{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:04.433161", "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-Nov-14_to_2023-Nov-17_35.0_-19.5"}, "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": 2023110000336}, "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 14 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 17 2023"}, "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": 75824.7175396081}, "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": ["Mozambique", "Zimbabwe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -19.5}, "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": 35.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[34.5, -20.04], [34.18, -20.18], [34.03, -20.53], [33.68, -20.68], [33.53, -21.03], [33.0, -21.25], [32.47, -21.03], [32.25, -20.5], [32.35, -20.25], [32.32, -20.18], [32.25, -20.15], [32.0, -20.25], [31.75, -20.15], [31.5, -20.25], [30.97, -20.03], [30.75, -19.5], [30.97, -18.97], [31.5, -18.75], [31.75, -18.85], [31.82, -18.82], [31.85, -18.75], [31.75, -18.5], [31.97, -17.97], [32.5, -17.75], [32.75, -17.85], [33.0, -17.75], [33.25, -17.85], [33.32, -17.82], [33.47, -17.47], [34.0, -17.25], [34.53, -17.47], [34.68, -17.82], [35.03, -17.97], [35.18, -18.32], [35.53, -18.47], [35.7, -18.87], [36.0, -18.75], [36.53, -18.97], [36.75, -19.5], [36.65, -19.75], [36.75, -20.0], [36.65, -20.25], [36.75, -20.5], [36.53, -21.03], [36.0, -21.25], [35.75, -21.15], [35.5, -21.25], [34.97, -21.03], [34.75, -20.5], [34.85, -20.25], [34.82, -20.18], [34.61, -20.09], [34.5, -20.04]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.5, -20.25], [30.97, -20.03], [30.75, -19.5], [30.97, -18.97], [31.5, -18.75], [31.75, -18.85], [31.82, -18.82], [31.85, -18.75], [31.75, -18.5], [31.97, -17.97], [32.5, -17.75], [32.75, -17.85], [33.0, -17.75], [33.25, -17.85], [33.32, -17.82], [33.47, -17.47], [34.0, -17.25], [34.53, -17.47], [34.68, -17.82], [35.03, -17.97], [35.18, -18.32], [35.53, -18.47], [35.7, -18.87], [36.0, -18.75], [36.53, -18.97], [36.75, -19.5], [36.65, -19.75], [36.75, -20.0], [36.65, -20.25], [36.75, -20.5], [36.53, -21.03], [36.0, -21.25], [35.75, -21.15], [35.5, -21.25], [34.97, -21.03], [34.75, -20.5], [34.85, -20.25], [34.82, -20.18], [34.5, -20.04], [34.18, -20.18], [34.03, -20.53], [33.68, -20.68], [33.53, -21.03], [33.0, -21.25], [32.47, -21.03], [32.25, -20.5], [32.35, -20.25], [32.32, -20.18], [32.25, -20.15], [32.0, -20.25], [31.75, -20.15], [31.5, -20.25]]]]}, "2023-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.5, -20.25], [30.97, -20.03], [30.75, -19.5], [30.97, -18.97], [31.5, -18.75], [31.75, -18.85], [31.82, -18.82], [31.85, -18.75], [31.75, -18.5], [31.97, -17.97], [32.5, -17.75], [32.75, -17.85], [33.0, -17.75], [33.25, -17.85], [33.32, -17.82], [33.47, -17.47], [34.0, -17.25], [34.53, -17.47], [34.68, -17.82], [35.03, -17.97], [35.18, -18.32], [35.53, -18.47], [35.7, -18.87], [36.0, -18.75], [36.53, -18.97], [36.75, -19.5], [36.65, -19.75], [36.75, -20.0], [36.65, -20.25], [36.75, -20.5], [36.53, -21.03], [36.0, -21.25], [35.75, -21.15], [35.5, -21.25], [34.97, -21.03], [34.75, -20.5], [34.85, -20.25], [34.82, -20.18], [34.5, -20.04], [34.18, -20.18], [34.03, -20.53], [33.68, -20.68], [33.53, -21.03], [33.0, -21.25], [32.47, -21.03], [32.25, -20.5], [32.35, -20.25], [32.32, -20.18], [32.25, -20.15], [32.0, -20.25], [31.75, -20.15], [31.5, -20.25]]]]}, "2023-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.5, -20.25], [30.97, -20.03], [30.75, -19.5], [30.97, -18.97], [31.5, -18.75], [31.75, -18.85], [31.82, -18.82], [31.85, -18.75], [31.75, -18.5], [31.97, -17.97], [32.5, -17.75], [32.75, -17.85], [33.0, -17.75], [33.25, -17.85], [33.32, -17.82], [33.47, -17.47], [34.0, -17.25], [34.53, -17.47], [34.68, -17.82], [35.03, -17.97], [35.18, -18.32], [35.53, -18.47], [35.7, -18.87], [36.0, -18.75], [36.53, -18.97], [36.75, -19.5], [36.65, -19.75], [36.75, -20.0], [36.65, -20.25], [36.75, -20.5], [36.53, -21.03], [36.0, -21.25], [35.75, -21.15], [35.5, -21.25], [34.97, -21.03], [34.75, -20.5], [34.85, -20.25], [34.82, -20.18], [34.5, -20.04], [34.18, -20.18], [34.03, -20.53], [33.68, -20.68], [33.53, -21.03], [33.0, -21.25], [32.47, -21.03], [32.25, -20.5], [32.35, -20.25], [32.32, -20.18], [32.25, -20.15], [32.0, -20.25], [31.75, -20.15], [31.5, -20.25]]]]}, "2023-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.47, -18.97], [35.0, -18.75], [35.53, -18.97], [35.75, -19.5], [35.53, -20.03], [35.0, -20.25], [34.47, -20.03], [34.25, -19.5], [34.47, -18.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.766602960849298}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0693452063492326}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.13050649492527, 21.347870403415754, 22.01931790680419, 24.44009985273044]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.614348518150052, 16.347448718539624, 17.510047946972804, 24.44009985273044]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.8270433943732223, -3.563967250137488, -2.847727779156936, -2.271072286230549]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.7301449706874337, -4.766602960849298, -3.9713394801795516, -2.271072286230549]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5501348675529316, -1.8392224807717203, -1.4905765052982598, -1.3896166081591985]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8720483446537137, -2.1407233668938668, -1.7834954110484589, -1.3896166081591985]}}