{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:23.465526", "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": "2012-Jan-24_to_2012-Jan-27_142.5_-18.5"}, "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": 2012010001229}, "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": "January 24 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 27 2012"}, "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": 147051.1239537592}, "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": ["Arafura Sea"]}, "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": -18.5}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 139.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.5, -16.25], [140.75, -16.35], [140.82, -16.32], 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"coordinates": [[[[138.75, -17.5], [138.97, -16.97], [139.5, -16.75], [139.75, -16.85], [139.82, -16.82], [139.97, -16.47], [140.5, -16.25], [140.75, -16.35], [140.82, -16.32], [140.85, -16.25], [140.75, -16.0], [140.97, -15.47], [141.5, -15.25], [141.75, -15.35], [142.0, -15.25], [142.53, -15.47], [142.68, -15.82], [143.03, -15.97], [143.18, -16.32], [143.25, -16.35], [143.5, -16.25], [143.75, -16.35], [144.0, -16.25], [144.25, -16.35], [144.5, -16.25], [145.03, -16.47], [145.25, -17.0], [145.15, -17.25], [145.25, -17.5], [145.03, -18.03], [144.68, -18.18], [144.65, -18.25], [144.75, -18.5], [144.53, -19.03], [144.18, -19.18], [144.15, -19.25], [144.25, -19.5], [144.03, -20.03], [143.5, -20.25], [143.25, -20.15], [143.0, -20.25], [142.75, -20.15], [142.68, -20.18], [142.53, -20.53], [142.0, -20.75], [141.47, -20.53], [141.32, -20.18], [140.97, -20.03], [140.75, -19.5], [140.85, -19.25], [140.82, -19.18], [140.47, -19.03], [140.3, -18.62], [140.0, -18.75], [139.47, -18.53], [139.32, -18.18], [138.97, -18.03], [138.75, -17.5]]]]}, "2012-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.75, -17.5], [138.97, -16.97], [139.5, -16.75], [139.75, -16.85], [139.82, -16.82], [139.97, -16.47], [140.5, -16.25], [140.75, -16.35], [140.82, -16.32], [140.85, -16.25], [140.75, -16.0], [140.97, -15.47], [141.5, -15.25], [141.75, -15.35], [142.0, -15.25], [142.53, -15.47], [142.68, -15.82], [143.03, -15.97], [143.18, -16.32], [143.25, -16.35], [143.5, -16.25], [143.75, -16.35], [144.0, -16.25], [144.25, -16.35], [144.5, -16.25], [145.03, -16.47], [145.25, -17.0], [145.15, -17.25], [145.25, -17.5], [145.03, -18.03], [144.68, -18.18], [144.65, -18.25], [144.75, -18.5], [144.53, -19.03], [144.18, -19.18], [144.15, -19.25], [144.25, -19.5], [144.03, -20.03], [143.5, -20.25], [143.25, -20.15], [143.0, -20.25], [142.75, -20.15], [142.68, -20.18], [142.53, -20.53], [142.0, -20.75], [141.47, -20.53], [141.32, -20.18], [140.97, -20.03], [140.75, -19.5], [140.85, -19.25], [140.82, -19.18], [140.47, -19.03], [140.3, -18.62], [140.0, -18.75], [139.47, -18.53], [139.32, -18.18], [138.97, -18.03], [138.75, -17.5]]]]}, "2012-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.75, -17.5], [138.97, -16.97], [139.5, -16.75], [140.03, -16.97], [140.18, -17.32], [140.53, -17.47], [140.7, -17.87], [141.0, -17.75], [141.25, -17.85], [141.5, -17.75], [141.75, -17.85], [142.0, -17.75], [142.25, -17.85], [142.5, -17.75], [142.75, -17.85], [143.0, -17.75], [143.25, -17.85], [143.5, -17.75], [144.03, -17.97], [144.25, -18.5], [144.15, -18.75], [144.25, -19.0], [144.15, -19.25], [144.25, -19.5], [144.03, -20.03], [143.5, -20.25], [143.25, -20.15], [143.0, -20.25], [142.75, -20.15], [142.68, -20.18], [142.53, -20.53], [142.0, -20.75], [141.47, -20.53], [141.32, -20.18], [140.97, -20.03], [140.75, -19.5], [140.85, -19.25], [140.82, -19.18], [140.47, -19.03], [140.3, -18.62], [140.0, -18.75], [139.47, -18.53], [139.32, -18.18], [138.97, -18.03], [138.75, -17.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.117647463525657}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9291820179459305}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.10093042993128, 25.542363650894345, 25.263198944615, 25.662907918133328]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.07190374748359, 22.962866383088738, 22.420765287562233, 23.84678491815913]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4162204856294496, -3.019623916610009, -3.2066177973605297, -3.1489937820507343]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2757346161209284, -3.825102821340238, -5.117647463525657, -4.69463338475083]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5394804872161851, -1.9206708271481647, -1.9837465813288608, -1.6144728597078213]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9220354699591742, -2.864875582105111, -2.4196231957504195, -1.9643753882805854]}}