{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:12:37.721441", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2020-Apr-01_to_2020-Apr-04_104.5_35.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2020040000043}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "April 01 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 04 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 55809.9187335616}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["China"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 35.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 104.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "104.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 103.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 107.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[103.823, 34.823], [103.47, 34.97], [103.323, 35.323], [102.97, 35.47], [102.75, 36.0], [102.97, 36.53], [103.5, 36.75], [104.0, 36.543], [104.5, 36.75], [105.03, 36.53], [105.177, 36.177], [105.25, 36.146], [105.5, 36.25], [106.03, 36.03], [106.177, 35.677], [106.25, 35.646], [106.5, 35.75], [106.75, 35.646], [107.0, 35.75], [107.53, 35.53], [107.75, 35.0], [107.646, 34.75], [107.75, 34.5], [107.53, 33.97], [107.0, 33.75], [106.75, 33.854], [106.5, 33.75], [106.25, 33.854], [106.177, 33.823], [106.03, 33.47], [105.677, 33.323], [105.53, 32.97], [105.0, 32.75], [104.47, 32.97], [104.323, 33.323], [103.97, 33.47], [103.75, 34.0], [103.854, 34.25], [103.75, 34.5], [103.854, 34.749], [103.854, 34.75], [103.823, 34.823]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-04-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[103.32322330470336, 35.32322330470336], [102.96966991411009, 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"description": "The daily evolution of maximum t2m.", "value": [0.9530110734596065, -1.9679873088604722, -3.3719396931745678, -1.942353776663765]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.207564649702133, -5.761751487581566, -5.8993161639637375, -5.0723006634413155]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.089339221455248, -6.275969693620084, -8.194714021638163, -5.651755884976353]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.539031337206751, -1.665709382633171, -1.7218454689630127, -1.4733631319121425]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7384770351811334, -1.8133022460567745, -2.2950059378851946, -1.6072695354689301]}}