Phosphorus Chemistry in the Earth's Upper Atmosphere
Phosphorus Chemistry in the Earth's Upper Atmosphere
复制标题
地球高层大气中的磷化学
DOI:
10.1002/essoar.10507675.1
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Plane J
中科院分区:
文献类型:
--
作者:
Plane J
The ablation of phosphorus from interplanetary dust particles entering the Earth's atmosphere is a potentially significant source of this key bioelement. In this study, the atmospheric chemistry of phosphorus is explored by developing a reaction network of possible routes from PO, the major ablation product in the upper mesosphere/lower thermosphere region, to the stable reservoirs H3PO3and H3PO4that become incorporated into meteoric smoke particles (MSPs) as metal phosphites and phosphates, respectively. The network is constructed with reactions whose kinetics have been measured experimentally, together with reactions where theoretical rate coefficients are estimated using a combination of electronic structure theory calculations and a Rice‐Ramsperger‐Kassel‐Markus master equation treatment. The network is then incorporated into a global chemistry‐climate model, together with a phosphorus meteoric input function. The estimated global mean P deposition flux, in the form of submicron‐sized MSPs, is 1 × 10−8g m−2yr−1, with a maximum of ∼5 × 10−8g m−2yr−1over the northern Rockies, Himalayas, and southern Andes. The estimated fraction of ablated phosphorus forming bioavailable metal phosphites is 11%, which results from the very large concentrations of O and H compared to OH in the upper mesosphere. A layer of OPO is predicted to occur at 90 km with a peak of concentration of ∼50 cm−3; this is the counterpart of the well‐known layers of meteoric metals such as Na and Fe, and may be observable spectroscopically.
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影响因子:
5.2
作者:
T. Viehl;J. Plane;W. Feng;J. Höffner
通讯作者:
T. Viehl;J. Plane;W. Feng;J. Höffner
影响因子:
--
作者:
E. Kopp;P. Eberhardt;U. Herrmann;L. Björn
通讯作者:
L. Björn
影响因子:
2.4
作者:
J. Carrillo-Sánchez;D. Bones;K. Douglas;G. Flynn;S. Wirick;B. Fegley;T. Araki;B. Kaulich;J. Pl
通讯作者:
J. Carrillo-Sánchez;D. Bones;K. Douglas;G. Flynn;S. Wirick;B. Fegley;T. Araki;B. Kaulich;J. Pl
DOI:
10.1029/2020ja028083
发表时间:
2020
期刊:
Space Physics
影响因子:
--
作者:
Daly S
通讯作者:
Daly S
DOI:
10.1088/0004-637x/743/2/129
发表时间:
2011
期刊:
The Astrophysical Journal
影响因子:
--
作者:
D. Nesvorný;D. Janches;D. Vokrouhlický;P. Pokorný;W. Bottke;P. Jenniskens
通讯作者:
P. Jenniskens