00-README.txt ============= 2017-11-05 prepared by Werner Eugster, ETH Zurich, eugsterw@ethz.ch These datasets were used in the following publication: Werner Eugster, Carmen Emmel, Sebastian Wolf, Nina Buchmann, Joseph P. McFadden, and Charles David Whiteman (2017) Effects of vernal equinox solar eclipse on temperature and wind direction in Switzerland. Atmospheric Chemistry and Physics, doi:10.5194/acp-2017-321 The datasets from MeteoSwiss are not freely distributable, thus these data are not included in this repository. The data obtained by Eugster et al., however, are freely available (open access), but raw eddy covariance data are not (yet) made available on a public repository since they are in binary format and large. What is included here are the aggregated data eddy covariance data for wind direction used in figures included in the article, and the meteorological data at original resolution. All datasets from Swiss Fluxnet sites that are not shown in figures in the article are not included here, but the first author can be asked for these data if needed: eugsterw@ethz.ch THE DATA FILES INCLUDED ARE: ---------------------------------------------------------------------------------- CH-AWS-060secs-DIR.csv Aggregated wind direction from 20-Hz eddy covariance measurements at Crap Alv/ Alp Weissenstein of Swiss fluxnet. Data were aggregated to 60-minute means. Used in Figure 7. The variable names in the header have the following content/meaning: Period Internal variable for aggregating the data from the three days of interest (2 days before the eclipse, plus day of eclipse) DIR.March.18 Wind direction on 18 March 2015, 2 days before eclipse DIR.March.19 Wind direction on 19 March 2015, 1 day before eclipse DIR.March.20 Wind direction on 20 March 2015, the day of the eclipse TIMESTAMP The date and time for the day with the eclipse; subtract 1 day to get date and time for DIR.March.19; subtract 2 days to get date and time for DIR.March.18 Times are in CET (UTC + 1 hour) CH-AWS-Meteo-10min.csv Meteorological measurements made at the Swiss Fluxnet site Crap Alv/ Alp Weissenstein during the period of interest. The variable names in the header have the following content/meaning: TIMESTAMP Timestamp end of the averaging period (10-min averages) Times are in CET (UTC + 1 hour) YEAR Year (also included in the TIMESTAMP) DOY Day of Year (1 = 1 January) HOUR Hour of day (also included in the TIMESTAMP) MINUTE Minute in the hour (also included in the TIMESTAMP) Battery Battery/supply voltage to the Campbell CR1000 data logger [V] AirTC Air temperature [°C] AirRH Air relative humidity [%] SoilT Soil Temperature [°C] SWC Volumetric soil water content [m3 m-3] WP_kPa Soil water potential [kPa] SoilHF Soil heat flux [W m-2] Kin Short-wave incoming solar radiation, global radiation [W m-2] Lin Long-wave incoming radiation relative to instrument temperature [W m-2] Kout Short-wave reflected solar radiation [W m-2] Lout Long-wave emitted radiation relative to instrument temperature [W m-2] T_CNR1 Temperature of Kipp & Zonen CNR1 four-way radiometer [°C] PPFD Photosynthetic photon flux density [µmol m-2 s-1] PPFD_refl Reflected photosynthetic photon flux density [µmol m-2 s-1] Shunt1 Shunt voltage (a measure of battery power consumption - not used) [V] LithiumV Internal lithium backup battery voltage [V] Lin_corr Absolute long-wave incoming radiation [W m-2] Lout_corr Absolute long-wave emitted radiation [W m-2] NetRad All-wave net radiation [W m-2] Tsurf_rad Surface temperature back-calculated from Lout [°C] CH-DAV-060secs-DIR.csv Aggregated wind direction from 20-Hz eddy covariance measurements at Davos of Swiss fluxnet. Data were aggregated to 60-minute means. Used in Figure 7. The variable names in the header have the following content/meaning: Period Internal variable for aggregating the data from the three days of interest (2 days before the eclipse, plus day of eclipse) DIR.March.18 Wind direction on 18 March 2015, 2 days before eclipse DIR.March.19 Wind direction on 19 March 2015, 1 day before eclipse DIR.March.20 Wind direction on 20 March 2015, the day of the eclipse TIMESTAMP The date and time for the day with the eclipse; subtract 1 day to get date and time for DIR.March.19; subtract 2 days to get date and time for DIR.March.18 Times are in CET (UTC + 1 hour) loess.March.18 The local polynomial regression (loess) fits for each of the loess.March.19 days of interest are added to the original data since the loess.March.20 rotation