{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:24.902794", "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": "2021-Nov-04_to_2021-Nov-08_127.0_-16.5"}, "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": 2021110000207}, "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": "November 04 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 08 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 59253.41548844463}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": -16.5}, "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": 127.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "127.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 125.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 128.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[125.82, -15.32], [125.97, -14.97], [126.5, -14.75], [126.75, -14.85], [126.82, -14.82], [126.97, -14.47], [127.5, -14.25], [128.03, -14.47], [128.25, -15.0], [128.15, -15.25], [128.25, -15.5], [128.15, -15.75], [128.25, -16.0], [128.15, -16.25], [128.25, -16.5], [128.15, -16.75], [128.25, -17.0], [128.15, -17.25], [128.18, -17.32], [128.53, -17.47], [128.75, -18.0], [128.65, -18.25], [128.75, -18.5], [128.53, -19.03], [128.0, -19.25], [127.47, -19.03], [127.25, -18.5], [127.35, -18.25], [127.32, -18.18], [127.25, -18.15], [127.0, -18.25], [126.47, -18.03], [126.32, -17.68], [126.0, -17.54], [125.5, -17.75], [124.97, -17.53], [124.75, -17.0], [124.97, -16.47], [125.32, -16.32], [125.35, -16.25], [125.25, -16.0], [125.47, -15.47], [125.82, -15.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.47, -16.53], [125.25, -16.0], [125.47, -15.47], [126.0, -15.25], [126.5, -15.46], [126.82, -15.32], [126.97, -14.97], [127.5, -14.75], [128.03, -14.97], [128.25, -15.5], [128.15, -15.75], [128.25, -16.0], [128.15, -16.25], [128.25, -16.5], [128.15, -16.75], [128.25, -17.0], [128.15, -17.25], [128.25, -17.5], [128.03, -18.03], [127.5, -18.25], [127.25, -18.15], [127.0, -18.25], [126.47, -18.03], [126.32, -17.68], [125.97, -17.53], [125.75, -17.0], [125.88, -16.7], [125.47, -16.53]]]]}, "2021-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.35, -16.25], [125.25, -16.0], [125.47, -15.47], [125.82, -15.32], [125.97, -14.97], [126.5, -14.75], [126.75, -14.85], [126.82, -14.82], [126.97, -14.47], [127.5, -14.25], [128.03, -14.47], [128.25, -15.0], [128.15, -15.25], [128.25, -15.5], [128.15, -15.75], [128.25, -16.0], [128.15, -16.25], [128.25, -16.5], [128.15, -16.75], [128.25, -17.0], [128.15, -17.25], [128.25, -17.5], [128.03, -18.03], [127.5, -18.25], [127.25, -18.15], [127.0, -18.25], [126.47, -18.03], [126.32, -17.68], [126.0, -17.54], [125.5, -17.75], [124.97, -17.53], [124.75, -17.0], [124.97, -16.47], [125.32, -16.32], [125.35, -16.25]]]]}, "2021-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.35, -16.25], [125.25, -16.0], [125.47, -15.47], [125.82, -15.32], [125.97, -14.97], [126.5, -14.75], [126.75, -14.85], [126.82, -14.82], [126.97, -14.47], [127.5, -14.25], [128.03, -14.47], [128.25, -15.0], [128.15, -15.25], [128.25, -15.5], [128.15, -15.75], [128.25, -16.0], [128.15, -16.25], [128.25, -16.5], [128.15, -16.75], [128.25, -17.0], [128.15, -17.25], [128.18, -17.32], [128.53, -17.47], [128.75, -18.0], [128.65, -18.25], [128.75, -18.5], [128.53, -19.03], [128.0, -19.25], [127.47, -19.03], [127.25, -18.5], [127.35, -18.25], [127.32, -18.18], [127.25, -18.15], [127.0, -18.25], [126.47, -18.03], [126.32, -17.68], [126.0, -17.54], [125.5, -17.75], [124.97, -17.53], [124.75, -17.0], [124.97, -16.47], [125.32, -16.32], [125.35, -16.25]]]]}, "2021-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.47, -15.97], [125.82, -15.82], [125.85, -15.75], [125.75, -15.5], [125.97, -14.97], [126.5, -14.75], [126.75, -14.85], [126.82, -14.82], [126.97, -14.47], [127.5, -14.25], [128.03, -14.47], [128.25, -15.0], [128.15, -15.25], [128.25, -15.5], [128.15, -15.75], [128.25, -16.0], [128.15, -16.25], [128.25, -16.5], [128.15, -16.75], [128.25, -17.0], [128.15, -17.25], [128.18, -17.32], [128.53, -17.47], [128.75, -18.0], [128.65, -18.25], [128.75, -18.5], [128.53, -19.03], [128.0, -19.25], [127.47, -19.03], [127.25, -18.5], [127.35, -18.25], [127.32, -18.18], [126.97, -18.03], [126.82, -17.68], [126.47, -17.53], [126.32, -17.18], [126.25, -17.15], [126.18, -17.18], [126.03, -17.53], [125.5, -17.75], [124.97, -17.53], [124.75, -17.0], [124.97, -16.47], [125.32, -16.32], [125.47, -15.97]]]]}, "2021-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.47, -15.97], [125.82, -15.82], [125.97, -15.47], [126.5, -15.25], [126.75, -15.35], [126.82, -15.32], [126.85, -15.25], [126.75, -15.0], [126.97, -14.47], [127.5, -14.25], [128.03, -14.47], [128.25, -15.0], [128.15, -15.25], [128.25, -15.5], [128.15, -15.75], [128.25, -16.0], [128.15, -16.25], [128.25, -16.5], [128.15, -16.75], [128.25, -17.0], [128.15, -17.25], [128.18, -17.32], [128.53, -17.47], [128.75, -18.0], [128.65, -18.25], [128.75, -18.5], [128.53, -19.03], [128.0, -19.25], [127.47, -19.03], [127.25, -18.5], [127.35, -18.25], [127.32, -18.18], [126.97, -18.03], [126.82, -17.68], [126.47, -17.53], [126.32, -17.18], [126.25, -17.15], [126.18, -17.18], [126.03, -17.53], [125.5, -17.75], [124.97, -17.53], [124.75, -17.0], [124.97, -16.47], [125.32, -16.32], [125.47, -15.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.055801630850397}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.3482214720128702}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.373121698751106, 26.706083440670113, 26.884502190778903, 27.500883807138223, 27.260791266035483]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.513648130282547, 24.86555158783443, 25.549833097099793, 26.606136084748414, 25.573569516183]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.0731183022993234, -3.4861684047605985, -3.52953041365929, -3.076879888615117, -3.4502026828277583]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6969910688330856, -4.692405154994958, -4.567185176357043, -3.9084898657032454, -5.055801630850397]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.608627243673321, -1.9709458234264043, -2.025196348694614, -1.7376825675577265, -1.8407802306308232]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.84102878030841, -2.6516110826924937, -2.540037288761898, -2.1332926816372977, -2.442766665097579]}}