DataSheet1_Using GRACE Data to Estimate Climate Change Impacts on the Earth’s Moment of Inertia.docx
The widely used 15-year Gravity Recovery and Climate Experiment (GRACE) measured mass redistribution shows an increasing trend in the nontidal Earth’s moment of inertia (MOI). Various contributing components are independently evaluated using five high-quality atmospheric reanalysis datasets and a no...
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ftsmithonian:oai:figshare.com:article/16609945 2023-05-15T13:54:13+02:00 DataSheet1_Using GRACE Data to Estimate Climate Change Impacts on the Earth’s Moment of Inertia.docx Diandong Ren (11424472) Aixue Hu (11424475) 2021-09-13T04:51:44Z https://doi.org/10.3389/feart.2021.640304.s001 unknown https://figshare.com/articles/dataset/DataSheet1_Using_GRACE_Data_to_Estimate_Climate_Change_Impacts_on_the_Earth_s_Moment_of_Inertia_docx/16609945 doi:10.3389/feart.2021.640304.s001 CC BY 4.0 CC-BY Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change MOI change finger printing earth nontidal MOI enhanced hydrological cycle GRACE measurements climate warming cryosphere and climate change climate warming increases Earth's Moment of Inertia Dataset 2021 ftsmithonian https://doi.org/10.3389/feart.2021.640304.s001 2021-12-20T02:22:34Z The widely used 15-year Gravity Recovery and Climate Experiment (GRACE) measured mass redistribution shows an increasing trend in the nontidal Earth’s moment of inertia (MOI). Various contributing components are independently evaluated using five high-quality atmospheric reanalysis datasets and a novelty numerical modeling system. We found a steady, statistically robust (passed a two-tailed t-test at p = 0.04 for dof = 15) rate of MOI increase reaching ∼11.0 × 10 27 kg m 2 /yr, equivalent to a 11.45 sμ/yr increase in the length of day, during 2002–2017. Further analysis suggests that the Antarctic ice sheet contributes the most, followed by the Greenland ice sheet, the precipitation-driven land hydrological cycle, mountain glaciers, and the fluctuation of atmosphere, in this order. Short-term MOI spikes from the GRACE measurements are mostly associated with major low/mid-latitude earthquakes, fitting closely with the MOI variations from the hydrological cycle. Atmospheric fluctuation contributes the least but has a steady trend of 0.5 sμ/yr, with horizontal mass distribution contributing twice as much as the vertical expansion and associated lift of the atmosphere’s center of mass. The latter is a previously overlooked term affecting MOI fluctuation. The contribution to the observed MOI trend from a warming climate likely will persist in the future, largely due to the continuous mass loss from the Earth’s ice sheets. Dataset Antarc* Antarctic Greenland Ice Sheet Unknown Antarctic The Antarctic Greenland |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
unknown |
topic |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change MOI change finger printing earth nontidal MOI enhanced hydrological cycle GRACE measurements climate warming cryosphere and climate change climate warming increases Earth's Moment of Inertia |
spellingShingle |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change MOI change finger printing earth nontidal MOI enhanced hydrological cycle GRACE measurements climate warming cryosphere and climate change climate warming increases Earth's Moment of Inertia Diandong Ren (11424472) Aixue Hu (11424475) DataSheet1_Using GRACE Data to Estimate Climate Change Impacts on the Earth’s Moment of Inertia.docx |
topic_facet |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change MOI change finger printing earth nontidal MOI enhanced hydrological cycle GRACE measurements climate warming cryosphere and climate change climate warming increases Earth's Moment of Inertia |
description |
The widely used 15-year Gravity Recovery and Climate Experiment (GRACE) measured mass redistribution shows an increasing trend in the nontidal Earth’s moment of inertia (MOI). Various contributing components are independently evaluated using five high-quality atmospheric reanalysis datasets and a novelty numerical modeling system. We found a steady, statistically robust (passed a two-tailed t-test at p = 0.04 for dof = 15) rate of MOI increase reaching ∼11.0 × 10 27 kg m 2 /yr, equivalent to a 11.45 sμ/yr increase in the length of day, during 2002–2017. Further analysis suggests that the Antarctic ice sheet contributes the most, followed by the Greenland ice sheet, the precipitation-driven land hydrological cycle, mountain glaciers, and the fluctuation of atmosphere, in this order. Short-term MOI spikes from the GRACE measurements are mostly associated with major low/mid-latitude earthquakes, fitting closely with the MOI variations from the hydrological cycle. Atmospheric fluctuation contributes the least but has a steady trend of 0.5 sμ/yr, with horizontal mass distribution contributing twice as much as the vertical expansion and associated lift of the atmosphere’s center of mass. The latter is a previously overlooked term affecting MOI fluctuation. The contribution to the observed MOI trend from a warming climate likely will persist in the future, largely due to the continuous mass loss from the Earth’s ice sheets. |
format |
Dataset |
author |
Diandong Ren (11424472) Aixue Hu (11424475) |
author_facet |
Diandong Ren (11424472) Aixue Hu (11424475) |
author_sort |
Diandong Ren (11424472) |
title |
DataSheet1_Using GRACE Data to Estimate Climate Change Impacts on the Earth’s Moment of Inertia.docx |
title_short |
DataSheet1_Using GRACE Data to Estimate Climate Change Impacts on the Earth’s Moment of Inertia.docx |
title_full |
DataSheet1_Using GRACE Data to Estimate Climate Change Impacts on the Earth’s Moment of Inertia.docx |
title_fullStr |
DataSheet1_Using GRACE Data to Estimate Climate Change Impacts on the Earth’s Moment of Inertia.docx |
title_full_unstemmed |
DataSheet1_Using GRACE Data to Estimate Climate Change Impacts on the Earth’s Moment of Inertia.docx |
title_sort |
datasheet1_using grace data to estimate climate change impacts on the earth’s moment of inertia.docx |
publishDate |
2021 |
url |
https://doi.org/10.3389/feart.2021.640304.s001 |
geographic |
Antarctic The Antarctic Greenland |
geographic_facet |
Antarctic The Antarctic Greenland |
genre |
Antarc* Antarctic Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic Greenland Ice Sheet |
op_relation |
https://figshare.com/articles/dataset/DataSheet1_Using_GRACE_Data_to_Estimate_Climate_Change_Impacts_on_the_Earth_s_Moment_of_Inertia_docx/16609945 doi:10.3389/feart.2021.640304.s001 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/feart.2021.640304.s001 |
_version_ |
1766259895952211968 |