How to use
Overview of this system
This system provides a search function for DIAS datasets, which are managed by the Data Integration and Analysis System (DIAS), and datasets of collaborative systems. DIAS creates metadata for each DIAS dataset in a unified format, and then converts the metadata into user-friendly document (in HTML and PDF), which we call DIAS document. By using DIAS metadata, you can search the datasets by various search criteria. You can also browse the DIAS documents and find download links for datasets that are publicly available.
Search
The system provides keyword and spatio-temporal searches. At the bottom of the top page of the system, datasets are categorized by field and creation method, etc., and you can also search datasets by category.




Keyword search, spatial search and temporal search can be used in combination. In the search result pages, by selecting a specific dataset from the list of datasets, you can browse the document for the dataset. When datasets of collaborative systems are included in the search results, you can select a dataset of a collaborative system and jump to the web page of the dataset in the collaborative system.




The keyword search retrieves datasets in which the entered word appears in the DIAS document. The keyword entry form is divided into several parts, e.g. you can specify that the keyword should match only the dataset title. If you want to match a keyword anywhere in the document, you can enter the keyword in the "All" field. For example, to retrieve datasets related to precipitation, you might enter "precipitation" in the "All" or "Title" or "Abstract" fields. Besides, to retrieve datasets for a specific data provider, you might enter the name of the data provider (e.g., "JAMSTEC") in the "Contact info." field.
Spatial search (search by location) allows you to specify a location intuitively by dragging the mouse to specify a range. By default, "Global" is specified, and specifying "Global" will match all datasets. There are also "overlaps" and "encloses" options; "overlaps" retrieves datasets that have spatial ranges that overlap with the specified range, while "encloses" retrieves datasets that fit within the specified range. For example, in order to search for datasets near Japan, you may select a range near Japan and search for datasets with "overlaps".
Temporal search (search by time period) can retrieve datasets related to a specified period of time. Checking the "Use this condition" option activates the criteria. The "overlaps" option will retrieve datasets with overlapping periods with the specified period, and the "between dates" option will retrieve datasets that fall within the specified period. It is also possible to specify only the start date or only the end date.
At the bottom of the search interface on the top page of this system, datasets are categorized in a matrix according to the field of study or the way they were created, etc. The list of corresponding datasets can be retrieved by clicking on the links in the cells. The classification conditions on the vertical and horizontal axes can be changed.
Download
For DIAS datasets that are open to the public, you can download the data files. For more information on downloading files, please visit the DIAS Data Download System. You must be logged in to download data files. If you do not have a DIAS account, please create a new one.



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