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gerontocrat

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Satellite News
« on: June 09, 2019, 10:25:41 AM »
Starting this thread with a request - anyone any news on new satellites for NSIDC and JAXA sea ice data?

I am asking because the existing satellites are, I believe, somewhat long in the tooth. Copy of post in sea ice extent data thread below..
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Quote from Gerontocrat

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Quote from: Juan C. García on Today at 06:58:36 AM

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Quote from: Rich on Today at 06:44:08 AM
Are there any plans to reduce the grid size?
There are always new satellites with better resolution. The question is if institutions like NSIDC are going to change the algorithm that they use to measure extent and take full advantage of the new instruments.

Nobody can go back in time and adjust the NSIDC data collected by the instrument on the DMSP satelliteS  to the higher resolution data collected by current instruments and maintain consistency in the record. That is why the graphs using higher-resolution data from the new instruments on the new satellites (e.g. from Wipneus) only go back a few years.

The much greater problem is the inevitability of the NSIDC record dating from 1979 ending. The satellite up there is years beyond its design life and the United States Air Force programme DMSP was killed by Mike Rogers in 2017. The last satellite is now in a museum somewhere.

I asked NSIDC a few months ago what the plan is for when this last satellite fails. The answer was along the lines of "under discussion". It will be a real shame if this unique record is cut short.

As Arctic Sea Ice Shows Record Decline, Scientists Prepare to Go Blind
https://www.newsdeeply.com/oceans/articles/2017/05/30/as-arctic-sea-ice-shows-record-decline-scientists-prepare-to-go-blind

Air Force unveils $500M satellite museum piece
https://www.c4isrnet.com/home/2017/12/22/500m-never-flown-air-force-weather-satellite-goes-on-display/
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And things are not much better at JAXA. JAXA’s GCOM-W1 satellite was launched in 2012 with the Advanced Microwave Scanning Radiometer 2 (AMSR2) on board.

Its design life was 3 to 5 years.
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

b_lumenkraft

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Re: Satellite News
« Reply #1 on: June 09, 2019, 10:38:11 AM »
And there i thought you forgot about it. Silly me.

Thanks for opening this thread Gerontocrat.

ArcticMelt2

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Re: Satellite News
« Reply #2 on: June 09, 2019, 10:53:18 AM »
Recently watched that AMSR3 will start after 2022 (satellite GOSAT-3).

gerontocrat

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Re: Satellite News
« Reply #3 on: June 09, 2019, 03:34:51 PM »
And there i thought you forgot about it. Silly me.

I did forget about it. |Ho hum

GRACE Follow On Project
Below is stuff about data and when data will be available

For my own amusement I pushed some buttons on panoply and got the graph below.  But  do not know that package at all, at all. Some of you know how to do this stuff.

Perhaps simpler stuff will emerge, but I bet I never see data all nicely laid out in a .csv file.
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Finding GRACE-FO data
https://podaac.jpl.nasa.gov/GRACE-FO
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Index of /grace-fo/GravIS/GFZ/Level-3/ICE/
[parent directory]
Name   Size   Date Modified
AIS/      10/04/2019, 20:12:00
GIS/      10/04/2019, 20:12:00
373 kB   11/04/2019, 13:53:00

ftp://isdcftp.gfz-potsdam.de/grace-fo/GravIS/GFZ/Level-3/ICE/

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updates from Potsdam at this link
https://www.gfz-potsdam.de/en/section/global-geomonitoring-and-gravity-field/projects/gravity-recovery-and-climate-experiment-follow-on-grace-fo-mission/
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e-mail from Potsdam

Frank Flechtner
1 Jun 2019, 08:09 (8 days ago)
to me

Dear xxxxxxx,

I advice to visit our GRACE and GRACE-FO archives at GFZ, the Information System and Data Center (ISDC) at https://isdc.gfz-potsdam.de/grace-isdc/ and https://isdc.gfz-potsdam.de/grace-fo-isdc/.

At GRACE (but also GRACE-FO) you can read there: To get access via FTP to the different GRACE Level-1B (instrument and orbit data as well as atmosphere and ocean de-aliasing (AOD) model), Level-2 (gravity models in terms of spherical harmonic coefficients) and Level-3 (user-friendly gridded) data and documentation, (monthly) newsletters and various project related documentation please follow the link "GRACE Gravity Data and Documentation" on the left hand side. The link “News related to GRACE Gravity Data” provides further useful information on recent Level-1B and Level-2 data distribution. The Level-3 data provided at ISDC are based on the most recent GRACE data release from GFZ and are visualized and described at GFZ´s Gravity Information Service (GravIS). 
The Level-2 (and later L3) GRACE-FO products will be available in about 10-14 days. So far only L1 have been made available a week ago. I also ask you to get familiar with the GravIS portal where you should find "ready to use" data also for Greenland and Antarctica.

Best regards

Frank Flechtner

"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

gerontocrat

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Re: Satellite News
« Reply #4 on: June 15, 2019, 10:50:03 PM »
The link below is to a new paper gives a real insight into the measurement of Arctic Sea Ice.
If the writers were business people they would have called it "A SWOT Analysis".

For example the the paper talks at length about the deficiencies and difficulties in the measurement of ice thickness. Loads of stuff about loads of other data types as well.

It also gives more data on the parlous state of the existing satellites used, especially for sea ice extent and area. The only possible stand-by if failure happens soon is a Chinese series of satellites already up there. (Can you see Trump allowing NASA to ask China to bail them out?)
 
https://iopscience.iop.org/article/10.1088/1748-9326/ab09b3
Essential gaps and uncertainties in the understanding of the roles and functions of Arctic sea ice

Really worth a read
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)