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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: 5546

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: 6650

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: 7875

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: 6267

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: 7610

Why are there missing GRACE data?

The batteries onboard GRACE have degraded over time so the instrument is turned off when the satellite is in eclipse (in Earth's shadow) and turned back on when in sunlight since the batteries are solar charged.
by podaac
Mon Apr 07, 2014 12:00 pm
 
Forum: Gravity FAQ
Topic: Why are there missing GRACE data?
Replies: 0
Views: 1512

JPL/GFZ/CSR GRACE L3 RL06 Monthly Ocean/Land Mass Anomaly...

JPL/GFZ/CSR GRACE Level 3 RL06 Monthly Ocean/Land Mass Anomaly Datasets Release DOI: 10.5067/TELND-3AJ06 10.5067/TEOCN-3AJ06 10.5067/TELND-3AC06 10.5067/TEOCN-3AC06 10.5067/TELND-3AG06 10.5067/TEOCN-3AG06 PO.DAAC is pleased to ...
by podaac
Tue Jul 09, 2019 10:29 am
 
Forum: PODAAC General Announcements
Topic: JPL/GFZ/CSR GRACE L3 RL06 Monthly Ocean/Land Mass Anomaly...
Replies: 0
Views: 1166

New Animation-Ocean/Land Mass Anomaly from GRACE (2002-2017)

Animation of the ocean/land mass anomaly over the period April 2002 to June 2017 from the JPL GRACE MASCON RL06M CRI dataset. The dataset can be accessed from PODAAC Portal at https://podaac.jpl.nasa.gov/dataset/TELLUS_GRACE_MASCON_CRI_GRID_RL06_V1 (DOI:10.5067/TEMSC-3MJC6) ...
by podaac
Thu Aug 15, 2019 2:04 pm
 
Forum: Animations
Topic: New Animation-Ocean/Land Mass Anomaly from GRACE (2002-2017)
Replies: 0
Views: 1016

Re: passing time of the GRACE satellite

Thank you for your inquiry. Please see the following response from the GRACE science team: Neither GRACE nor GRACE-FO have a repeat orbit, so there is no such thing as a specific time at which the satellites pass over a specific location during the month. The ...
by podaac
Mon Aug 26, 2019 9:29 am
 
Forum: General Questions
Topic: passing time of the GRACE satellite
Replies: 1
Views: 6267

JPL/GFZ/CSR GRACE & GRACE-FO L3 Monthly Ocean Mass Anom RL06

JPL/GFZ/CSR GRACE and GRACE-FO Level 3 Monthly Ocean Mass Anomaly RL06 version 02 Datasets Release DOI: 1. https://doi.org/10.5067/TEOCN-3AJ62 2. https://doi.org/10.5067/TEOCN-3AC62 3. https://doi.org/10.5067/TEOCN-3AG62 4. https://doi.org/10.5067/GFOCN-3AJ62 ...
by podaac
Mon Oct 28, 2019 11:09 am
 
Forum: PODAAC General Announcements
Topic: JPL/GFZ/CSR GRACE & GRACE-FO L3 Monthly Ocean Mass Anom RL06
Replies: 0
Views: 1090
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