Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL082929 |
Improved Earth Oblateness Rate Reveals Increased Ice Sheet Losses and Mass-Driven Sea Level Rise | |
Loomis, B. D.1; Rachlin, K. E.2; Luthcke, S. B.1 | |
2019-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:12页码:6910-6917 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Satellite laser ranging (SLR) observations are routinely applied toward the estimation of dynamic oblateness, C-20, which is the largest globally integrated component of Earth's time-variable gravity field. Since 2002, GRACE and GRACE Follow-On have revolutionized the recovery of higher spatial resolution features of global time-variable gravity, with SLR continuing to provide the most reliable estimates of C-20. We quantify the effect of various SLR processing strategies on estimating C-20 and demonstrate better signal recovery with the inclusion of GRACE-derived low-degree gravity information in the forward model. This improved SLR product modifies the Antarctic and Greenland Ice Sheet mass trends by -15.4 and -3.5 Gt/year, respectively, as compared to CSR TN11, and improves global mean sea level budget closure by modifying sea level rise by +0.08 mm/year. We recommend that this new C-20 product be applied to RL06 GRACE data products for enhanced accuracy and scientific interpretation. |
英文关键词 | Earth oblateness satellite laser ranging time variable gravity GRACE Antarctic Ice Sheet global mean sea level |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477616300083 |
WOS关键词 | LENGTH-OF-DAY ; SATELLITE GRAVITY ; GRACE ; ANTARCTICA ; GREENLAND ; GRAVIMETRY ; SIGNAL |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184282 |
专题 | 气候变化 |
作者单位 | 1.NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA; 2.KBRwyle, Greenbelt, MD USA |
推荐引用方式 GB/T 7714 | Loomis, B. D.,Rachlin, K. E.,Luthcke, S. B.. Improved Earth Oblateness Rate Reveals Increased Ice Sheet Losses and Mass-Driven Sea Level Rise[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(12):6910-6917. |
APA | Loomis, B. D.,Rachlin, K. E.,&Luthcke, S. B..(2019).Improved Earth Oblateness Rate Reveals Increased Ice Sheet Losses and Mass-Driven Sea Level Rise.GEOPHYSICAL RESEARCH LETTERS,46(12),6910-6917. |
MLA | Loomis, B. D.,et al."Improved Earth Oblateness Rate Reveals Increased Ice Sheet Losses and Mass-Driven Sea Level Rise".GEOPHYSICAL RESEARCH LETTERS 46.12(2019):6910-6917. |
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