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10 | 10 | "This notebook demonstrates how to query and access cloud-hosted Inter-mission Time Series of Land Ice Velocity and Elevation ([ITS_LIVE](https://its-live.jpl.nasa.gov/#access)) data from Amazon Web Services (AWS) S3 buckets. These data are stored as [Zarr](https://zarr.readthedocs.io/en/stable/) data cubes, a cloud-optimized format for array data. They are read into memory as [Xarray](https://docs.xarray.dev/en/stable/) Datasets.\n", |
11 | 11 | "\n", |
12 | 12 | "```{note}\n", |
13 | | - "This tutorial was updated Jan 2025 to reflect changes to ITS_LIVE data urls and various software libraries\n", |
| 13 | + "This tutorial was updated Jan 2025 to reflect changes to the ITS_LIVE dataset and various software libraries.\n", |
14 | 14 | "```" |
15 | 15 | ] |
16 | 16 | }, |
|
23 | 23 | "\n", |
24 | 24 | "(content:section_A)= \n", |
25 | 25 | "**[A. Overview of ITS_LIVE data]()**\n", |
| 26 | + "- {{a1_its_nb1}}\n", |
| 27 | + "- {{a2_its_nb1}}\n", |
26 | 28 | "\n", |
27 | 29 | "(content:Section_B)=\n", |
28 | 30 | "**[B. Read ITS_LIVE data from AWS S3 using Xarray](#b-read-its_live-data-from-aws-s3-using-xarray)**\n", |
|
5017 | 5019 | "cell_type": "markdown", |
5018 | 5020 | "metadata": {}, |
5019 | 5021 | "source": [ |
5020 | | - "### Data structure overview\n", |
| 5022 | + "### {{a1_its_nb1}}\n", |
5021 | 5023 | "\n", |
5022 | 5024 | "#### Dimensions\n", |
5023 | 5025 | "- This object has 3 *dimensions*, `mid_date`, `x`, and `y`.\n", |
|
5542 | 5544 | "1) Metadata should be added to the `attrs` of an Xarray object so that the dataset is **self-describing** (You or a future user don't need external information to be able to interpret the data).\n", |
5543 | 5545 | "2) Wherever possible, metadata should follow Climate Forecast (CF) naming conventions.\n", |
5544 | 5546 | "\n", |
5545 | | - " ## Climate Forecast (CF) Metadata Conventions\n", |
| 5547 | + " ### {{a2_its_nb1}}\n", |
5546 | 5548 | "\n", |
5547 | 5549 | "CF conventions address many of the challenges of inconsistent and non-descriptive metadata found in climate and earth observation datasets. By establishing common naming schemes for physical quantities and other attributes, these conventions facilitate collaboration, data fusion, and the development of tools for working with a range of data types. \n", |
5548 | 5550 | "\n", |
5549 | 5551 | "From the [CF documentation](https://cfconventions.org/): \n", |
5550 | | - " The CF metadata conventions are designed to promote the processing and sharing of files created with the NetCDF API. The conventions define metadata that provide a definitive description of what the data in each variable represents, and the spatial and temporal properties of the data. This enables users of data from different sources to decide which quantities are comparable, and facilitates building applications with powerful extraction, regridding, and display capabilities. The CF convention includes a standard name table, which defines strings that identify physical quantities.\n", |
| 5552 | + "\n", |
| 5553 | + ">The CF metadata conventions are designed to promote the processing and sharing of files created with the NetCDF API. The conventions define metadata that provide a definitive description of what the data in each variable represents, and the spatial and temporal properties of the data. This enables users of data from different sources to decide which quantities are comparable, and facilitates building applications with powerful extraction, regridding, and display capabilities. The CF convention includes a standard name table, which defines strings that identify physical quantities.\n", |
5551 | 5554 | "\n", |
5552 | 5555 | "CF metadata conventions set common expectations for metadata names and locations across datasets. In this tutorial, we will use tools such as [cf_xarray]() that leverage CF conventions to add programmatic handling of CF metadata to Xarray objects, meaning that users can spend less time wrangling metadata. 🤩\n" |
5553 | 5556 | ] |
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