Datastream : TSISKYCOVER

Total Sky Imager (TSI): fractional sky coverage

Active Dates
2000.07.02 - 2014.04.13

Measurement Categories
Cloud Properties

Originating Instrument
Total Sky Imager (TSI)

Measurements

Only measurements considered scientifically relevant are shown below by default.

Show all measurements

Measurement Units Variable
altitude m alt
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Pixel count: number in box, outside mirror area pixels count_box ( time )
Pixel count: number in camera and sun strip mask pixels count_mask ( time )
Pixel count: number total opaque pixels count_opaque ( time )
Pixel count: number total in processed circle pixels count_sky ( time )
Pixel count: number below horizon in image pixels count_sub_horz ( time )
Pixel count: number total between horizon and processed circle pixels count_sub_proczen ( time )
Pixel count: number total thin pixels count_thin ( time )
Pixel count: number total indeterminate pixels count_unknown ( time )
North latitude degree_N lat
east longitude degrees lon
Percent opaque cloud % percent_opaque ( time )
Percent thin cloud % percent_thin ( time )
Quality check results on field: Pixel count: number in box, outside mirror area unitless qc_count_box ( time )
Quality check results on field: Pixel count: number in camera and sun strip mask unitless qc_count_mask ( time )
Quality check results on field: Pixel count: number total opaque unitless qc_count_opaque ( time )
Quality check results on field: Pixel count: number total in processed circle unitless qc_count_sky ( time )
Quality check results on field: Pixel count: number below horizon in image unitless qc_count_sub_horz ( time )
Quality check results on field: Pixel count: number total between horizon and processed circle unitless qc_count_sub_proczen ( time )
Quality check results on field: Pixel count: number total thin unitless qc_count_thin ( time )
Quality check results on field: Pixel count: number total indeterminate unitless qc_count_unknown ( time )
Quality check results on field: Percent opaque cloud unitless qc_percent_opaque ( time )
Quality check results on field: Percent thin cloud unitless qc_percent_thin ( time )
Quality check results on field: Pixel count: number total in horizon area unitless qc_region_horizon_count ( time )
Quality check results on field: Pixel count: number opaque in horizon area unitless qc_region_horizon_count_opaque ( time )
Quality check results on field: Pixel count: number thin in horizon area unitless qc_region_horizon_count_thin ( time )
Quality check results on field: Pixel count: number total in sun circle unitless qc_region_sun_count ( time )
Quality check results on field: Pixel count: number opaque in sun circle unitless qc_region_sun_count_opaque ( time )
Quality check results on field: Pixel count: number thin in sun circle unitless qc_region_sun_count_thin ( time )
Quality check results on field: Pixel count: number total in zenith circle unitless qc_region_zenith_count ( time )
Quality check results on field: Pixel count: number opaque in zenith circle unitless qc_region_zenith_count_opaque ( time )
Quality check results on field: Pixel count: number thin in zenith circle unitless qc_region_zenith_count_thin ( time )
Quality check results on field: Sun altitude above horizon unitless qc_solar_altitude ( time )
Quality check results on field: Solar azimuth angle unitless qc_solar_azimuth ( time )
Quality check results on field: Relative 'strength' of direct sun unitless qc_sun_strength ( time )
Quality check results on field: Sunshine meter unitless qc_sunny ( time )
Quality check results on field: Time offset from midnight unitless qc_time ( time )
Pixel count: number total in horizon area pixels region_horizon_count ( time )
Pixel count: number opaque in horizon area pixels region_horizon_count_opaque ( time )
Pixel count: number thin in horizon area pixels region_horizon_count_thin ( time )
Pixel count: number total in sun circle pixels region_sun_count ( time )
Pixel count: number opaque in sun circle pixels region_sun_count_opaque ( time )
Pixel count: number thin in sun circle pixels region_sun_count_thin ( time )
Pixel count: number total in zenith circle pixels region_zenith_count ( time )
Pixel count: number opaque in zenith circle pixels region_zenith_count_opaque ( time )
Pixel count: number thin in zenith circle pixels region_zenith_count_thin ( time )
Sun altitude above horizon degrees solar_altitude ( time )
Solar azimuth angle degrees solar_azimuth ( time )
Relative 'strength' of direct sun unitless sun_strength ( time )
Sunshine meter unitless sunny ( time )
Time offset from midnight seconds since 2010-08-24 00:00:00 0:00 time ( time )
Time offset from base_time seconds since 2010-08-24 00:00:00 0:00 time_offset ( time )

Locations

Eastern North Atlantic
ENAC1Browse DataGraciosa Island, Azores, Portugal
North Slope Alaska
NSAC1Browse DataCentral Facility, Barrow AK
NSAX1Browse DataExternal Data (satellites and others)
Southern Great Plains
SGPC1Browse DataCentral Facility, Lamont, OK
Tropical Western Pacific
TWPC1Browse DataCentral Facility, Manus I., PNG
TWPC2Browse DataCentral Facility, Nauru Island
TWPC3Browse DataCentral Facility, Darwin, Australia
ARM Mobile Facility
FKBM1Browse DataBlack Forest, Germany
GANM1Browse DataGan Airport, Gan Island, Maldives
GRWM1Browse DataGraciosa Island, Azores, Portugal
HFEM1Browse DataShouxian, Anhui, China
MAGM1Browse DataLos Angeles, CA to Honolulu, HI - container ship Horizon Spirit
MAOM1Browse DataManacapuru, Amazonas, Brazil; AMF1
NIMM1Browse DataNiamey, Niger
OLIM1Browse DataOliktok Point, Alaska
PGHM1Browse DataARIES Observatory, Nainital, Uttarkhand, India
PVCM1Browse DataHighland Center, Cape Cod MA; AMF 1
PYEM1Browse DataPoint Reyes, CA
SBSM1Browse DataSteamboat Springs CO, Valley Site
TMPM1Browse DataU. of Helsinki Research Station (SMEAR II), Hyytiala, Finland; AMF2

Contact(s)

Victor Morris
(509) 372-6144
victor.morris@pnnl.gov