Search found 157 matches

by asdc_user_services
Mon Jan 06, 2020 11:15 am America/New_York
Forum: Home
Question: Calipso Level 2 Aerosol profile night flags
Replies: 2

Re: Calipso Level 2 Aerosol profile night flags

On Jan 2, 2020 Brian Getzewich (Calipso Team) responded Profile time in the Lidar Level 2 Aerosol Profile product is reported in both TAI and UTC format….the definitions are below. Profile_Time Time, expressed in International Atomic Time (TAI). Units are in seconds, starting from January 1, 1993. ...
by asdc_user_services
Mon Jan 06, 2020 10:56 am America/New_York
Forum: Home
Question: Calipso Level 2 Aerosol profile night flags
Replies: 2

Re: Calipso Level 2 Aerosol profile night flags

On Jan 6, 2020 Brian Getzewich (Calipso Team) responded CALIPSO is roughly a 90-minute orbit, 45 minutes in day and 45 minutes in night. For instance, if you look at the browse images below and look at the left most column the map is white for day and brown for night. The orbit tracks in the upper ...
by asdc_user_services
Fri Jan 03, 2020 2:35 pm America/New_York
Forum: Home
Question: CERES associated parameters
Replies: 1

Re: CERES associated parameters

Access the full parameter list and temporal coverage of available data sets by selecting each individual product on the CERES Data and Information page here: https://asdc.larc.nasa.gov/project/CERES
by asdc_user_services
Fri Jan 03, 2020 2:34 pm America/New_York
Forum: Home
Question: CERES land classification
Replies: 1

Re: CERES land classification

Surf Index, CERES Surface Type: 1 Evergreen Needle Forest 2 Evergreen Broadleaf Forest 3 Deciduous Needle Forest 4 Deciduous Broadleaf Forest 5 Mixed Forest 6 Closed Shrubs 7 Open Shrubs 8 Woody Savannas 9 Savannas 10 Grassland 11 Wetlands 12 Crops 13 Urban 14 Crop/Mosaic 15 Permanent Snow/Ice 16 Ba...
by asdc_user_services
Fri Jan 03, 2020 2:30 pm America/New_York
Forum: Home
Question: CERES data types
Replies: 1

Re: CERES data types

data type, default value:
1 byte integer, 127
2 byte integer, 32767
4 byte integer, 2147483647
4 byte real, 3.402823E+38
8 byte real, 1.7976931E+38
by asdc_user_services
Fri Jan 03, 2020 2:26 pm America/New_York
Forum: Home
Question: CERES spatial and temporal extent
Replies: 1

Re: CERES spatial and temporal extent

CERES is a global data set whose satellite orbit determines the spatial coverage at the surface. Satellites, Instruments, MinLat MaxLat MinLon MaxLon Spatial Altitude, Temporal Range: NPP, FM5, -90 90 -180 180, 824 km, Feb 2012 - present Aqua, FM3 & FM4, -90 90 -180 180, 705 km, Jun 2002 - prese...
by asdc_user_services
Fri Jan 03, 2020 2:25 pm America/New_York
Forum: Home
Question: CERES modes
Replies: 1

Re: CERES modes

Fixed Azimuth Plane Scanning (FAPS) has scan lines perpendicular to the path of the satellite, while Rotating Azimuth Plane Scan (RAPS) lines are at a wide range of angles with respect to the satellite's path. An instrument operating in RAPS has increased spectral darkening of the transmissive optic...
by asdc_user_services
Fri Jan 03, 2020 2:24 pm America/New_York
Forum: Home
Question: CERES modes
Replies: 1

Re: CERES modes

The NPP platform carries the FM5 instrument, which operates in the fixed azimuth scanning mode though it can operate in a rotating azimuth scanning mode. The Terra and Aqua satellites carry two CERES instruments onboard, one in Cross-Track mode and the other in Rotating Azimuth Plane Scan (RAPS) mod...
by asdc_user_services
Fri Jan 03, 2020 2:14 pm America/New_York
Forum: Home
Question: CERES FOV and Footprint
Replies: 1

Re: CERES FOV and Footprint

The CERES Field of View (FOV) is synonymous with the term Footprint and is determined by the Point Spread Function (PSF) which is a two-dimensional, bell-shaped function that defines the CERES instrument response to the viewed radiation field. The resolution of the CERES radiometers is usually refer...
by asdc_user_services
Fri Jan 03, 2020 2:14 pm America/New_York
Forum: Home
Question: CERES equator crossing time
Replies: 1

Re: CERES equator crossing time

Aqua has a 1:30 PM equator crossing time.
Terra has a 10:30 AM equator crossing time.