本文選題：大氣光學(xué) + 強(qiáng)迫估算�。� 參考：《光學(xué)學(xué)報(bào)》2017年02期

【摘要】：基于擴(kuò)散限制凝聚模型仿真生成了黑碳團(tuán)簇粒子和具備核-殼結(jié)構(gòu)(核為黑碳團(tuán)簇,殼為包覆水層)的混合態(tài)粒子,并模擬了黑碳團(tuán)簇粒子的老化過程,利用團(tuán)簇T矩陣方法計(jì)算并研究了粒子形態(tài)結(jié)構(gòu)和包覆水層對(duì)兩種粒子在550nm波長處的光學(xué)特性。分析表明,新生黑碳團(tuán)簇粒子的光學(xué)特性參數(shù)與等體積球形黑碳粒子之間的差異最大,當(dāng)分形維數(shù)Df為1.8時(shí),散射截面和單次散射反照率的相對(duì)偏差分別達(dá)到61.58%和49.44%,隨著黑碳團(tuán)簇粒子的老化,差異逐漸減小。對(duì)于混合態(tài)粒子,忽略黑碳核的團(tuán)簇結(jié)構(gòu)會(huì)導(dǎo)致前向散射強(qiáng)度、散射截面、消光截面、單次散射反照率、不對(duì)稱因子和F_(34)/F_(11)被低估,導(dǎo)致后向散射強(qiáng)度、吸收截面、-F_(12)/F_(11)、F_(33)/F_(11)、F_(44)/F_(11)被高估;包覆水層厚度的增加會(huì)加劇混合態(tài)粒子散射矩陣中元素隨散射角的振蕩程度,且忽略黑碳核或球形黑碳核假設(shè)所引起的光學(xué)特性參數(shù)相對(duì)偏差呈逐漸減小的趨勢(shì)。該工作有助于進(jìn)一步減小黑碳?xì)馊苣z輻射強(qiáng)迫估算誤差。
[Abstract]:Black carbon cluster particles and mixed particles with core-shell structure (core is black carbon cluster and shell is covered with water layer) are simulated based on diffusion-limited condensation model. The aging process of black carbon cluster particles is simulated. The optical properties of two kinds of particles at 550nm wavelength were calculated and studied by cluster T matrix method. The results show that the difference between the optical properties of the new black carbon cluster particles and the spherical black carbon particles of equal volume is the greatest, when the fractal dimension DF is 1.8, The relative deviations of scattering cross section and single scattering albedo are 61.58% and 49.44% respectively. The difference decreases with the aging of black carbon cluster particles. For mixed particles, ignoring the cluster structure of the black carbon nucleus leads to an underestimation of the forward scattering intensity, the scattering cross section, the extinction cross section, the single incident, the asymmetry factor and the FN 34 / F / FJ / FJ 11), which leads to the overestimation of the backward scattering intensity, the absorption cross-section, and the absorption cross-section, which leads to the overestimation of the forward scattering intensity, the scattering cross-section, the single field, the asymmetry factor and the FN / F / FJ / FJ / 11). The increase of the thickness of the coated water layer will aggravate the oscillation degree of the elements in the scattering matrix of mixed particles with the scattering angle, and the relative deviation of the optical characteristic parameters caused by the assumption of black carbon nucleus or spherical black carbon nucleus will decrease gradually. This work is helpful to further reduce the estimation error of black carbon aerosol radiation forcing.
【作者單位】： 信陽職業(yè)技術(shù)學(xué)院數(shù)學(xué)與計(jì)算機(jī)學(xué)院;中國科學(xué)院遙感與數(shù)字地球研究所遙感科學(xué)國家重點(diǎn)實(shí)驗(yàn)室;河南大學(xué)計(jì)算機(jī)與信息工程學(xué)院;
【基金】：國家自然科學(xué)基金(41501373,41571417)
【分類號(hào)】：X513;P422

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 韓晶;;被忽視的氣候殺手——黑碳[J];大科技(科學(xué)之謎);2010年07期

2 韓永明,曹軍驥;環(huán)境中的黑碳及其全球生物地球化學(xué)循環(huán)[J];海洋地質(zhì)與第四紀(jì)地質(zhì);2005年01期

3 何躍;張甘霖;楊金玲;阮心玲;趙玉國;龔子同;;城市化過程中黑碳的土壤記錄及其環(huán)境指示意義[J];環(huán)境科學(xué);2007年10期

4 支國瑞;張小曳;胡秀蓮;陳穎軍;薛敏;張養(yǎng)梅;張曉春;盛國英;傅家謨;;可持續(xù)發(fā)展背景下的黑碳減排[J];氣候變化研究進(jìn)展;2009年06期

5 唐楊;韓貴琳;徐志方;;黑碳研究進(jìn)展[J];地球與環(huán)境;2010年01期

6 穆燕;秦小光;劉嘉麒;殷志強(qiáng);;黑碳的研究歷史與現(xiàn)狀[J];海洋地質(zhì)與第四紀(jì)地質(zhì);2011年01期

7 黃亮;張國森;吳瑩;張經(jīng);;東海內(nèi)陸架表層沉積物中黑碳的分布及來源[J];地球與環(huán)境;2012年01期

8 林田;方引;陳穎軍;胡利民;郭志剛;張干;;東海內(nèi)陸架沉積物中黑碳分布及其與持久性有機(jī)污染物的相關(guān)性研究[J];環(huán)境科學(xué);2012年07期

9 陳玲;羅濵;黃培光;袁志揚(yáng);尹淑嫻;;東莞市2009年黑碳質(zhì)量濃度的變化特征[J];廣東氣象;2012年04期

10 燕生,王耆;黑碳和碳循環(huán)[J];國外科技動(dòng)態(tài);1999年05期

相關(guān)會(huì)議論文 前10條

1 崣竹子;曹幫歟;朱崇抒;R墫ㄐ，

本文編號(hào)：1857672