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Re: How to quantify GRACE uncertainty?

Hi,

Scale factors, measurement and leakage errors were shared in the previous release (Level 3, RL-05). However, these are not available in the current GRACE and GRACE-FO datasets. Has any information been shared on how to calculate the uncertainty in the TWS data?

Thanks a lot.
by assilina
Sun Apr 26, 2020 2:22 pm
 
Forum: General Questions
Topic: How to quantify GRACE uncertainty?
Replies: 4
Views: 8128

Why do I need GRACE Tellus Mascon Scale Factors?

Using 3-degree mascons as a basis function acts as an inherent smoother on the data. Therefore, the GRACE/Tellus Project has derived a set of scale factors (what are also referred to as global gain factors) to aid in the interpretation of signals at sub-mascon resolution. ...
by dmoroni
Tue Mar 08, 2016 2:26 pm
 
Forum: Gravity FAQ
Topic: Why do I need GRACE Tellus Mascon Scale Factors?
Replies: 0
Views: 7667

Where can I obtain a list of science publications for GRACE?

The following link provides a list of relevant GRACE and Tellus publications through peer-reviewed science journals: http://grace.jpl.nasa.gov/publications/ Note: this list is not maintained by PO.DAAC. For any questions or concerns about this list, ...
by dmoroni
Tue Mar 08, 2016 2:35 pm
 
Forum: Gravity FAQ
Topic: Where can I obtain a list of science publications for GRACE?
Replies: 0
Views: 9113

passing time of the GRACE satellite

How can i know the passing time of the GRACE satellite over a location? Particularly in the following coordinates, latitudes 13.5,14.5,15.5 and longitudes 76.5,77.5,78.5
by jyolsna
Tue Aug 20, 2019 1:36 am
 
Forum: General Questions
Topic: passing time of the GRACE satellite
Replies: 1
Views: 8224

Re: Suitable Location for Bathymetry Data?

Thank you very much Wenhao. I appreciate the info. :D Hi Lewis, You could try to look at the JPL TELLUS GRACE-FO Level-3 Monthly Ocean Bottom Pressure Anomaly (https://podaac.jpl.nasa.gov/dataset/TELLUS_GRFO_L3_JPL_RL06_OCN_v03) and JPL Mascon (https://podaac.jpl.nasa.gov/dataset/TELLUS_GRAC-GRFO_MASCON_CRI_GRID_RL06_V2) ...
by lmcgibbn
Wed May 19, 2021 10:39 am
 
Forum: General Questions
Topic: Suitable Location for Bathymetry Data?
Replies: 4
Views: 2505

Re: GRACE Global Groundwater Data

There is no official "GRACE Global Groundwater Data”. What one does is get the GRACE Total Terrestrial Water Storage Anomaly (TWSA). For example: https://podaac-opendap.jpl.nasa.gov/opendap/allData/tellus/L3/mascon/RL05/JPL/CRI/netcdf/ ...
by mgierach
Tue Mar 27, 2018 9:03 am
 
Forum: General Questions
Topic: GRACE Global Groundwater Data
Replies: 1
Views: 8599

Re: Strange Range Values in GRACE KBR Data

Hi Samuel, Thanks for the nice note. To get to the heart of your question: we simply don’t measure absolute range with the K/Ka-Band ranging system. You can use this data to determine how the relative range of the two spacecraft changes over time, but keep in mind there is an absolute bias between t...
by podaac
Thu Mar 28, 2019 10:39 am
 
Forum: Data Access
Topic: Strange Range Values in GRACE KBR Data
Replies: 1
Views: 4921

Complete historical records of GRACE Level-2 RL06 datasets

The PO.DAAC is pleased to announce that the complete historical data records of GRACE Level 2 Release 06 (RL06) datasets are available. The complete records include all available historical data from April 2002 to June 2017. The initial publications for the RL06 ...
by podaac
Wed Apr 10, 2019 4:01 pm
 
Forum: PODAAC General Announcements
Topic: Complete historical records of GRACE Level-2 RL06 datasets
Replies: 0
Views: 981

New Animation: GRACE and GRACE FO: Observations of Greenland

GRACE and GRACE FO: Observations of Greenland Ice Mass Changes Animation of the Greenland ice mass changes over the period April 2002 to August 2020 created from Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On ...
by podaac
Thu Mar 25, 2021 12:37 pm
 
Forum: Animations
Topic: New Animation: GRACE and GRACE FO: Observations of Greenland
Replies: 0
Views: 1107

New Animation: GRACE and GRACE FO: Observations of Antarctic

GRACE and GRACE FO: Observations of Antarctic Ice Mass Changes Animation of the Antarctic ice mass changes over the period April 2002 to August 2020 created from Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On ...
by podaac
Thu Mar 25, 2021 12:38 pm
 
Forum: Animations
Topic: New Animation: GRACE and GRACE FO: Observations of Antarctic
Replies: 0
Views: 1310
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