from 0 to 360° required data transformation (this was not necessary for CH-AWS-060secs-DIR.csv, hence these three columns were not included in the CH-AWS dataset) CH-DAV-Meteo-01min.csv Meteorological measurements made at the Swiss Fluxnet site Davos during the period of interest. The variable names in the header have the following content/meaning: TIMESTAMP The date and time for the day with the eclipse Times are in CET (UTC + 1 hour) Batt_V Battery/supply voltage to the Campbell CR1000 data logger [V] Tlog2_T1_35m Data logger temperature on top of the tower (35 m level) [°C] SWin_T1B3_35m_1_Avg Short-wave incoming radiation, 35 m level [W m-2] LWin_T1B3_35m_1_Avg Long-wave incoming radiation, 35 m level [W m-2] relative to instrument temperature SWout_T1B3_35m_1_Avg Short-wave reflected radiation, 35 m level [W m-2] LWout_T1B3_35m_1_Avg Long-wave emitted radiation, 35 m level [W m-2] relative to instrument temperature TCNR1_T1B3_35m_1_Avg Temperature of Kipp & Zonen CNR1 four-way radiometer [°C] Lin_corr Absolute incoming long-wave radiation [W m-2] Lout_corr Absolute emitted long-wave radiation [W m-2] NetRad All-wave net radiation [W m-2] CH-OE2-Meteo-01min.csv Meteorological measurements made at the Swiss Fluxnet site Oensingen Cropland during the period of interest. Used in Figures 2 and 3. The variable names in the header have the following content/meaning: TIMESTAMP Timestamp end of the averaging period (10-min averages) Times are in CET (UTC + 1 hour) ID An identification number of the old Campbell CR10X data logger YEAR Year (also included in the TIMESTAMP) DOY Day of Year (1 = 1 January) TIME Hour and Minute in HHMM format (end of period) SoilM1_05 Volumetric soil water content at 0.05 m depth [m3 m-3] SoilM2_15 Volumetric soil water content at 0.15 m depth [m3 m-3] SoilM3_30 Volumetric soil water content at 0.30 m depth [m3 m-3] SoilM4_50 Volumetric soil water content at 0.50 m depth [m3 m-3] SoilT_A Soil temperature average 0.00-0.05 m, sensor A [°C] SoilT_B Soil temperature average 0.00-0.05 m, sensor B [°C] SoilT_C Soil temperature average 0.00-0.05 m, sensor C [°C] SoilT_D Soil temperature average 0.00-0.05 m, sensor D [°C] SoilT_05 Soil temperature at 0.05 m depth [°C] SoilT_10 Soil temperature at 0.10 m depth [°C] SoilT_15 Soil temperature at 0.15 m depth [°C] SoilT_30 Soil temperature at 0.30 m depth [°C] SoilT_50 Soil temperature at 0.50 m depth [°C] SHF_A Soil heat flux at 0.05 m depth, sensor A [W m-2] SHF_B Soil heat flux at 0.05 m depth, sensor B [W m-2] SHF_C Soil heat flux at 0.05 m depth, sensor C [W m-2] SHF_D Soil heat flux at 0.05 m depth, sensor D [W m-2] Temp_air Air temperature [°C] RelHum Air relative humidity [%] PPFD Total (diffuse and direct) photosynthetic photon flux density [µmol m-2 s-1] PPFDdiff Diffuse photosynthetic photon flux density [µmol m-2 s-1] Kin Short-wave incoming solar radiation, global radiation [W m-2] Lin Long-wave incoming radiation relative to instrument temperature [W m-2] Kout Short-wave reflected solar radiation [W m-2] Lout Long-wave emitted radiation relative to instrument temperature [W m-2] T_CNR1 Temperature of Kipp & Zonen CNR1 four-way radiometer [°C] Windspeed Cup anemometer wind speed [m s-1] Winddir Wind vane wind direction [°] SoilM1_05_SD all the variables that end on _SD contain the standard deviation SoilM2_15_SD of the measurements of the corresponding variable in the SoilM3_30_SD list above SoilM4_50_SD SoilT_A_SD SoilT_B_SD SoilT_C_SD SoilT_D_SD SoilT_05_SD SoilT_10_SD SoilT_15_SD SoilT_30_SD SoilT_50_SD SHF_A_SD SHF_B_SD SHF_C_SD SHF_D_SD Temp_air_SD RelHum_SD PPFD_SD PPFDdiff_SD Kin_SD Kout_SD Lin_SD Lout_SD T_CNR1_SD Windspeed_SD Winddir_SD Windspeed_S Scalar average wind direction [m s-1] Windspeed_U Vectorially averaged wind direction [m s-1] Winddir_DU Vectorially averaged wind direction [°] Winddir_SDU Standard deviation of the vectorially averaged wind direction [°] Licor_12V Voltage supply control of the Licor IRGA [V] Precip Rainfall [mm] Battery Battery/supply voltage to the Campbell CR1000 data logger [V] LiBatt_V Internal lithium backup battery voltage [V] Lin_corr Absolute long-wave incoming radiation [W m-2] Lout_corr Absolute long-wave emitted radiation [W m-2] NetRad All-wave net radiation [W m-2] CH-OE2_PHENOCAM_T2_3_1-Images.zip In this ZIP file all available phenocam images during the period of interest are made available. --------------------------------------------------------------------------------- (End of 00-README.txt)