Matches in SemOpenAlex for { <https://semopenalex.org/work/W4323349724> ?p ?o ?g. }
Showing items 1 to 53 of
53
with 100 items per page.
- W4323349724 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Recent tropical expansion rate estimates vary substantially, as a multitude of methods and reanalysis datasets yield conflicting results. Among the many methods of estimating the tropical width, the meridional stream function 500 hPa zero-crossing is the most widely used, as it is directly related to the poleward edge of the Hadley Cell (HC). Other common metrics use atmospheric phenomena associated with the HC as a proxy, for instance the zonal surface wind zero-crossing. As each of these metrics require different data, each with varying error, the level of data-driven uncertainty differs between each metric. While previous work has analyzed the statistical and dynamical relationships between metrics, to date no study has quantified and compared the uncertainty in different HC metrics. In this study, we use ERA5 ensemble members, which include small perturbations in atmospheric variables based on the data error, to quantify the uncertainty associated with six commonly used HC metrics as well as the range of their trend estimates. In the Northern Hemisphere, the tropical expansion rate calculated by the stream function is roughly 0.05 degrees per decade, while the Southern Hemisphere rate is 0.2 degrees per decade. Of the six metrics, only the meridional stream function and precipitation minus evaporation have substantial uncertainties. The stream function errors are large due to uncertainty in the underlying meridional wind data and the presence of large regions of near-neutral circulation at the poleward edge of the tropics. These errors have decreased in recent decades because of improvements in the assimilated observations. Despite these improvements, we recommended using the zonal surface wind zero crossing to analyze tropical extent trends in reanalyses. This is particularly important in the Northern Hemisphere, before the year 2000, and when studying individual seasons other than winter." @default.
- W4323349724 created "2023-03-08" @default.
- W4323349724 creator A5025940563 @default.
- W4323349724 date "2023-03-08" @default.
- W4323349724 modified "2023-10-14" @default.
- W4323349724 title "Comment on egusphere-2022-1438" @default.
- W4323349724 doi "https://doi.org/10.5194/egusphere-2022-1438-ac2" @default.
- W4323349724 hasPublicationYear "2023" @default.
- W4323349724 type Work @default.
- W4323349724 citedByCount "0" @default.
- W4323349724 crossrefType "peer-review" @default.
- W4323349724 hasAuthorship W4323349724A5025940563 @default.
- W4323349724 hasBestOaLocation W43233497241 @default.
- W4323349724 hasConcept C105795698 @default.
- W4323349724 hasConcept C107054158 @default.
- W4323349724 hasConcept C121332964 @default.
- W4323349724 hasConcept C123010829 @default.
- W4323349724 hasConcept C127313418 @default.
- W4323349724 hasConcept C153294291 @default.
- W4323349724 hasConcept C2778835443 @default.
- W4323349724 hasConcept C2780148112 @default.
- W4323349724 hasConcept C33923547 @default.
- W4323349724 hasConcept C39432304 @default.
- W4323349724 hasConcept C49204034 @default.
- W4323349724 hasConcept C91586092 @default.
- W4323349724 hasConceptScore W4323349724C105795698 @default.
- W4323349724 hasConceptScore W4323349724C107054158 @default.
- W4323349724 hasConceptScore W4323349724C121332964 @default.
- W4323349724 hasConceptScore W4323349724C123010829 @default.
- W4323349724 hasConceptScore W4323349724C127313418 @default.
- W4323349724 hasConceptScore W4323349724C153294291 @default.
- W4323349724 hasConceptScore W4323349724C2778835443 @default.
- W4323349724 hasConceptScore W4323349724C2780148112 @default.
- W4323349724 hasConceptScore W4323349724C33923547 @default.
- W4323349724 hasConceptScore W4323349724C39432304 @default.
- W4323349724 hasConceptScore W4323349724C49204034 @default.
- W4323349724 hasConceptScore W4323349724C91586092 @default.
- W4323349724 hasLocation W43233497241 @default.
- W4323349724 hasOpenAccess W4323349724 @default.
- W4323349724 hasPrimaryLocation W43233497241 @default.
- W4323349724 hasRelatedWork W1932483323 @default.
- W4323349724 hasRelatedWork W2140863240 @default.
- W4323349724 hasRelatedWork W2161549781 @default.
- W4323349724 hasRelatedWork W2291504704 @default.
- W4323349724 hasRelatedWork W2383165489 @default.
- W4323349724 hasRelatedWork W2514382682 @default.
- W4323349724 hasRelatedWork W3033565426 @default.
- W4323349724 hasRelatedWork W3048465091 @default.
- W4323349724 hasRelatedWork W3144204744 @default.
- W4323349724 hasRelatedWork W4200229308 @default.
- W4323349724 isParatext "false" @default.
- W4323349724 isRetracted "false" @default.
- W4323349724 workType "peer-review" @default.