{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:25.972228", "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": "2018-Apr-23_to_2018-Apr-28_143.0_-18.0"}, "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": 2018040000945}, "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 23 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 28 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 97497.9484642483}, "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": ["Australia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Australia"]}, "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": -18.0}, "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": 143.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "143.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 145.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.47, -17.47], [142.82, -17.32], [142.97, -16.97], 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[142.0, -18.25], [141.47, -18.03], [141.25, -17.5], [141.47, -16.97], [141.82, -16.82], [141.97, -16.47], [142.5, -16.25]]]]}, "2018-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.32, -16.32], [142.47, -15.97], [143.0, -15.75], [143.25, -15.85], [143.5, -15.75], [143.8, -15.87], [143.85, -15.75], [143.75, -15.5], [143.85, -15.25], [143.75, -15.0], [143.85, -14.75], [143.75, -14.5], [143.97, -13.97], [144.5, -13.75], [145.03, -13.97], [145.18, -14.32], [145.53, -14.47], [145.75, -15.0], [145.65, -15.25], [145.75, -15.5], [145.65, -15.75], [145.75, -16.0], [145.65, -16.25], [145.68, -16.32], [146.03, -16.47], [146.25, -17.0], [146.03, -17.53], [145.68, -17.68], [145.53, -18.03], [145.18, -18.18], [145.04, -18.5], [145.25, -19.0], [145.03, -19.53], [144.5, -19.75], [144.25, -19.65], [144.0, -19.75], [143.47, -19.53], [143.32, -19.18], [143.25, -19.15], [143.0, -19.25], [142.47, -19.03], [142.25, -18.5], [142.35, -18.25], [142.3, -18.12], [142.0, -18.25], 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"2018-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.0, -15.75], [143.53, -15.97], [143.7, -16.37], [144.0, -16.25], [144.53, -16.47], [144.75, -17.0], [144.53, -17.53], [144.0, -17.75], [143.57, -17.57], [143.75, -18.0], [143.53, -18.53], [143.0, -18.75], [142.47, -18.53], [142.25, -18.0], [142.38, -17.7], [141.97, -17.53], [141.75, -17.0], [141.97, -16.47], [142.32, -16.32], [142.47, -15.97], [143.0, -15.75]], [[143.3, -17.12], [143.18, -17.18], [143.13, -17.3], [143.43, -17.43], [143.3, -17.12]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.374418191288612}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2597946134886904}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.66191874296726, 22.45209803118661, 22.67281452682522, 22.654721553939112, 22.51243797559181, 24.49365666921085]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.067557676969955, 19.212911576887052, 19.40300792679949, 19.427025899758576, 19.4849840246697, 23.547486342663206]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0666610010713007, -2.2447881123295237, -2.251974282524586, -2.2150749423072646, -2.3856652127543962, -2.2828426277423404]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.400327194663987, -3.165442968000491, -3.374418191288612, -2.9179598933157536, -2.9749674129380423, -2.846094813050854]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": 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