A global scavenging and circulation ocean model of thorium-230 and protactinium-231 with realistic particle dynamics (ProThorP 0.1)
A global scavenging and circulation ocean model of thorium-230 and protactinium-231 with realistic particle dynamics (ProThorP 0.1)
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具有真实粒子动力学的钍 230 和镤 231 的全球清除和循环海洋模型 (ProThorP 0.1)
DOI：
10.5194/gmd-11-3537-2018
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
M. Roy‐Barman
中科院分区：
文献类型：
--
作者：
M. V. Hulten;J. Dutay;M. Roy‐Barman
抽象的。在本文中，我们提出了 3-D
放射性痕量同位素 230Th 的海洋模型
和 231Pa。人们的兴趣来自于这些同位素
广泛用于研究海洋中的颗粒传输
重建过去的海洋环流。示踪剂被可逆地清除
由生物成因和成石颗粒引起。我们对 230Th 和 231Pa 的模拟基于
NEMO–PISCES 海洋生物地球化学大气环流模型，其中包括
生物颗粒，即小颗粒和大颗粒有机碳、钙
碳酸盐和生物二氧化硅。灰尘中的小和大的成石颗粒
沉积也包含在我们的模型中。他们的分布大致
与小和大的成岩颗粒浓度进行了很好的比较
GEOTRACES 计划的最新观测结果（边界除外）
迄今为止，还没有不平凡的云层
全球范围内可用的预后模型。我们的模拟重现
230Th 和 231Pa 溶解浓度：它们的比较
与最近在海洋许多地区进行的 GEOTRACES 观测结果一致。
颗粒物 230Th 和 231Pa 浓度为
与之前的研究相比有显着改善，但仍然太差
低是因为霞云层中缺少颗粒。我们的模拟
再现231Pa∕230Th比的主要特征
在沉积物中观察到并支持中等亲和力
最近的观察表明，231Pa 为生物二氧化硅
相对于230Th。未来的模型开发可能会进一步提高理解，特别是当
这将包括所有粒子的更完整的表示，包括
不同尺寸等级、氢氧化锰和霞石层。这个可以
是基于我们的模型来完成的
源代码很容易获得。
Abstract. In this paper we set forth a 3-D
ocean model of the radioactive trace isotopes 230Th
and 231Pa. The interest arises from the fact that these isotopes
are extensively used for investigating particle transport in the ocean and
reconstructing past ocean circulation. The tracers are reversibly scavenged
by biogenic and lithogenic particles. Our simulations of 230Th and 231Pa are based on the
NEMO–PISCES ocean biogeochemistry general circulation model, which includes
biogenic particles, namely small and big particulate organic carbon, calcium
carbonate and biogenic silica. Small and big lithogenic particles from dust
deposition are included in our model as well. Their distributions generally
compare well with the small and big lithogenic particle concentrations from
recent observations from the GEOTRACES programme, except for boundary
nepheloid layers for which, as of today, there are no non-trivial
prognostic models available on a global scale. Our simulations reproduce
230Th and 231Pa dissolved concentrations: they compare
well with recent GEOTRACES observations in many parts of the ocean.
Particulate 230Th and 231Pa concentrations are
significantly improved compared to previous studies, but they are still too
low because of missing particles from nepheloid layers. Our simulation
reproduces the main characteristics of the 231Pa∕230Th ratio
observed in the sediments and supports a moderate affinity of
231Pa to biogenic silica as suggested by recent observations
relative to 230Th. Future model development may further improve understanding, especially when
this will include a more complete representation of all particles, including
different size classes, manganese hydroxides and nepheloid layers. This can
be done based on our model as its
source code is readily available.
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影响因子：
5.2
作者：
Burckel, Pierre;Waelbroeck, Claire;Thil, Francois
通讯作者：
Thil, Francois
影响因子：
5.3
作者：
Deng, Feifei;Thomas, Alex L.;Henderson, Gideon M.
通讯作者：
Henderson, Gideon M.
影响因子：
64.8
作者：
Boehm, E.;Lippold, J.;Deininger, M.
通讯作者：
Deininger, M.
全流域系泊阵列翻转环流估计的准确性
影响因子：
4.1
作者：
Sinha B
通讯作者：
Sinha B