lucabrocca78
commented
5 years ago Data are stored as time series at multiple locations as the grid is irregular and only available over land
Closed iacopoff closed 5 years ago
lucabrocca78
commented
5 years ago Data are stored as time series at multiple locations as the grid is irregular and only available over land
Hi, if I may, I was wondering what is the reason to have a data structure with "locations" as dimension and not "latitude" and "longitude".
` ncdump -h SM2RAIN_ASCAT_0125_2007.nc netcdf SM2RAIN_ASCAT_0125_2007 { dimensions: time = 365 ; locations = 839826 ; variables: float Time(time) ; Time:long_name = "Time of measurement" ; Time:standard_name = "Time" ; Time:units = "Days since 1-Jan-2000" ; float Longitude(locations) ; Longitude:long_name = "location longitude" ; Longitude:standard_name = "Longitude" ; Longitude:units = "degrees_east" ; Longitude:valid_range = -180., 180. ; float Latitude(locations) ; Latitude:long_name = "location latitude" ; Latitude:standard_name = "Latitude" ; Latitude:units = "degrees_north" ; Latitude:valid_range = -90., 90. ; float Rainfall(locations, time) ; Rainfall:_FillValue = -9999.f ; Rainfall:long_name = "Daily rainfall in mm" ; Rainfall:standard_name = "Daily rainfall" ; Rainfall:units = "mm/day" ; byte Conf_flag(locations) ; Conf_flag:long_name = "Confidence flag" ; Conf_flag:flag_meanings = "Low_quality_SM Topographic_complexity>30% Bad_surface_state_flag" ; Conf_flag:flag_masks = 1., 2., 4. ; Conf_flag:valid_range = 0., 7. ; byte ssf(locations, time) ; ssf:long_name = "surface state flag based on ERA5 soil temperature" ; ssf:standard_name = "surface state flag" ; ssf:flag_meanings = "unfrozen frozen_temporary frozen" ; ssf:flag_masks = 0., 1., 2. ; ssf:valid_range = 0., 2. ;
// global attributes: :title = "ASCAT Soil moisture-derived rainfall using SM2RAIN" ; :creation_time = "13-Mar-2019 08:47:06" ; :creator_institution = "National Research Council - Research Institute for Geo-hydrological Protection (CNR-IRPI)" ; :creator_institution_e-mail = "idrologia@irpi.cnr.it" ; :calibration = "Two different calibration has been performed using as benchmark model data from ERA5, for the data before and after 2013 (because of the introduction of Metop-B)." ; :correction = "A climatological adjustment using model data from ERA5 have been applied to the dataset, using the monthly data between 2000 and 2018" ; :Temporal_interval = "Jan-01-2007 to Dec-31-2007" ; :Acknowledgements = "Global SM2RAIN project (contract n.EUM/CO/17/4600001981/BBo)" ; } `
thanks,
iacopo