Rapid Mass Loss in West Antarctica Revealed by Swarm Gravimetry in the Absence of GRACE

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00550254" target="_blank" >RIV/67985815:_____/21:00550254 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1029/2021GL095141" target="_blank" >https://doi.org/10.1029/2021GL095141</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2021GL095141" target="_blank" >10.1029/2021GL095141</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rapid Mass Loss in West Antarctica Revealed by Swarm Gravimetry in the Absence of GRACE

Popis výsledku v původním jazyce

GRACE observations revealed that rapid mass loss in the West Antarctic Ice Sheet (WAIS) abruptly paused in 2015, followed by a much lower rate of mass loss (21.3 +/- 5.7 $21.3pm 5.7$ Gt yr(-1)) until the decommissioning of GRACE in 2017. The critical 1-year GRACE intermission data gap raises the question of whether the reduced mass loss rate persists. The Swarm gravimetry data, which have a lower resolution, show good agreement with GRACE/GRACE-FO observations during the overlapping period, i.e., high correlation (0.78) and consistent trend estimates. Swarm data efficiently bridge the GRACE/GRACE-FO data gap and reveal that WAIS has returned to the rapid mass loss state (161.5 +/- 48.4 $161.5pm 48.4$ Gt yr(-1)) that prevailed prior to 2015 during the GRACE intermission data gap. The changes in precipitation patterns, driven by the climate cycles, further explain and confirm the dramatic shifts in the WAIS mass loss regime implied by the Swarm observations.

Název v anglickém jazyce

Rapid Mass Loss in West Antarctica Revealed by Swarm Gravimetry in the Absence of GRACE

Popis výsledku anglicky

GRACE observations revealed that rapid mass loss in the West Antarctic Ice Sheet (WAIS) abruptly paused in 2015, followed by a much lower rate of mass loss (21.3 +/- 5.7 $21.3pm 5.7$ Gt yr(-1)) until the decommissioning of GRACE in 2017. The critical 1-year GRACE intermission data gap raises the question of whether the reduced mass loss rate persists. The Swarm gravimetry data, which have a lower resolution, show good agreement with GRACE/GRACE-FO observations during the overlapping period, i.e., high correlation (0.78) and consistent trend estimates. Swarm data efficiently bridge the GRACE/GRACE-FO data gap and reveal that WAIS has returned to the rapid mass loss state (161.5 +/- 48.4 $161.5pm 48.4$ Gt yr(-1)) that prevailed prior to 2015 during the GRACE intermission data gap. The changes in precipitation patterns, driven by the climate cycles, further explain and confirm the dramatic shifts in the WAIS mass loss regime implied by the Swarm observations.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/LTT18011" target="_blank" >LTT18011: Časové změny fyzikálních polí zemského jádra z pozorování geopotenciálních družic</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

Geophysical Research Letters

ISSN

0094-8276

e-ISSN

1944-8007

Svazek periodika

48

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

e2021GL095141

Kód UT WoS článku

000730019700050

EID výsledku v databázi Scopus

2-s2.0-85121053119