{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:33.547729", "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": "2024-Feb-27_to_2024-Mar-01_34.0_-14.5"}, "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": 2024020000623}, "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": "February 27 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 01 2024"}, "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": 77821.42183362217}, "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", "Zambia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -14.5}, "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": 34.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[32.75, -13.35], [33.0, -13.25], [33.25, -13.35], [33.5, -13.25], [33.75, -13.35], [34.0, -13.25], [34.3, -13.37], [34.47, -12.97], [35.0, -12.75], [35.25, -12.85], [35.32, -12.82], [35.47, -12.47], [36.0, -12.25], [36.25, -12.35], [36.5, -12.25], [37.03, -12.47], [37.25, -13.0], [37.03, -13.53], [36.68, -13.68], [36.53, -14.03], [36.18, -14.18], [36.15, -14.25], [36.25, -14.5], [36.15, -14.75], [36.18, -14.82], [36.53, -14.97], [36.75, -15.5], [36.65, -15.75], [36.75, -16.0], [36.53, -16.53], [36.0, -16.75], [35.47, -16.53], [35.25, -16.0], [35.35, -15.75], [35.32, -15.68], [35.25, -15.65], [35.18, -15.68], [35.03, -16.03], [34.5, -16.25], [34.25, -16.15], [34.0, -16.25], [33.47, -16.03], [33.32, -15.68], [32.97, -15.53], [32.82, -15.18], [32.75, -15.15], [32.5, -15.25], [31.97, -15.03], [31.75, -14.5], [31.85, -14.25], [31.75, -14.0], [31.97, -13.47], [32.5, -13.25], [32.75, -13.35]]]]}}, "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": {"2024-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.75, -14.0], [31.97, -13.47], [32.5, -13.25], [32.75, -13.35], [33.0, -13.25], [33.25, -13.35], [33.5, -13.25], [33.75, -13.35], [34.0, -13.25], [34.3, -13.37], [34.47, -12.97], [35.0, -12.75], [35.25, -12.85], [35.5, -12.75], [35.75, -12.85], [35.82, -12.82], [35.97, -12.47], [36.5, -12.25], [37.03, -12.47], [37.25, -13.0], [37.03, -13.53], [36.68, -13.68], [36.53, -14.03], [36.18, -14.18], [36.15, -14.25], [36.25, -14.5], [36.15, -14.75], [36.18, -14.82], [36.53, -14.97], [36.75, -15.5], [36.65, -15.75], [36.75, -16.0], [36.53, -16.53], [36.0, -16.75], [35.47, -16.53], [35.25, -16.0], [35.35, -15.75], [35.32, -15.68], [35.25, -15.65], [35.18, -15.68], [35.03, -16.03], [34.5, -16.25], [34.25, -16.15], [34.0, -16.25], [33.47, -16.03], [33.32, -15.68], [32.97, -15.53], [32.82, -15.18], [32.75, -15.15], [32.5, -15.25], [31.97, -15.03], [31.75, -14.5], [31.85, -14.25], [31.75, -14.0]]]]}, "2024-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.75, -14.0], [31.97, -13.47], [32.5, -13.25], [32.75, -13.35], [33.0, -13.25], [33.25, -13.35], [33.5, -13.25], [33.75, -13.35], [34.0, -13.25], [34.3, -13.37], [34.47, -12.97], [35.0, -12.75], [35.25, -12.85], [35.32, -12.82], [35.47, -12.47], [36.0, -12.25], [36.25, -12.35], [36.5, -12.25], [37.03, -12.47], [37.25, -13.0], [37.03, -13.53], [36.68, -13.68], [36.53, -14.03], [36.18, -14.18], [36.15, -14.25], [36.25, -14.5], [36.15, -14.75], [36.18, -14.82], [36.53, -14.97], [36.75, -15.5], [36.65, -15.75], [36.75, -16.0], [36.53, -16.53], [36.0, -16.75], [35.47, -16.53], [35.25, -16.0], [35.35, -15.75], [35.32, -15.68], [35.25, -15.65], [35.18, -15.68], [35.03, -16.03], [34.5, -16.25], [34.25, -16.15], [34.0, -16.25], [33.47, -16.03], [33.32, -15.68], [32.97, -15.53], [32.82, -15.18], [32.75, -15.15], [32.5, -15.25], [31.97, -15.03], [31.75, -14.5], [31.85, -14.25], [31.75, -14.0]]]]}, "2024-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.75, -14.0], [31.97, -13.47], [32.5, -13.25], [32.75, -13.35], [33.0, -13.25], [33.25, -13.35], [33.5, -13.25], [33.75, -13.35], [34.0, -13.25], [34.3, -13.37], [34.47, -12.97], [35.0, -12.75], [35.25, -12.85], [35.32, -12.82], [35.47, -12.47], [36.0, -12.25], [36.25, -12.35], [36.5, -12.25], [37.03, -12.47], [37.25, -13.0], [37.03, -13.53], [36.68, -13.68], [36.53, -14.03], [36.18, -14.18], [36.15, -14.25], [36.25, -14.5], [36.15, -14.75], [36.18, -14.82], [36.53, -14.97], [36.75, -15.5], [36.65, -15.75], [36.75, -16.0], [36.53, -16.53], [36.0, -16.75], [35.47, -16.53], [35.25, -16.0], [35.35, -15.75], [35.32, -15.68], [35.25, -15.65], [35.18, -15.68], [35.03, -16.03], [34.5, -16.25], [34.25, -16.15], [34.0, -16.25], [33.47, -16.03], [33.32, -15.68], [32.97, -15.53], [32.82, -15.18], [32.75, -15.15], [32.5, -15.25], [31.97, -15.03], [31.75, -14.5], [31.85, -14.25], [31.75, -14.0]]]]}, "2024-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, -12.47], [36.0, -12.25], [36.53, -12.47], [36.75, -13.0], [36.53, -13.53], [36.0, -13.75], [35.47, -13.53], [35.25, -13.0], [35.47, -12.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.0947237133874523}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7926582954431438}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.221920364486436, 20.73857808020165, 20.78482176770018, 21.028022968949074]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.908785435340917, 18.423413801784818, 18.097896358717833, 21.028022968949074]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5193410674568781, -1.9495719411206052, -1.9245561346033508, -1.1164903893204041]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.973438525686504, -3.0947237133874523, -2.649603770562294, -1.1164903893204041]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4932984490546333, -1.9436754342868374, -2.0152855768502573, -1.4347809628278023]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9227158334941628, -2.6179998838846426, -3.4908462122345143, -1.4347809628278023]}}