A quantitative method of resolving annual precipitation for the past millennia from Tibetan ice cores
نویسندگان
چکیده
Abstract. Net accumulation records derived from alpine ice cores provide the most direct measurement of past precipitation. However, quantitative reconstruction for millennia remains challenging due to difficulty in identifying annual layers deeper sections cores. In this study, we propose a method reconstruct millennia, using as an example core drilled at Chongce cap northwestern Tibetan Plateau (TP). First, used laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) technology develop ultra-high-resolution trace element three and identified each section based on seasonality these elements. Second, nine 14C ages determined core, applied two-parameter flow model established thinning parameter core. Finally, converted thickness sample rates model. Our results show that mean are 109 mm yr?1 (2511–2541 years BP), 74 (1682–1697 68 (781–789 respectively. For comparison, Holocene precipitation is 103 yr?1. This has potential continuous high-resolution covering or even longer time periods.
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ژورنال
عنوان ژورنال: The Cryosphere
سال: 2022
ISSN: ['1994-0424', '1994-0416']
DOI: https://doi.org/10.5194/tc-16-1997-2022