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Progress update on Land Application from Himawari-8

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Presentation on theme: "Progress update on Land Application from Himawari-8"— Presentation transcript:

1 Progress update on Land Application from Himawari-8
Australian Land Applications Working Group (with the exception of Session 2)

2 Land surface temperature retrievals
Luigi Renzullo (CSIRO), Leon Majewski (BoM), Peter Fearns (Curtin Uni.) Aim: to implement and evaluate AHI LST retrievals and assess (i) performance against LEO satellites (e.g. MODIS, Landsat), (ii) accuracy required for surface energy balance studies (esp. evapotranspiration). Work by Dr Yunyue Yu, NOAA, on evaluating many different Split Window Algs. (SWA’s) for ABI on GOES-R Adapt recommended alg. for our holdings of Himawari-8 data. First attempts use: MODIS monthly average emissivity from 2015 (SeeBor, Seeman et al., 2008); and NOAA-NCEP Global Forecast System (GFS) Total Column Water Vapour (TCWV) Himawari workshop 1-2 September 2016

3 Land surface temperature retrievals
First evaluation of AHI LST against MODIS LST (MOD/MYD11A1) for Australia H UTC Aqua LST_day HR (UTC) LST (K) H UTC Aqua LST_day Himawari workshop 1-2 September 2016

4 Land surface temperature retrievals
Bias = H8_LST - MODIS TCWV + Monthly AV. Emis. from MODIS Assume Dry atmos + Monthly AV. Emis. from MODIS Aqua comparison Assume Dry atmos + Daily. Emis. from MODIS Terra comparison Himawari workshop 1-2 September 2016

5 Land surface temperature retrievals
AHI_LST_0140UTC (K) MOD11A1_LST_DAY (K) GFS TWCV + MODIS mnth. av. Emis. Dry atms. + MODIS mnth. av. Emis. SURFRAD (Heidinger et al,. 2013, J Atms. Ocean. Res.) Dry atms. + MODIS daily Emis. Himawari workshop 1-2 September 2016

6 Land surface temperature retrievals
Some next steps: Investigate ACCESS TCWV as an option Explore alternatives for emissivity (incl. adaption of dynamic land cover classification approach) Evaluations to include flux tower data (OzFlux, AsiaFlux, Fluxnet?) Explore uses of cloud mask Progress real collaboration with Japanese colleagues. Need to compare methods, data, results and conduct joint collaboration Himawari workshop 1-2 September 2016

7 Leaf Area Index & Leaf Angle Distribution
Xihan Mu (Beijing Normal Uni. China), Tim McVicar (CSIRO), Qin Yi (CSIRO), Luigi Renzullo (CSIRO) Begun exploration of using visible channels from AHI to infer LAI and LAD Exploiting the high observation frequency use dense temporal observations to eliminate redundant variables & atm. Effect LC map and other data provide clumping index, spectral information of endmembers, etc Himawari workshop 1-2 September 2016

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