Disaggregating geodetic glacier mass balance to annual scale using remote-sensing proxies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F23%3A97522" target="_blank" >RIV/60460709:41330/23:97522 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1017/jog.2022.89" target="_blank" >http://dx.doi.org/10.1017/jog.2022.89</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/jog.2022.89" target="_blank" >10.1017/jog.2022.89</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Disaggregating geodetic glacier mass balance to annual scale using remote-sensing proxies

Popis výsledku v původním jazyce

Decadal-scale, high-resolution geodetic measurements of glacier thinning have transformed our understanding of glacier response to climate change. Annual glacier mass balance can be estimated using remote-sensing proxies like snow-line altitude. These methods require field data for calibration, which are not available for most glaciers. Here we propose a method that combines multiple remotely-sensed proxies to obtain robust estimates of the annual glacier-wide balance using only remotely-sensed decadal-scale geodetic mass balance for calibration. The method is tested on Chhota Shigri, Argentiere and Saint-Sorlin glaciers in the Himalaya and the Alps between 2001 and 2020, using four remotely-sensed proxies - the snow-line altitude, the minimum summer albedo over the glacier and two statistics of normalised difference snow index over the off-glacier area around the ablation zone. The reconstructed mass balance compares favourably with the corresponding glaciological field data (correlation coefficient 0.81 - 0.90, p < 0.001; root mean squared error 0.38 - 0.43 m w.e. a(-1)). The method presented may be useful to study interannual variability in mass balance on glaciers where no field data are available.

Název v anglickém jazyce

Disaggregating geodetic glacier mass balance to annual scale using remote-sensing proxies

Popis výsledku anglicky

Decadal-scale, high-resolution geodetic measurements of glacier thinning have transformed our understanding of glacier response to climate change. Annual glacier mass balance can be estimated using remote-sensing proxies like snow-line altitude. These methods require field data for calibration, which are not available for most glaciers. Here we propose a method that combines multiple remotely-sensed proxies to obtain robust estimates of the annual glacier-wide balance using only remotely-sensed decadal-scale geodetic mass balance for calibration. The method is tested on Chhota Shigri, Argentiere and Saint-Sorlin glaciers in the Himalaya and the Alps between 2001 and 2020, using four remotely-sensed proxies - the snow-line altitude, the minimum summer albedo over the glacier and two statistics of normalised difference snow index over the off-glacier area around the ablation zone. The reconstructed mass balance compares favourably with the corresponding glaciological field data (correlation coefficient 0.81 - 0.90, p < 0.001; root mean squared error 0.38 - 0.43 m w.e. a(-1)). The method presented may be useful to study interannual variability in mass balance on glaciers where no field data are available.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF GLACIOLOGY

ISSN

0022-1430

e-ISSN

1727-5652

Svazek periodika

69

Číslo periodika v rámci svazku

276

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

683-692

Kód UT WoS článku

000889915400001

EID výsledku v databázi Scopus

2-s2.0-85167686039