NOAA/WDS Paleoclimatology - Temperate Western North America 1500-1980 AD February-March 2m Air Temperature
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title: NOAA/WDS Paleoclimatology - Temperate Western North America 1500-1980 AD February-March 2m Air Temperature
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date: 2014-09-02
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Anchor: DOI doi:10.25921/186r-cc58
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individualName: Smerdon, J.E.
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abstract: This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Climate Reconstruction. The data include parameters of climate reconstructions|tree ring with a geographic location of North America. The time period coverage is from 450 to -30 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
purpose: Records of past temperature, precipitation, and other climate variables derived from paleoclimate proxies. Parameter keywords describe what was measured in this data set. Additional summary information can be found in the abstracts of papers listed in the data set citations.
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keyword: Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Reconstructions
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keyword: earth science > paleoclimate > climate reconstructions|tree ring
keyword: earth science > paleoclimate > climate reconstructions|tree ring
keyword: earth science > paleoclimate > reconstructions > air temperature
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keyword: Air Temperature Reconstruction
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keyword: What: surface air temperature; Material: null
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keyword: Continent > North America > Temperate Western North America > LATITUDE > LONGITUDE
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keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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otherConstraints: Cite as: Wahl, E.R.; Diaz, H.F.; Smerdon, J.E.; Ammann, C.M. (2014-09-02): NOAA/WDS Paleoclimatology - Temperate Western North America 1500-1980 AD February-March 2m Air Temperature. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/186r-cc58. Accessed [date].
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otherConstraints: Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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otherConstraints: Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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otherConstraints: Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
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title: Late Winter Temperature Response to Large Tropical Volcanic Eruptions in Temperate Western North America: Relationship to ENSO Phases
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date: 2014
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individualName: Wahl, E.R., H.F. Diaz, J.E. Smerdon, and C.M. Ammann
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linkage: https://doi.org/10.1016/j.gloplacha.2014.08.005
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description: Wahl, E.R., H.F. Diaz, J.E. Smerdon, and C.M. Ammann, 2014: Late Winter Temperature Response to Large Tropical Volcanic Eruptions in Temperate Western North America: Relationship to ENSO Phases. Global and Planetary Change, 122, 238-250, 10.1016/j.gloplacha.2014.08.005
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language: eng; USA
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extent: (EX_Extent)
description: Date Range: 1500 CE to 1980 CE; Date Range: 450 cal yr BP to -30 cal yr BP;
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westBoundLongitude: -130
eastBoundLongitude: -95
southBoundLatitude: 30
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beginPosition: 1500
endPosition: 1980
supplementalInformation: ABSTRACT SUPPLIED BY ORIGINATOR: February-March temperature reconstructions in western North America from 1500-1980 in the Common Era (CE) are used to evaluate, from a regional perspective, the hypothesis that radiative forcing by large tropical volcanic eruptions induces a tendency in the climate system towards an early post-event El Niño (EN) response followed by a delayed La Niña (LN) response. Post-event spatial composites using superposed epoch analysis (SEA) detect indications for an EN-like pattern in post-event Years 1-2; this result, however, is sensitive to the set of eruptions evaluated. Highly significant LN-like patterns are also observed for two eruptions during Year 1. In contrast, a clear and unique LN-like response is found in both evaluated eruption sets during Years 3-5; Year 3 in particular represents the time of strongest post-event response. No significant EN-like patterns occur during these years. The relative homogeneity of the SEA response for each post-event year is evaluated in terms of the ratio of the amplitude of the SEA composite to its standard deviation across the eruption events. In relation to the same metric determined from random-event-year SEAs, these signal-to-noise ratios are most highly significant in the portions of the domain with the strongest anomalies in Years 1-5, especially Year 3. The signal-to-noise ratios tend towards uniformly low and insignificant values beyond the first half-decade after the eruption, indicating generally reduced coherence across events. In relation to the larger-scale circulation, post-eruption 500 mb February-March geopotential height composites from the 20th Century Reanalysis show ENSO-type features that are largely consistent with the SEA results from the primary eruption set during Year 1, but are inconsistent with the EN-like pattern exhibited by the second eruption set during Years 1-2. In Year 3, the pressure composite over North America and the adjacent Pacific and Atlantic is strongly LN-like, consistent with all SEA results; similarly, weakening coherence across events as time progresses beyond Year 3 is also consistent with more variable pressure composites noted after that time. The relatively robust character of the delayed LN-like response is evaluated in terms of the dynamic rebound of the climate system towards its initial energy balance as the radiative impact of immediate post-eruption aerosol cooling dissipates. The LN-like SEA temperature response in Years 3-5 exhibits a slight shift of its southern warm anomaly to the north and west relative to pure composite LN conditions, which is detected as a specifically post-eruption feature in the region.
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maintenanceNote: This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21
