{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:20.283133", "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-Mar-12_to_2018-Mar-16_132.5_-11.5"}, "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": 2018030000438}, "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": "March 12 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 16 2018"}, "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": 84943.47813121026}, "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": -11.5}, "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": 132.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "132.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 131.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 137.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.25, -10.0], [133.47, -9.47], [134.0, -9.25], [134.25, -9.35], [134.5, -9.25], [134.75, -9.35], [135.0, -9.25], [135.25, -9.35], [135.5, -9.25], [136.03, -9.47], [136.18, -9.82], [136.53, -9.97], [136.75, -10.5], [136.53, -11.03], [136.0, -11.25], [136.25, -11.35], [136.5, -11.25], [136.75, -11.35], [137.0, -11.25], [137.25, -11.35], [137.5, -11.25], [138.03, -11.47], [138.25, -12.0], [138.03, -12.53], [137.5, -12.75], [137.25, -12.65], [137.0, -12.75], [136.75, -12.65], [136.5, -12.75], [136.25, -12.65], [136.0, -12.75], [135.75, -12.65], [135.5, -12.75], [135.25, -12.65], [135.0, -12.75], [134.5, -12.54], [134.0, -12.75], [133.47, -12.53], [133.25, -12.0], [133.38, -11.7], [132.97, -11.53], [132.75, -11.0], [132.97, -10.47], [133.32, -10.32], [133.35, -10.25], [133.25, -10.0]], [[135.75, -11.15], [135.68, -11.18], [135.65, -11.25], [135.68, -11.32], [135.75, -11.35], [136.0, -11.25], [135.75, -11.15]]]]}, "2018-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.47, -9.97], [132.0, -9.75], [132.25, -9.85], [132.5, -9.75], [133.03, -9.97], [133.18, -10.32], [133.25, -10.35], [133.32, -10.32], [133.35, -10.25], [133.25, -10.0], [133.47, -9.47], [134.0, -9.25], [134.25, -9.35], [134.5, -9.25], [134.75, -9.35], [135.0, -9.25], [135.25, -9.35], [135.5, -9.25], [136.03, -9.47], [136.18, -9.82], [136.53, -9.97], [136.75, -10.5], [136.53, -11.03], [136.0, -11.25], [136.25, -11.35], [136.5, -11.25], [136.75, -11.35], [137.0, -11.25], [137.25, -11.35], [137.5, -11.25], [138.03, -11.47], [138.25, -12.0], [138.03, -12.53], [137.5, -12.75], [137.25, -12.65], [137.0, -12.75], [136.75, -12.65], [136.5, -12.75], [136.25, -12.65], [136.0, -12.75], [135.75, -12.65], [135.5, -12.75], [135.25, -12.65], [135.0, -12.75], [134.5, -12.54], [134.0, -12.75], [133.47, -12.53], [133.25, -12.0], [133.38, -11.7], [133.25, -11.65], [133.18, -11.68], [133.03, -12.03], [132.5, -12.25], [131.97, -12.03], [131.82, -11.68], [131.47, -11.53], [131.25, -11.0], [131.35, -10.75], [131.25, -10.5], [131.47, -9.97]], [[135.75, -11.15], [135.68, -11.18], [135.65, -11.25], [135.68, -11.32], [135.75, -11.35], [136.0, -11.25], [135.75, -11.15]]]]}, "2018-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.47, -9.97], [132.0, -9.75], [132.25, -9.85], [132.5, -9.75], [133.03, -9.97], [133.18, -10.32], [133.25, -10.35], [133.32, -10.32], [133.35, -10.25], [133.25, -10.0], [133.47, -9.47], [134.0, -9.25], [134.25, -9.35], [134.5, -9.25], [134.75, -9.35], [135.0, -9.25], [135.25, -9.35], [135.5, -9.25], [136.03, -9.47], [136.18, -9.82], [136.53, -9.97], [136.75, -10.5], [136.53, -11.03], [136.0, -11.25], [136.25, -11.35], [136.5, -11.25], [136.75, -11.35], [137.0, -11.25], [137.25, -11.35], [137.5, -11.25], [138.03, -11.47], [138.25, -12.0], [138.03, -12.53], [137.5, -12.75], [137.25, -12.65], [137.0, -12.75], [136.75, -12.65], [136.5, -12.75], [136.25, -12.65], [136.0, -12.75], [135.75, -12.65], [135.5, -12.75], [135.25, -12.65], [135.0, -12.75], [134.5, -12.54], [134.0, -12.75], [133.47, -12.53], [133.25, -12.0], [133.38, -11.7], [133.25, -11.65], [133.18, -11.68], [133.03, -12.03], [132.5, -12.25], [131.97, -12.03], [131.82, -11.68], [131.47, -11.53], [131.25, -11.0], [131.35, -10.75], [131.25, -10.5], [131.47, -9.97]], [[135.75, -11.15], [135.68, -11.18], [135.65, -11.25], [135.68, -11.32], [135.75, -11.35], [136.0, -11.25], [135.75, -11.15]]]]}, "2018-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.47, -9.97], [132.0, -9.75], [132.25, -9.85], [132.5, -9.75], [133.03, -9.97], [133.18, -10.32], [133.25, -10.35], [133.5, -10.25], [133.75, -10.35], [133.82, -10.32], [133.97, -9.97], [134.32, -9.82], [134.47, -9.47], [135.0, -9.25], [135.25, -9.35], [135.5, -9.25], [136.03, -9.47], [136.25, -10.0], [136.03, -10.53], [135.68, -10.68], [135.53, -11.03], [135.18, -11.18], [135.03, -11.53], [134.63, -11.7], [134.75, -12.0], [134.53, -12.53], [134.0, -12.75], [133.47, -12.53], [133.25, -12.0], [133.38, -11.7], [133.25, -11.65], [133.18, -11.68], [133.03, -12.03], [132.5, -12.25], [131.97, -12.03], [131.82, -11.68], [131.47, -11.53], [131.25, -11.0], [131.35, -10.75], [131.25, -10.5], [131.47, -9.97]]]]}, "2018-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.5, -10.75], [133.03, -10.97], [133.25, -11.5], [133.03, -12.03], [132.5, -12.25], [131.97, -12.03], [131.75, -11.5], [131.97, -10.97], [132.5, -10.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.561303452678203}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0913354577863832}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.43998817060276, 26.399093395955163, 26.45018893017499, 26.44996270877681, 26.14675486448232]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.04519416578148, 26.10006683480617, 26.18924381831863, 26.093234440219476, 26.14675486448232]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0790276566066241, -1.1211698969988646, -1.072800634520947, -1.059753988484646, -1.4878584074481296]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.459485141171001, -1.561303452678203, -1.3764259895734199, -1.5213826555992682, -1.4878584074481296]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4849151721341252, -1.571762746472207, -1.519015609152655, -1.505712194565072, -1.7748806128101648]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7477073592057553, -1.8365936785751733, -1.8425506608457813, -1.8300798989354223, -1.7748806128101648]}}