Temperature Covariance in Tree Ring Reconstructions and Model Simulations Over the Past Millennium
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F17%3A00484466" target="_blank" >RIV/86652079:_____/17:00484466 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/00216224:14310/17:00122717
Výsledek na webu
<a href="http://dx.doi.org/10.1002/2017GL073239" target="_blank" >http://dx.doi.org/10.1002/2017GL073239</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/2017GL073239" target="_blank" >10.1002/2017GL073239</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Temperature Covariance in Tree Ring Reconstructions and Model Simulations Over the Past Millennium
Popis výsledku v původním jazyce
Spatial covariance in the simulated temperature evolution over the past millennium has been reported to exceed that of multiproxy-based reconstructions. Here we use tree ring-based temperature reconstructions and state-of-the-art climate model simulations to assess temporal changes in Northern Hemisphere intercontinental temperature covariance during the last 1000 years. Tree ring-only approaches reveal stronger agreement with model simulations compared to multiproxy networks. Although simulated temperatures exhibit a substantial spread among individual models, intercontinental temperature coherency is mainly driven by the cooling of large volcanic eruptions in 1257, 1452, 1600, and 1815 Common Era. The coherence of these synchronizing events appears to be elevated in several climate simulations relative to their own unforced covariance baselines and in comparison to the proxy reconstructions. This suggests that some models likely overestimate the amplitude of abrupt summer cooling in response to volcanic eruptions, particularly at larger spatial scales.
Název v anglickém jazyce
Temperature Covariance in Tree Ring Reconstructions and Model Simulations Over the Past Millennium
Popis výsledku anglicky
Spatial covariance in the simulated temperature evolution over the past millennium has been reported to exceed that of multiproxy-based reconstructions. Here we use tree ring-based temperature reconstructions and state-of-the-art climate model simulations to assess temporal changes in Northern Hemisphere intercontinental temperature covariance during the last 1000 years. Tree ring-only approaches reveal stronger agreement with model simulations compared to multiproxy networks. Although simulated temperatures exhibit a substantial spread among individual models, intercontinental temperature coherency is mainly driven by the cooling of large volcanic eruptions in 1257, 1452, 1600, and 1815 Common Era. The coherence of these synchronizing events appears to be elevated in several climate simulations relative to their own unforced covariance baselines and in comparison to the proxy reconstructions. This suggests that some models likely overestimate the amplitude of abrupt summer cooling in response to volcanic eruptions, particularly at larger spatial scales.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10511 - Environmental sciences (social aspects to be 5.7)
Návaznosti výsledku
Projekt
<a href="/cs/project/LO1415" target="_blank" >LO1415: CzechGlobe 2020 - Rozvoj Centra pro studium dopadů globální změny klimatu</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Geophysical Research Letters
ISSN
0094-8276
e-ISSN
—
Svazek periodika
44
Číslo periodika v rámci svazku
18
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
12
Strana od-do
9458-9469
Kód UT WoS článku
000413148100042
EID výsledku v databázi Scopus
2-s2.0-85030481756