Navigating PACE imagery

[daurin]

My goal is to be able to screen a region (Gulf of Mexico) by day for reasonably cloud-free scenes. NASA Worldview (https://worldview.earthdata.nasa.gov/) appears to have the best interface for this, though I can only find v1 NRT Chl and True Color imagery; still a good start.

Once I find a good day, Worldview does not appear to identify granules or provide a download path to L1B imagery, so I then go to Earthdata Search (https://search.earthdata.nasa.gov/) and select the L1B v2 data product, dial in my date and time, find the image and download it. Alternatively, I go to the OB.DAAC search engine and dial in the date/time, etc. and search, select, and download, though this takes more time.

1) Why does Worldview not show any PACE imagery before April 15?
2) Why does Worldview often show good-looking v1 L2 imagery on many days, but the Earthdata search does not show any L1B data for that day/location (e.g., June 7)?
3) Is there a smarter, faster way to do what I'm trying to do?

-Dirk

[GIBS & Worldview - mwong4]

The PACE imagery in Worldview is currently displaying version 1 (v1) L2 imagery and we are awaiting version 2 L2 imagery from OBDAAC in order to fill out the entire time period back to February 2024. When we have the v2 imagery and it is mapped to the corresponding v2 metadata record in Earthdata Search/Common Metadata Repository, you should be able to go directly from Worldview to Earthdata Search to download the L2 data by clicking on the "Data" tab in Worldview's left side list. It currently does not work with v1 because the v1 metadata records no longer exist. So hopefully that mostly answers bullets 1 and 3. As for bullet 2 and questions related to the L1B data, I think we'll need an OBDAAC representative to answer.

[OB ODPS - towens]

The V2 GIBS imagery were reprocessed from March 5, forward on 7/5 so they can be picked up.
The period between launch and Mar 5 will not be included in V2.

Tommy

[daurin]

[Update: I figured it out. Earthdata requires you to scroll through the results panel to get the granules to show up on the map.]

Thanks to you both for the background.

Still curious why when searching through v1 on Worldview I see imagery over Gulf of Mexico on, e.g., June 7, but when I search for v2 on Earthdata, I come up empty.

Worldview:
https://worldview.earthdata.nasa.gov/?v=-133.7199462901463,-1.5040359095591,-53.63431598501592,50.106703620413825&l=Reference_Labels_15m(hidden),Reference_Features_15m(hidden),Coastlines_15m,OCI_PACE_True_Color,VIIRS_NOAA21_CorrectedReflectance_TrueColor(hidden),VIIRS_NOAA20_CorrectedReflectance_TrueColor(hidden),VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden),MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor&lg=true&t=2024-06-07-T06%3A00%3A00Z

Earthdata:
https://search.earthdata.nasa.gov/search/granules?p=C3026581092-OB_CLOUD&pg[0][v]=f&pg[0][qt]=2024-06-07T00%3A00%3A00.000Z%2C2024-06-07T23%3A59%3A59.999Z&pg[0][gsk]=-start_date&as[platforms][0]=Space-based%20Platforms%3AEarth%20Observation%20Satellites%3A%3APACE&tl=1721931984.718!3!!&fpb0=Space-based%20Platforms&fpc0=Earth%20Observation%20Satellites&fps0=PACE&lat=28.7580855784738&long=-149.1328125

[OB.DAACx - SeanBailey]

Dirk,
Using your link to Earthdata I was able to see data over the Gulf of Mexico just fine...it's there

PACE-gulf-of-mexico.png (470.36 KiB) Not viewed yet

[daurin]

Thanks Sean. Yes, I had updated my reply on Thursday to reflect that I had found the problem to be that the data does not should up on the map unless you scroll down far enough in the thumbnail browser of results. It's odd, but workable once you know.