Application of Adjoint Data Assimilation Method to Atmospheric Aerosol Transport Problems

المؤلفون المشاركون

Fu, Kai
Xu, Minjie
Lv, Xianqing

المصدر

Advances in Mathematical Physics

العدد

المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-14، 14ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2017-03-30

دولة النشر

مصر

عدد الصفحات

14

التخصصات الرئيسية

الفيزياء

الملخص EN

We propose combining the adjoint assimilation method with characteristic finite difference scheme (CFD) to solve the aerosol transport problems, which can predict the distribution of atmospheric aerosols efficiently by using large time steps.

Firstly, the characteristic finite difference scheme (CFD) is tested to compute the Gaussian hump using large time step sizes and is compared with the first-order upwind scheme (US1) using small time steps; the US1 method gets E2 error of 0.2887 using Δt=1/450, while CFD method gets a much smaller E2 of 0.2280 using a much larger time step Δt=1/45.

Then, the initial distribution of PM2.5 concentration is inverted by the adjoint assimilation method with CFD and US1.

The adjoint assimilation method with CFD gets better accuracy than adjoint assimilation method with US1 while adjoint assimilation method with CFD costs much less computational time.

Further, a real case of PM2.5 concentration distribution in China during the APEC 2014 is simulated by using adjoint assimilation method with CFD.

The simulation results are in good agreement with the observed values.

The adjoint assimilation method with CFD can solve large scale aerosol transport problem efficiently.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Xu, Minjie& Fu, Kai& Lv, Xianqing. 2017. Application of Adjoint Data Assimilation Method to Atmospheric Aerosol Transport Problems. Advances in Mathematical Physics،Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1123234

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Xu, Minjie…[et al.]. Application of Adjoint Data Assimilation Method to Atmospheric Aerosol Transport Problems. Advances in Mathematical Physics No. 2017 (2017), pp.1-14.
https://search.emarefa.net/detail/BIM-1123234

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Xu, Minjie& Fu, Kai& Lv, Xianqing. Application of Adjoint Data Assimilation Method to Atmospheric Aerosol Transport Problems. Advances in Mathematical Physics. 2017. Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1123234

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1123234