FY-3B/D星NDVI与MODISNDVI对作物长势监测对比*钱永兰1赵晓凤1张晔萍2张明伟2王圆圆2吴门新1王小平3QIANYonglan1ZHAOXiaofeng1ZHANGYeping2ZHANGMingwei2WANGYuanyuan2WUMenxin1WANGXiaoping31.国家气象中心，北京，1000812.国家卫星气象中心，北京，1000813.中国气象局兰州干旱气象研究所，中国气象局干旱气候变化与减灾重点实验室，兰州，7300201.NationalMeteorologicalCentre，Beijing100081，China2.NationalSatelliteMeteorologicalCentre，Beijing100081，China3.InstituteofAridMeteorologicalLanzhou，KeylaboratoryofAridClimateChangeandReducingDisasterofCMA，Lanzhou730020，China2023-02-03收稿，2023-04-13改回.钱永兰，赵晓凤，张晔萍，张明伟，王圆圆，吴门新，王小平.2023.FY-3B/D星NDVI与MODISNDVI对作物长势监测对比.气象学报，81（4）：660-672QianYonglan，ZhaoXiaofeng，ZhangYeping，ZhangMingwei，WangYuanyuan，WuMenxin，WangXiaoping.2023.ComparisonofcropgrowthmonitoringbasedonFY-3B/DNDVIandMODISNDVI.ActaMeteorologicaSinica，81（4）:660-672AbstractObjectiveevaluationofNDVIdata,thecropgrowthmonitoringdatafromChineseFengyun3(FY-3)thatisopentotheworldwideusers,ishelpfulfortheapplicationandpromotionofoperationalproducts,algorithmimprovementandcalibrationoflong-termtimeseriesdatasets.Inthestudy,theoperational10-dayandmonthlycompositeNDVIdatasetsofFY-3BandFY-3DarecomparedwiththesimilaroperationalMODISNDVIdatasetsofMOD13A1andMOD13A3andassessedforcropgrowthmonitoringbasedontheinterannualdifferencecomparativemodel,vegetationconditionindexmodelandtheNDVI-basedcropgrowingprogress.TheresultsoftheinterannualdifferencecomparativemodelsuggestthatthedynamicrangeofmonitoringbasedonFY-3NDVIisabout0.1—0.15narrowerthanthatbasedonMODISNDVI，themodeloutputdifferencesarebetween−0.02and0.02,andtheirstandarddeviationsarebetween0.08and0.09,whichcanbeignoredincataloguingevaluationofthecropgrowthcondition.ButthenarrowerdynamicrangeofFY-3suggestsitisnecessarytogradethecroplevelwithanarrowerthreshold.Asforthevegetationconditionindexmodel,thedifferencesbetweenFY-3BNDVIandMODISNDVIareclosetozero,whichindicatesFY-3BNDVIcangeneratetheap...
