Quantifying Relative Contributions of Light-Absorbing Particles From Domestic and Foreign Sources on Snow Melt at Sapporo, Japan During the 2011-2012 Winter

被引：9

作者：

Niwano, M. ^{[1
,2
]}

Kajino, M. ^{[1
,3
]}

Kajikawa, T. ^{[4
]}

Aoki, T. ^{[2
]}

Kodama, Y. ^{[5
]}

Tanikawa, T. ^{[1
]}

Matoba, S. ^{[6
]}

机构：

[1] Japan Meteorol Agcy, Meteorol Res Inst, Tsukuba, Ibaraki, Japan

[2] Natl Inst Polar Res, Tachikawa, Tokyo, Japan

[3] Univ Tsukuba, Fac Life & Environm Sci, Tsukuba, Ibaraki, Japan

[4] Univ Tsukuba, Grad Sch Sci & Technol, Tsukuba, Ibaraki, Japan

[5] Hokkaido Univ, Arctic Res Ctr, Sapporo, Hokkaido, Japan

[6] Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido, Japan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2021年 / 48卷 / 16期

基金：

日本学术振兴会;

关键词：

light-absorbing particles; seasonal snow; physical snowpack model; regional meteorology-chemistry model; radiative forcing; snow cover duration; NONSPHERICAL ICE PARTICLE; BLACK CARBON; UNCERTAINTY ASSESSMENT; INDEPENDENT SPHERES; ELEMENTAL CARBON; SPECTRAL ALBEDO; GRAIN SHAPE; IN-SITU; MODEL; AEROSOL;

D O I：

10.1029/2021GL093940

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Depositions of light-absorbing particles (LAPs), such as black carbon (BC) and dust, on the snow surface modulate the snow albedo; therefore, they are considered key factors of snow-atmosphere interaction in the present-day climate system. However, their detailed roles have not yet been fully elucidated, mainly due to the lack of in-situ measurements. Here, we develop a new model chain NHM-Chem-SMAP, which is composed of a detailed regional meteorology-chemistry model and a multilayered physical snowpack model, and evaluate it using LAPs concentrations data measured at Sapporo, Japan during the 2011-2012 winter. NHM-Chem-SMAP successfully reproduces the in-situ measured seasonal variations in the mass concentrations of BC and dust in the surface snowpack. Furthermore, we find that LAPs from domestic and foreign sources played a role in shortening the snow cover duration by 5 and 10 days, respectively, compared to the completely pure snow condition.

引用

页数：10