{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:35:36.220859", "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": "2023-Jun-25_to_2023-Jun-29_37.5_-12.5"}, "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": 2023060000800}, "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": "June 25 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 29 2023"}, "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": 78203.08756293159}, "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": ["Malawi", "Mozambique", "Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": -12.5}, "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": 37.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, -15.0], [34.97, -14.47], [35.32, -14.32], [35.35, -14.25], [35.25, -14.0], [35.35, -13.75], [35.25, -13.5], [35.47, -12.97], [35.82, -12.82], [35.97, -12.47], [36.38, -12.3], [36.25, -12.0], [36.47, -11.47], [36.82, -11.32], [36.97, -10.97], [37.5, -10.75], [37.75, -10.85], [38.0, -10.75], [38.53, -10.97], [38.68, -11.32], [39.03, -11.47], [39.25, -12.0], [39.15, -12.25], [39.25, -12.5], [39.15, -12.75], [39.25, -13.0], [39.03, -13.53], [38.5, -13.75], [38.25, -13.65], [38.18, -13.68], [38.03, -14.03], [37.63, -14.2], [37.68, -14.32], [38.03, -14.47], [38.25, -15.0], [38.03, -15.53], [37.5, -15.75], [37.0, -15.54], [36.68, -15.68], [36.53, -16.03], [36.0, -16.25], [35.47, -16.03], [35.32, -15.68], [34.97, -15.53], [34.75, -15.0]]]]}, "2023-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, -15.0], [34.97, -14.47], [35.32, -14.32], [35.35, -14.25], [35.25, -14.0], [35.35, -13.75], [35.25, -13.5], [35.47, -12.97], [35.82, -12.82], [35.97, -12.47], [36.38, -12.3], [36.25, -12.0], [36.47, -11.47], [36.82, -11.32], [36.97, -10.97], [37.32, -10.82], [37.47, -10.47], [38.0, -10.25], [38.53, -10.47], [38.75, -11.0], [38.65, -11.25], [38.68, -11.32], [39.03, -11.47], [39.25, -12.0], [39.15, -12.25], [39.25, -12.5], [39.15, -12.75], [39.25, -13.0], [39.03, -13.53], [38.5, -13.75], [38.25, -13.65], [38.18, -13.68], [38.03, -14.03], [37.63, -14.2], [37.68, -14.32], [38.03, -14.47], [38.25, -15.0], [38.03, -15.53], [37.5, -15.75], [37.0, -15.54], [36.68, -15.68], [36.53, -16.03], [36.0, -16.25], [35.47, -16.03], [35.32, -15.68], [34.97, -15.53], [34.75, -15.0]]]]}, "2023-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, -15.0], [34.97, -14.47], [35.32, -14.32], [35.35, -14.25], [35.25, -14.0], [35.35, -13.75], [35.25, -13.5], [35.47, -12.97], [35.82, -12.82], [35.97, -12.47], [36.38, -12.3], [36.25, -12.0], [36.47, -11.47], [36.82, -11.32], [36.97, -10.97], [37.32, -10.82], [37.47, -10.47], [38.0, -10.25], [38.53, -10.47], [38.75, -11.0], [38.65, -11.25], [38.68, -11.32], [39.03, -11.47], [39.25, -12.0], [39.15, -12.25], [39.25, -12.5], [39.15, -12.75], [39.25, -13.0], [39.03, -13.53], [38.5, -13.75], [38.25, -13.65], [38.18, -13.68], [38.03, -14.03], [37.63, -14.2], [37.68, -14.32], [38.03, -14.47], [38.25, -15.0], [38.03, -15.53], [37.5, -15.75], [37.0, -15.54], [36.68, -15.68], [36.53, -16.03], [36.0, -16.25], [35.47, -16.03], [35.32, -15.68], [34.97, -15.53], [34.75, -15.0]]]]}, "2023-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.97, -13.03], [36.75, -12.5], [36.97, -11.97], [37.5, -11.75], [38.03, -11.97], [38.25, -12.5], [38.03, -13.03], [37.5, -13.25], [36.97, -13.03]]], [[[37.47, -11.53], [37.25, -11.0], [37.47, -10.47], [38.0, -10.25], [38.53, -10.47], [38.75, -11.0], [38.53, -11.53], [38.0, -11.75], [37.47, -11.53]]]]}, "2023-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.5, -11.75], [38.03, -11.97], [38.25, -12.5], [38.03, -13.03], [37.5, -13.25], [36.97, -13.03], [36.75, -12.5], [36.97, -11.97], [37.5, -11.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9083609046487027}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8020563092793616}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.050263568004482, 19.169432923197746, 19.153441251789673, 21.47088730396615, 21.10847037540367]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.559363246537828, 16.72372559482278, 16.566577155090897, 21.16126306981539, 21.10847037540367]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.864174863450337, -1.7967036248810406, -1.7849989419690009, -1.454816541006096, -1.5262333359772242]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9083609046487027, -2.1485943428212977, -2.2409583459966598, -1.4893965026222986, -1.5262333359772242]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.72125093386378, -1.6935084487976675, -1.6466004418164906, -1.4479822856171993, -1.4514177705144928]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.417840399216851, -2.1722869875685733, -2.175654550868468, -1.4490134802237593, -1.4514177705144928]}}