i
Tropical Pacific SST and ITCZ Biases in Climate Models: Double Trouble for Future Rainfall Projections?
-
2019
Source: Geophysical Research Letters, 46, 2242-2252.
[PDF-1.42 MB]
Details:
-
Journal Title:Geophysical Research Letters
-
Personal Author:
-
NOAA Program & Office:
-
Description:The double Intertropical Convergence Zone bias remains a persistent problem in coupled general circulation model simulations. Due to the strong sea surface temperature (SST)‐convection relationship in the tropics, precipitation biases are sensitive to background SST. Using historical simulations of 24 coupled general circulation models and an atmospheric general circulation model, we show that cold equatorial SST biases at least exacerbate double Intertropical Convergence Zone biases in the Pacific. A linear regression model is used to demonstrate that improved predictability of precipitation trends is possible with such model‐dependent information as mean‐state SST biases accompanying projected SST trends. These results provide a better understanding of the root of the double Intertropical Convergence Zone bias and a possible path to reduced uncertainty in future tropical precipitation trends.
-
Keywords:
-
Source:Geophysical Research Letters, 46, 2242-2252.
-
Document Type:
-
Rights Information:CC BY-ND
-
Compliance:Submitted
-
Main Document Checksum:urn:sha256:28561e96c1c62d1b41899ddcf19778b990ffbd1bcc586a0dc5f25130429d2e7c
-
File Type:
Related Documents
-
Personal Author:Scheuerer, Michael ;Hamill, Thomas M.2019 | Mon. Wea. Rev. (2019) 147 (3): 1047–1064Description:Forecast uncertainty associated with the prediction of snowfall amounts is a complex superposition of the uncertainty about precipitation amounts and ...2019 | Journal of Geophysical Research: Oceans,;Description:Stratification of the upper few meters of the ocean limits the penetration depth of wind mixing and the vertical distribution of atmospheric fluxes. S...2019 | Elem Sci Anth, 7(1), p.39.Description:From the earliest observations of ozone in the lower atmosphere in the 19th century, both measurement methods and the portion of the globe observed ha...2019 | Journal of Geophysical Research: Atmospheres, 124, 13439-13456Description:We present airborne observations of the vertical gradient of atmospheric oxygen (δ (O2/N2)) and carbon dioxide (CO2) through the atmospheric boundary...2019 | Journal of Geophysical Research: Atmospheres, 124, 7413–7428Description:Deep convection can transport surface moisture and pollution from the planetary boundary layer to the upper troposphere (UT) within a few minutes. The...Personal Author:Mielke-Maday, Ingrid ;Schwietzke, Stefan...2019 | Elem Sci Anth, 7(1), p.13.Description:An intensive coordinated airborne and ground-based measurement study was conducted in the Fayetteville Shale in northwestern Arkansas during September...2019 | Journal of Geophysical Research: Atmospheres, 124, 12141-12156Description:Ice crystals commonly adopt a horizontal orientation under certain aerodynamic and electrodynamic conditions that occur in the atmosphere. While the r...2019 | Journal of Geophysical Research: Atmospheres, 124, 13576-13592Description:Accuracy of cloud predictions in numerical weather models can considerably impact ozone (O-3) forecast skill. This study assesses the benefits in surf...Personal Author:Thompson, Anne M. ;Smit, Herman G. J....2019 | Bull. Amer. Meteor. Soc. (2019) 100 (1): 155–171.Description:The ozonesonde is a small balloon-borne instrument that is attached to a standard radiosonde to measure profiles of ozone from the surface to 35 km wi...2019 | Geophysical Research Letters, 46, 1061-1069.Description:Convective systems dominate the vertical transport of aerosols and trace gases. The most recent in situ aerosol measurements presented here show that ...Evaluating Simulations of Interhemispheric Transport: Interhemispheric Exchange Time Versus SF6 AgeCite2019 | Geophysical Research Letters, 46, 1113-1120.Description:Two recent studies using sulfur hexafluoride (SF6) observations to evaluate interhemispheric transport in two different ensembles of atmospheric chemi...2019 | Journal of Geophysical Research: Atmospheres, 124, 57-71Description:Arctic clouds can profoundly influence surface radiation and thus surface melt. Over Greenland, these cloud radiative effects (CRE) vary greatly with ...Personal Author:Shaw, William J. ;Berg, Larry K....2019 | Bull. Amer. Meteor. Soc. (2019) 100 (9): 1687–1699.Description:In 2015 the U.S. Department of Energy (DOE) initiated a 4-yr study, the Second Wind Forecast Improvement Project (WFIP2), to improve the representatio...Personal Author:Sedlar, Joseph ;Tjernström, Michael2019 | J. Appl. Meteor. Climatol. (2019) 58 (8): 1867–1886Description:Measurements from spaceborne sensors have the unique capacity to fill spatial and temporal gaps in ground-based atmospheric observing systems, especia...Personal Author:White, Allen B. ;Moore, Benjamin J....2019 | Bull. Amer. Meteor. Soc. (2019) 100 (1): 55–70.Description:During winter 2016/17, California experienced numerous heavy precipitation events linked to land-falling atmospheric rivers (ARs) that filled reservoi...Regional Widening of Tropical Overturning: Forced Change, Natural Variability, and Recent TrendsCite2019 | Journal of Geophysical Research: Atmospheres, 124(12), 6104-6119Description:The width of the tropical Hadley circulation (HC) has garnered intense interest in recent decades, owing to the emerging evidence for its expansion in...Personal Author:Oltmans, S. J. ;Cheadle, L. C....2019 | Elem Sci Anth, 7(1), p.6.Description:Data from ground-based ozone (O3) vertical profiling platforms operated during the FRAPPE/DISCOVER-AQ campaigns in summer 2014 were used to characteri...Perturbations of O(D-1) VER, Temperature, Winds, Atomic Oxygen, and TEC at High Southern LatitudesCite2019 | Journal of Geophysical Research: Space Physics,;Description:The study investigates previously unrecognized wind reversals of the daytime thermosphere in the Southern Hemisphere at latitudes of 50 degrees S-70 d...2019 | Journal of Geophysical Research: Space Physics,;Description:Using tens to hundreds of keV proton and electron flux measurements and simultaneous magnetic field measurements from three Geostationary Operational ...
More +
You May Also Like
2021 | Weather and Climate Extremes 32: 100319
Description:
This work considers observed changes in tropical Pacific Ocean rainfall amounts and the influence of climate variability cycles upon them. Observation...
2023 | npj Clim Atmos Sci 6, 18
Description:
Extreme precipitation is among the most destructive natural disasters. Simulating changes in regional extreme precipitation remains challenging, parti...
Checkout today's featured content at repository.library.noaa.gov