PERICLIMv1.0: a model deriving palaeo-air temperatures from thaw depth in past permafrost regions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F21%3A00541618" target="_blank" >RIV/67985530:_____/21:00541618 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/21:10433410 RIV/00216224:14310/21:00122894

Výsledek na webu

<a href="https://gmd.copernicus.org/articles/14/1865/2021/" target="_blank" >https://gmd.copernicus.org/articles/14/1865/2021/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5194/gmd-14-1865-2021" target="_blank" >10.5194/gmd-14-1865-2021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

PERICLIMv1.0: a model deriving palaeo-air temperatures from thaw depth in past permafrost regions

Popis výsledku v původním jazyce

Periglacial features, such as various kinds of patterned ground, cryoturbations, frost wedges, solifluction structures, and blockfields, are among the most common relics of cold climate periods, which repetitively occurred throughout the Quaternary. As such, they are widespread archives of past environmental conditions. Climate controls on the development of most periglacial features, however, remain poorly known, and thus empirical palaeo-climate reconstructions based on them have limited validity. This study presents and evaluates a simple new inverse modelling scheme called PERICLIMv1.0 (PERIglacial CLIMate) that derives palaeo-air temperature characteristics related to the palaeo-active-layer thickness, which can be recognized using many relict periglacial features found in past permafrost regions. The evaluation against modern temperature records showed that the model reproduces air temperature characteristics with average errors <= 1.3 degrees C. The past mean annual air temperature modelled experimentally for two sites in the Czech Republic hosting relict cryoturbation structures was between -7.0 +/- 1.9 and -3.2 +/- 1.5 degrees C, which is well in line with earlier reconstructions utilizing various palaeo-archives. These initial results are promising and suggest that the model could become a useful tool for reconstructing Quaternary palaeo-environments across vast areas of mid-latitudes and low latitudes where relict periglacial assemblages frequently occur, but their full potential remains to be exploited.

Název v anglickém jazyce

PERICLIMv1.0: a model deriving palaeo-air temperatures from thaw depth in past permafrost regions

Popis výsledku anglicky

Periglacial features, such as various kinds of patterned ground, cryoturbations, frost wedges, solifluction structures, and blockfields, are among the most common relics of cold climate periods, which repetitively occurred throughout the Quaternary. As such, they are widespread archives of past environmental conditions. Climate controls on the development of most periglacial features, however, remain poorly known, and thus empirical palaeo-climate reconstructions based on them have limited validity. This study presents and evaluates a simple new inverse modelling scheme called PERICLIMv1.0 (PERIglacial CLIMate) that derives palaeo-air temperature characteristics related to the palaeo-active-layer thickness, which can be recognized using many relict periglacial features found in past permafrost regions. The evaluation against modern temperature records showed that the model reproduces air temperature characteristics with average errors <= 1.3 degrees C. The past mean annual air temperature modelled experimentally for two sites in the Czech Republic hosting relict cryoturbation structures was between -7.0 +/- 1.9 and -3.2 +/- 1.5 degrees C, which is well in line with earlier reconstructions utilizing various palaeo-archives. These initial results are promising and suggest that the model could become a useful tool for reconstructing Quaternary palaeo-environments across vast areas of mid-latitudes and low latitudes where relict periglacial assemblages frequently occur, but their full potential remains to be exploited.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

<a href="/cs/project/GA17-21612S" target="_blank" >GA17-21612S: Vývoj strukturních půd a jejich paleogeografický význam pro rekonstrukci přírodních podmínek střední Evropy v kvartéru</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geoscientific Model Development

ISSN

1991-959X

e-ISSN

1991-9603

Svazek periodika

14

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

20

Strana od-do

1865-1884

Kód UT WoS článku

000638995900001

EID výsledku v databázi Scopus

2-s2.0-85103770270