Figure 2 shows their 12 month
precipitation forecast on the top half and a map of the accuracy of previous forecasts on the bottom.
Not exact matches
«
Forecasts of stream flow are largely based
on precipitation,» Woodhouse said.
The certainty of the
forecasts is particularly important as warming leads to shifts from temperate to subtropical drylands, which leads to changes in
precipitation and soil moisture, which in turn has profound effects
on ecological services, provided to humanity, including the viability of certain temperate agricultural systems.
While Mora's models, based
on yearly average temperatures, don't
forecast monthly highs, lows or
precipitation changes, they do show warming trends.
2) Soil moisture: memory in soil moisture can last several weeks which can influence the atmosphere through changes in evaporation and surface energy budget and can affect the
forecast of air temperature and
precipitation in certain areas during certain times of the year
on intraseasonal time scales;
Even in «low emission» climate scenarios (
forecasts that are based
on the assumption that future carbon dioxide emissions will increase relatively slowly), models predict
precipitation may decline by 20 - 25 percent over most of California, southern Nevada, and Arizona by the end of this century.
NOAA's
precipitation forecast for the next five days puts over five inches of rain
on a very large stretch of real estate from the Mid-Atlantic up to northern Maine:
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
«If the models do systematically underestimate
precipitation changes that would be bad news», because the existing
forecasts would already cause substantial problems, says Gabriele Hegerl, a climate - system scientist at the University of Edinburgh, UK, and a co-author
on the paper.
For
precipitation, using
forecast SSTs leads to an attribution statement of the same order of magnitude but quantitatively
on the more conservative side.
Worse yet, the snow
on the ground — by lowering air temperatures several degrees — increases the likelihood that
precipitation from forthcoming storms, like the one
forecast for Friday, will tend toward the frozen variety.
Model
precipitation «
forecasts» over the Central Sahel were correlated with observations for about three days, but reinitializing with observed data
on day 5 resulted in a dramatic improvement in the
precipitation validation over the remaining 9 days.
Using simulation models that account for the impact of increased atmospheric carbon dioxide concentrations
on temperature and
precipitation in the region, scientists at the Hadley Center for Climate Prediction and Research in the UK have
forecast significant «die - back» of the Amazon rain forest by mid-century and a virtual collapse of the ecosystem by 2100.
AccuWeather offers a detailed minute - by - minute
precipitation forecast based
on your exact location in several countries, including the US, UK, Canada, Germany and more.
A beautiful app built with the idea of giving you the rain probability at a glance, Raincast makes it quick and easy to stay up to date
on the latest
precipitation forecast for your current location.