Placing the Common Era in a Holocene context: millennial to centennial patterns and trends in the hydroclimate of North America over the past 2000 years
A synthesis of 93 hydrologic records from across North and Central America, and adjacent tropical and Arctic islands, reveals centennial to millennial trends in the regional hydroclimates of the Common Era (CE; past 2000 years). The hydrological records derive from materials stored in lakes, bogs, c...
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fttriple:oai:gotriple.eu:jzsYPwRlr7gh1_VI__UlB 2023-05-15T15:00:28+02:00 Placing the Common Era in a Holocene context: millennial to centennial patterns and trends in the hydroclimate of North America over the past 2000 years Shuman, Bryan N. Routson, Cody McKay, Nicholas Fritz, Sherilyn Kaufman, Darrell Kirby, Matthew E. Nolan, Connor Pederson, Gregory T. St-Jacques, Jeannine-Marie 2018-09-27 https://doi.org/10.5194/cp-14-665-2018 https://cp.copernicus.org/articles/14/665/2018/ en eng Copernicus Publications doi:10.5194/cp-14-665-2018 10670/1.638dh4 1814-9324 1814-9332 https://cp.copernicus.org/articles/14/665/2018/ undefined Geographica Helvetica - geography eISSN: 1814-9332 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.5194/cp-14-665-2018 2023-01-22T17:34:22Z A synthesis of 93 hydrologic records from across North and Central America, and adjacent tropical and Arctic islands, reveals centennial to millennial trends in the regional hydroclimates of the Common Era (CE; past 2000 years). The hydrological records derive from materials stored in lakes, bogs, caves, and ice from extant glaciers, which have the continuity through time to preserve low-frequency ( > 100 year) climate signals that may extend deeper into the Holocene. The most common pattern, represented in 46 (49 %) of the records, indicates that the centuries before 1000 CE were drier than the centuries since that time. Principal component analysis indicates that millennial-scale trends represent the dominant pattern of variance in the southwestern US, northeastern US, mid-continent, Pacific Northwest, Arctic, and tropics, although not all records within a region show the same direction of change. The Pacific Northwest and the southernmost tier of the tropical sites tended to dry toward present, as many other areas became wetter than before. In 22 records (24 %), the Medieval Climate Anomaly period (800–1300 CE) was drier than the Little Ice Age (1400–1900 CE), but in many cases the difference was part of the longer millennial-scale trend, and, in 25 records (27 %), the Medieval Climate Anomaly period represented a pluvial (wet) phase. Where quantitative records permitted a comparison, we found that centennial-scale fluctuations over the Common Era represented changes of 3–7 % in the modern interannual range of variability in precipitation, but the accumulation of these long-term trends over the entirety of the Holocene caused recent centuries to be significantly wetter, on average, than most of the past 11 000 years. Article in Journal/Newspaper Arctic Unknown Arctic Pacific Climate of the Past 14 5 665 686 |
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envir geo Shuman, Bryan N. Routson, Cody McKay, Nicholas Fritz, Sherilyn Kaufman, Darrell Kirby, Matthew E. Nolan, Connor Pederson, Gregory T. St-Jacques, Jeannine-Marie Placing the Common Era in a Holocene context: millennial to centennial patterns and trends in the hydroclimate of North America over the past 2000 years |
topic_facet |
envir geo |
description |
A synthesis of 93 hydrologic records from across North and Central America, and adjacent tropical and Arctic islands, reveals centennial to millennial trends in the regional hydroclimates of the Common Era (CE; past 2000 years). The hydrological records derive from materials stored in lakes, bogs, caves, and ice from extant glaciers, which have the continuity through time to preserve low-frequency ( > 100 year) climate signals that may extend deeper into the Holocene. The most common pattern, represented in 46 (49 %) of the records, indicates that the centuries before 1000 CE were drier than the centuries since that time. Principal component analysis indicates that millennial-scale trends represent the dominant pattern of variance in the southwestern US, northeastern US, mid-continent, Pacific Northwest, Arctic, and tropics, although not all records within a region show the same direction of change. The Pacific Northwest and the southernmost tier of the tropical sites tended to dry toward present, as many other areas became wetter than before. In 22 records (24 %), the Medieval Climate Anomaly period (800–1300 CE) was drier than the Little Ice Age (1400–1900 CE), but in many cases the difference was part of the longer millennial-scale trend, and, in 25 records (27 %), the Medieval Climate Anomaly period represented a pluvial (wet) phase. Where quantitative records permitted a comparison, we found that centennial-scale fluctuations over the Common Era represented changes of 3–7 % in the modern interannual range of variability in precipitation, but the accumulation of these long-term trends over the entirety of the Holocene caused recent centuries to be significantly wetter, on average, than most of the past 11 000 years. |
format |
Article in Journal/Newspaper |
author |
Shuman, Bryan N. Routson, Cody McKay, Nicholas Fritz, Sherilyn Kaufman, Darrell Kirby, Matthew E. Nolan, Connor Pederson, Gregory T. St-Jacques, Jeannine-Marie |
author_facet |
Shuman, Bryan N. Routson, Cody McKay, Nicholas Fritz, Sherilyn Kaufman, Darrell Kirby, Matthew E. Nolan, Connor Pederson, Gregory T. St-Jacques, Jeannine-Marie |
author_sort |
Shuman, Bryan N. |
title |
Placing the Common Era in a Holocene context: millennial to centennial patterns and trends in the hydroclimate of North America over the past 2000 years |
title_short |
Placing the Common Era in a Holocene context: millennial to centennial patterns and trends in the hydroclimate of North America over the past 2000 years |
title_full |
Placing the Common Era in a Holocene context: millennial to centennial patterns and trends in the hydroclimate of North America over the past 2000 years |
title_fullStr |
Placing the Common Era in a Holocene context: millennial to centennial patterns and trends in the hydroclimate of North America over the past 2000 years |
title_full_unstemmed |
Placing the Common Era in a Holocene context: millennial to centennial patterns and trends in the hydroclimate of North America over the past 2000 years |
title_sort |
placing the common era in a holocene context: millennial to centennial patterns and trends in the hydroclimate of north america over the past 2000 years |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-14-665-2018 https://cp.copernicus.org/articles/14/665/2018/ |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Geographica Helvetica - geography eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-14-665-2018 10670/1.638dh4 1814-9324 1814-9332 https://cp.copernicus.org/articles/14/665/2018/ |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-14-665-2018 |
container_title |
Climate of the Past |
container_volume |
14 |
container_issue |
5 |
container_start_page |
665 |
op_container_end_page |
686 |
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1766332571581415424 |