Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model
Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model
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使用分布式能量平衡模型重建热带宗戈冰川小冰期最大范围的气候
DOI：
10.5802/crgeos.145
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
V. Jomelli
中科院分区：
文献类型：
--
作者：
P. Autin;J. Sicart;A. Rabatel;R. Hock;V. Jomelli
． 本研究评估了导致热带Zongo冰川（16°S, Bo-livia）在17世纪末达到小冰期（LIA）最大值的气候条件。在古气候代用资料和过去冰川进展敏感性研究的约束下，我们对不同物理上一致的气候情景进行了年地表物质平衡的敏感性分析。与当前气候相比，这些情景受到1.1 K降温和年降水量增加20%的限制。季节性降水变化是利用模型的三个输入数据构建的：空气温度和相对湿度、降水、风速、入射短波和长波辐射通量的测量，并使用分布式能量平衡模型进行评估。如果获得接近平衡的条件，它们被认为是合理的，冰川范围内的物质平衡。结果表明，除了1.1 K的降温和年降水量增加约20%之外，只有两种季节性降水模式允许LIA平衡：全年均匀分布的降水事件和较早的雨季开始。
. This study assessed the climate conditions that caused the tropical Zongo Glacier (16° S, Bo-livia) to reach its Little Ice Age (LIA) maximum extent in the late 17th century. We carried out sensitivity analyses of the annual surface mass balance to di ff erent physically coherent climate scenarios constrained by information taken from paleoclimate proxies and sensitivity studies of past glacier advances. These scenarios were constrained by a 1.1 K cooling and a 20% increase in annual precipita-tioncomparedtothecurrentclimate.Seasonalprecipitationchangeswereconstructedusingshu ffl ed input data for the model: measurements of air temperature and relative humidity, precipitation, wind speed,incomingshortandlongwaveradiationfluxes,andassessedusingadistributedenergybalance model. They were considered plausible if conditions close to equilibrium glacier-wide mass balance were obtained. Results suggest that on top of a 1.1 K cooling and ∼ 20% increase in annual precipitation, only two seasonal precipitation patterns allow LIA equilibrium: evenly distributed precipitation events across the year and an early wet season onset.
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影响因子：
4.3
作者：
R. Tardif;G. Hakim;W. Perkins;K. Horlick;M. Erb;J. Emile‐Geay;D. Anderson;E. Steig;D. Noone
通讯作者：
R. Tardif;G. Hakim;W. Perkins;K. Horlick;M. Erb;J. Emile‐Geay;D. Anderson;E. Steig;D. Noone
DOI：
10.1029/2018jd029064
发表时间：
2019-01
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
John V. Hurley;M. Vuille;D. R. Hardy
通讯作者：
John V. Hurley;M. Vuille;D. R. Hardy
影响因子：
5.2
作者：
Campos, J. L. P. S.;Cruz, F. W.;Strikis, N. M.
通讯作者：
Strikis, N. M.
影响因子：
5.3
作者：
Apaestegui, James;Cruz, Francisco William;Edwards, R. Lawrence
通讯作者：
Edwards, R. Lawrence