Accessing MURR SST data from ERDDAP

[ARFEUILLE GILLES JEAN MICHEL]

Hi there,

I had been using SST data to do some plots and teach my students to work with real time or almost real time data, and so some exploratory research in the Eastern Pacific and corresponding coastal areas.

Last year I was getting 1 km MURSST data from ERDDAP using one of my Python codes and the URL of the type:

https://coastwatch.noaa.gov/erddap/griddap/jplMURSST41.nc?analysed_sst%5B(2026-06-01T00:00:00Z):1:(2026-06-02T00:00:00Z)%5D%5B(4):1:(32)%5D%5B(-120):1:(-85)%5D

But it seems that the dataset are not available anymore this way

I was able to reshape my retrieve functions and get the data from the NOAA Coral Reef Watch Daily Global 5km Satellite SST (CoralTemp) dataset using URL of the type:

 

https://coastwatch.noaa.gov/erddap/griddap/noaacrwsstDaily.nc?analysed_sst%5B(2026-06-02T00:00:00Z)%5D%5B(4):(32)%5D%5B(-120):(-85)%5D

But obviously it is not as the same resolution, I need anyway to dig in the documentation to know exactly what I am looking at

Is there a way to get the SST data for the Eastern Pacific?

I saw on the following page that East Coast and Gulf of America are available but cannot find the global one or one that would include Eastern Pacific coastal regions.

https://coastwatch.noaa.gov/erddap/griddap/index.html?page=1&itemsPerPage=1000

Thanks for any help on that subject

Regards,

Gilles 

[Roy Mendelssohn - NOAA Federal]

i answered this in your direct email, but for the record try:

> https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.nc?analysed_sst%5B(2026-06-01T00:00:00Z):1:(2026-06-02T00:00:00Z)%5D%5B(4):1:(32)%5D%5B(-120):1:(-85)%5D

-Roy

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[ARFEUILLE GILLES JEAN MICHEL]

Hi Roy,

Thanks for your patience

Let's do it directly here then.

these two URLs don't work:

https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.nc?analysed_sst%5B(2026-06-01T00:00:00Z):1:(2026-06-01T00:00:00Z)%5D%5B(4):1:(32)%5D%5B(-120):1:(-85)%5D

https://coastwatch.noaa.gov/erddap/griddap/jplMURSST41.nc?analysed_sst%5B(2026-06-01T00:00:00Z):1:(2026-06-02T00:00:00Z)%5D%5B(4):1:(32)%5D%5B(-120):1:(-85)%5D

I just realized that the one I used last year is the one with the ".pfeg." in it, the one without it was some pocking around I did yesterday.

I was able to get the coral reef 5 km on as mentioned above:

Obviously, the resulting .nc file is not the same size and mapping no so detailed 

Regards

Gilles

[Roy Mendelssohn - NOAA Federal]

I just tested the first URL and it worked for me, and I work from home so I have no special access. Perhaps you have been blocked. Can you tell me if you can reach:

https://thredds1.pfeg.noaa.gov/thredds

Also can you send me the URL that is accessing that URL. To be certain it is the URL seen by the outside world, can you go to https://whatismyipaddress.com/ and tell me the IPv4 number.

Thanks, and apologies that you are having problems.

-Roy

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[ARFEUILLE GILLES JEAN MICHEL]

Hello Roy,

You are right I am being blocked!

I was able to access the links you gave me on Chrome, but not on FireFox where I run my Jupyter notebook with my VPN on

So I tried with the VPN off and it worked just fine

Last year with the VPN on it was OK, not this year

I am in a region of the world where it is useful to use a VPN, so that would be nice to know a work around, but don't want to make anyone waist too much time on this detail

[Roy Mendelssohn - NOAA Federal]

I can try to unblock you if I know the IP. If the IP isn’t fixed, then all bets are off, as someone else may have used that IP, but for starters turn on your VPN, go to the URL that I sent you and it will show your public IP, and I can check what is going on. I am afraid this type of thing will be happening more and more - if you saw our logs it would be immedatiately clear why and these days most of the ones being blocked are coming in from cloud providers such as AWS, GCP and Azure. It is a bit like whack-a-mole, as they just stop and start again with a new IP, but we try our best. Unfortunately legitimate users suffer because of this.

Thanks,

-Roy

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[ARFEUILLE GILLES JEAN MICHEL]

Here is the result for this VPN IP I use:

IPv4: 45.154.138.47

[Roy Mendelssohn - NOAA Federal]

That IP was not blocked directly, but rather at the 45.154.0.0 level. That means we were getting hit all at once by a huge number of bad requests all over that range of IPs. If memory serves they were generating thousands of 429 return codes for too many requests. I have unblocked that, but if this was from your students, please have them include in their code to check the return code, so that they don’t keep sending failing requests.

Good luck in your research and your teaching and thanks for using ERDDAP™.

-Roy

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[ARFEUILLE GILLES JEAN MICHEL]

Hi Roy,

Thanks, for unblocking the IP, if it creates problems please let me know. I just tried and it worked, thanks again.

I also made another code that runs on my institution account, it doesn't go through my VPN so it should be OK, and it also works, it add one step on my side but not really a problem, I can deal with it.

Regards

Gilles