Estimation Method of PM2.5 concentrations over sea using satellite-based remote sensing data

• Main Authors: KIM JHOON, CHO YESEUL
• Format: Patent
• Language: English; Korean
• Published: 27.05.2021
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; METEOROLOGY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR; TESTING

The present invention provides a method for calculating marine ultrafine dust using satellite data, comprising: a first step of reconstructing input data to fit a grid size of aerosol satellite data; a second step of temporally and spatially matching the input data with observation data of ultrafine dust in the sea; a third step of generating a model for estimating ultrafine dust on the sea using a random forest algorithm; a fourth step of verifying the generated model; and a fifth step of estimating the concentration of ultrafine dust by time in the sea. 본 발명은 위성 자료를 이용한 해상 초미세먼지 산출 방법으로서, 입력자료를 에어로졸 위성 자료의 격자 크기에 맞추어 재구성하는 제1 단계; 입력 자료와 해상의 초미세먼지 관측자료를 시공간적으로 일치시키는 제2 단계; 랜덤 포레스트(Random forest) 알고리즘을 이용하여 해상위의 초미세먼지를 추정하는 모델을 생성하는 제3 단계; 생성된 모델을 검증하는 제4 단계; 및 해상의 시간별 초미세먼지 농도를 추정하는 제5 단계를 포함한다.