SHARE THIS PAGE
Please contact us if there are any discrepancies or inaccuracies found below.
| DOI | 10.5067/GFL1B-ASJ04 |
| Short Name | GRACEFO_L1B_ASCII_GRAV_JPL_RL04 |
| Description | FOR EXPERT USE ONLY. The GRACE-FO Level-1B data provide all necessary inputs to derive monthly time variations in the Earth gravity field. Level-1B data are also used for GRACE orbit and mean gravity field determination. For a detailed description, please see the GRACE-FO Level-1 documentation. |
| Version | 4 |
| Dataset Type | OPEN |
| Measurement | SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY |
| Processing Level | 1B |
| Coverage | Region: Global Northernmost Latitude: 89 degrees Southernmost Latitude: -89 degrees Westernmost Longitude: -180 degrees Easternmost Longitude: 180 degrees Time Span: 2018-May-22 to Present Granule Time Span: 2018-May-22 to 2020-Jun-11 |
| Resolution | Spatial Resolution: 0 km (Along) x 0 km (Across) |
| Projection | Type: Spherical Detail: N/A Ellipsoid: WGS 84 |
| Latency | hours |
| Swath Width | -1 km |
| Sample Frequency | - |
| Temporal Repeat (Nominal) | - |
| Temporal Repeat (Min) | - |
| Temporal Repeat (Max) | - |
| Platform/Sensor | GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: -1 minutes Inclination Angle: 89 degrees Ascending Node: 1970-Jan-01 00:00:00 GRACE-FO ACC SENSOR Name: GRACE-FO SuperSTAR Accelerometer (GRACE-FO ACC) Swath Width: -1 km Description: The accelerometer, located at the center of mass of each satellite, measures all non-gravitational forces acting on each satellite. These forces include air drag, solar radiation pressure, and attitude control activator operation. GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: -1 minutes Inclination Angle: 89 degrees Ascending Node: 1970-Jan-01 00:00:00 GRACE-FO KBR SENSOR Name: GRACE-FO K-Band Ranging System (GRACE-FO KBR) Swath Width: -1 km Description: This instrument precisely measures the changes in the separation between the two GRACE satellites using phase tracking of K- and Ka-band signals sent between the two satellites GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: -1 minutes Inclination Angle: 89 degrees Ascending Node: 1970-Jan-01 00:00:00 GRACE-FO LRI SENSOR Name: GRACE-FO Laser Ranging Interferometer (GRACE-FO LRI) Swath Width: -1 km Description: The laser ranging interferometer (LRI) on board GRACE-FO measures the distance between the two satellites GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: -1 minutes Inclination Angle: 89 degrees Ascending Node: 1970-Jan-01 00:00:00 GRACE-FO SCA SENSOR Name: GRACE-FO Star Camera Assembly (GRACE-FO SCA) Swath Width: -1 km Description: The SCA (Star Camera Assembly) consists of three temperature controlled CCD star cameras mounted to the accelerometer, along with the respective baffle assemblies. The STR delivers its video frames to the OBC, which then computes the attitude quaternions. The OBC also acts as the power and command/control interface to the STR. Once switched on and initialized, the STR proceeds with automatic coarse attitude acquisition and then on to fine attitude derivation. |
| Project | GRACE Follow-On (GRACE-FO) |
| Data Provider | Creator: GRACE-FO Release Place: JPL Release Date: 2019-May-30 Resource: https://podaac-tools.jpl.nasa.gov/drive/files/allData/gracefo/docs/ |
| Keyword(s) | GRACE-FO, GFO, gravity, RL04 |
| Persistent ID | PODAAC-GFL1B-ASJ04 |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
| PO.DAAC DRIVE | https://podaac-tools.jpl.nasa.gov/drive/files/allData/gracefo/L1B/JPL/RL04/ASCII |
| Format (Compression) | ASCII (GZIP) |
| Web Service | https://podaac.jpl.nasa.gov/ws/search/granule/?datasetId=PODAAC-GFL1B-ASJ04 (Search Granule) |
| User's Guide | |
| Level-1 Handbook | https://podaac-tools.jpl.nasa.gov/drive/files/allData/gracefo/docs/GRACE-FO_L1_Handbook.pdf GRACE-FO Level 1B Data Product User Handbook |
| Additional Sites | |
| GRACE-FO Project | https://gracefo.jpl.nasa.gov/ GRACE-FO Mission Page |
| Citation | GRACE-FO. 2019. GRACE-FO Level-1B Release version 4.0 from JPL in ASCII. Ver. 4. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/GFL1B-ASJ04.
For more information see Data Citations and Acknowledgments.
|
|||||||
| Journal Reference | Wen, Kruizinga, Paik, Landerer, Bertiger, Sakumura, Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Level-1 Data Product User Handbook, JPL Publication D-56935, ftp://podaac-ftp.jpl.nasa.gov/allData/gracefo/docs/GRACE-FO_L1_Handbook_JPL-D-56935_20190521.pdf | |||||||
