DOI: 10.18742/17197814
title: Kapiti land surface temperature ground validation data

description: This is the land surface temperature (LST) ground validation data collected at ILRI Kapiti Research Ranch Kenya. <br>The useable data series is from October 2018 to March 2019. The data stored here are the raw readings, the values used to correct them and then the final emissivity and downwelling corrected surface temperature values. Also included in the table are the corresponding satellite surface temperatures from MODIS, SEVIRI LWIR, MLST-AS and ERA5-land. Finally, upscaled and corrected ground temperatures for the SEVIRI pixel sizes is given.<br>Each .csv contains one full record from one mast. To get the 'Kapiti upscaled average' take a mean of the four (or three given Mast 2 short record) upscaled ground LST.<br>Please cite the use of this date with both the dataset DOI and the accompanying paper (when available).<br>Column headings are as follows:TIMESTAMP &gt; The date and time of the ground observation.<br>BattV &gt; The battery voltage at time of observation.<br>Sky_heitronic &gt; Sky temperature from Mast 3.<br>EM_108 &gt; SEVIRI FVC derived emissivity at 10.8um.<br>EM_108_errorbar &gt; The error assoicated with EM_108.<br>EM_120 &gt; SEVIRI FVC derived emissivity at 12.0um.<br>EM_120_errorbar &gt; The error assoicated with EM_120.<br>EM_39 &gt; SEVIRI FVC derived emissivity at 3.9um.<br>EM_39_errorbar &gt; The error assoicated with EM_39.<br>EM_87 &gt; SEVIRI FVC derived emissivity at 8.7um.<br>EM_87_errorbar &gt; The error assoicated with EM_87.<br>EM_BB &gt; SEVIRI FVC broad band derived emmisivity.<br>EM_BB_errorbar &gt; The error assoicated with EM_BB.<br>FVC &gt; MLST product assoicated fractional vegetation cover.<br>FVC_errorbar &gt; FVC assoicated error.<br>LAT &gt; SEVIRI pixel sensor latitude.<br>LON &gt; SEVIRI pixel sensor longitude.LST &gt; SEVIRI land surface temperatureLSTS &gt; MLSTS-AS all weather surface temperatureLST_Q_FLAGS &gt; MLST product quality flags<br>LST_errorbar &gt; Error assoicated with the given SEVIRI LST value.<br>SAA &gt; SEVIRI satellite azimuth angle.<br>SZA &gt; SEVIRI satellite zenith angle.TCWV &gt; Total column water vapour.<br>VAA &gt; SEVIRI pixel view azimuth angle.<br>VZA &gt; SEVIRI pixel view zenith angle.<br>f_sun &gt; Fraction of SEVIRI pixel sunlitf_shade &gt; Fraction of SEVIRI pixel in shade.f_canopy &gt; Fraction of SEVIRI pixel with canopy cover.Sky_apogee &gt; Modelled Apogee equivelant sky temperature (from Heitronics).<br>JPL_em &gt; Calculated emissivity for the Apogee sensor in the JPL from the SEVIRI FVC emissivity values. <br>ERA5 &gt; ERA-5 provided LST for the pixel.<br>ERA5 land skt &gt; ERA-5 land provided LST for the pixel.<br>MODIS_LST &gt; MODIS LST for the pixel. <br>Satellite &gt; Name of the MODIS platform that provided MODIS_LST.<br>MODIS_em &gt; MODIS used emissivity value.<br>MODIS_VA &gt; MODIS view angle.<br>JPL_1_LST_LUT &gt; JPL first angle ground rounding corrected with look up table based approach and SEVIRI emissivity.<br>JPL_2_LST_LUT &gt; JPL second angle ground reading corrected with look up table based approach and SEVIRI emissivity..JPL_3_LST_LUT &gt; JPL third angle ground reading corrected with look up table based approach and SEVIRI emissivity..Heitronic_LST_LUT &gt; Ground reading corrected with look up table based approach and SEVIRI emissivity..JPL_1_LST_MODIS &gt; JPL 1 ground reading corrected with MODIS emmisivity. <br>JPL_2_LST_MODIS &gt; JPL 2 ground reading corrected with MODIS emmisivity. <br>JPL_3_LST_MODIS &gt; JPL 3 ground reading corrected with MODIS emmisivity. <br>Heitronic_LST_MODIS &gt; Heitronics ground reading corrected with MODIS emmisivity. <br>JPL_1_LST_LUT_cal &gt; Calibration correction added.<br>JPL_2_LST_LUT_cal &gt; Calibration correction added.<br>JPL_3_LST_LUT_cal &gt; Calibration correction added.<br>Heitronic_LST_LUT_cal &gt; Calibration correction added.<br>TA_1_2_1 &gt; 2 m air temperature at Mast 1.<br>JPL_wv &gt; JPL central wavelength as provided by look up table.<br>Sky_wv &gt; Skywards Heitronics central wavelength as provided by look up table.<br>H_wv &gt; Groundwards Heitronics central wavelength as provided by look up table.<br>Heitronics_uncert &gt; Ground heitronics calculated uncertainty.<br>JPL_1_uncert &gt; JPL 1 calculated uncertainty.<br>JPL_2_uncert &gt; JPL 2 calculated uncertainty.<br>JPL_3_uncert &gt; JPL 3 calculated uncertainty.<br>tod &gt; Time of day classification (night or day).<br>JPL_1_upscaled_LSTS &gt; JPL1 upscaled to the SEVIRI pixel scale using the geometric model.<br>JPL_2_upscaled_LSTS &gt; JPL2 upscaled to the SEVIRI pixel scale using the geometric model.<br>JPL_3_upscaled_LSTS &gt; JPL3 upscaled to the SEVIRI pixel scale using the geometric model.<br>Heitronics_upscaled_LSTS &gt; Ground heitronics upscaled to the SEVIRI pixel scale using the geometric model.<br><br>