitative
precipitation forecast S2S = Subseasonal to Seasonal Prediction
Project SPARC = Stratospheric Processes and their Role in Climate TC = Tropical cyclone WCRP = World Climate Research Programme WCRP Grand Science Challenges • Climate
Extremes • Clouds, Circulation and Climate Sensitivity • Melting Ice and Global Consequences • Regional Sea - Ice Change and Coastal Impacts • Water Availability WCRP JSC = Joint Scientific Committee WGCM = Working Group on Coupled Modelling WGSIP = Working Group on Subseasonal to Interdecadal Prediction WWRP = World Weather Research Programme YOPP = Year of Polar Prediction
We will introduce and familiarize users with the development of a repository for station - based climate data in the province, the production of high resolution maps of temperature and
precipitation climatology, and additional
projects describing
extreme precipitation and regional climate anomalies.
Another aspect of these
projected changes is that wet
extremes are
projected to become more severe in many areas where mean
precipitation is expected to increase, and dry
extremes are
projected to become more severe in areas where mean
precipitation is
projected to decrease.
Impacts harmful to society, including increased
extremes of heat,
precipitation, and coastal high water are currently being experienced, and are
projected to increase.
Topics include observations of
precipitation extremes, detection and attribution work on
precipitation extremes and
projected changes to
precipitation extremes.
The recurring theme, though, is difficulties in conducting agriculture: drought in Central America, Pakistan, the western US or Australia, more monsoonal
precipitation extremes in India, and strengthening cyclonic storms add up to a
projected net global food deficit at 2.5 C.
Nature paper As a consequence, a 25 % to 100 % increase in
extreme dry - to - wet
precipitation events is
projected, despite only modest changes in mean
precipitation.
At the meeting we will introduce and familiarize users with the development of a repository for station - based climate data in the province, the production of high resolution maps of temperature and
precipitation climatology, and additional
projects describing
extreme precipitation and regional climate anomalies.
In Central America, the
projected time - averaged
precipitation decrease is accompanied by more frequent dry
extremes in all seasons.
In addition, both
precipitation and evaporation are
projected to increase, and occurrences of unusual warmth and
extreme wet and dry conditions are expected to become more frequent.»