{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:32.350047", "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": "2025-Feb-01_to_2025-Feb-04_36.0_-22.5"}, "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": 2025020000698}, "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 01 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 04 2025"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 72082.63059603676}, "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"]}, "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": -22.5}, "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": 36.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.0}, "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": -23.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[34.97, -18.97], [35.5, -18.75], [35.75, -18.85], [36.0, -18.75], [36.25, -18.85], [36.5, -18.75], [37.03, -18.97], [37.25, -19.5], [37.15, -19.75], [37.25, -20.0], [37.15, -20.25], [37.25, -20.5], [37.15, -20.75], [37.25, -21.0], [37.15, -21.25], [37.25, -21.5], [37.15, -21.75], [37.25, -22.0], [37.15, -22.25], [37.25, -22.5], [37.15, -22.75], [37.25, -23.0], [37.03, -23.53], [36.5, -23.75], [36.25, -23.65], [36.0, -23.75], [35.47, -23.53], [35.32, -23.18], [34.97, -23.03], [34.75, -22.5], [34.85, -22.25], [34.75, -22.0], [34.85, -21.75], [34.75, -21.5], [34.85, -21.25], [34.82, -21.18], [34.47, -21.03], [34.25, -20.5], [34.35, -20.25], [34.25, -20.0], [34.47, -19.47], [34.82, -19.32], [34.97, -18.97]]]]}}, "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": {"2025-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, -22.0], [34.85, -21.75], [34.75, -21.5], [34.85, -21.25], [34.75, -21.0], [34.85, -20.75], [34.75, -20.5], [34.85, -20.25], [34.75, -20.0], [34.97, -19.47], [35.32, -19.32], [35.47, -18.97], [36.0, -18.75], [36.53, -18.97], [36.75, -19.5], [36.65, -19.75], [36.68, -19.82], [37.03, -19.97], [37.25, -20.5], [37.15, -20.75], [37.25, -21.0], [37.15, -21.25], [37.25, -21.5], [37.15, -21.75], [37.25, -22.0], [37.15, -22.25], [37.25, -22.5], [37.15, -22.75], [37.25, -23.0], [37.03, -23.53], [36.5, -23.75], [36.25, -23.65], [36.0, -23.75], [35.47, -23.53], [35.32, -23.18], [34.97, -23.03], [34.75, -22.5], [34.85, -22.25], [34.75, -22.0]]]]}, "2025-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.25, -20.0], [34.47, -19.47], [34.82, -19.32], [34.97, -18.97], [35.5, -18.75], [35.75, -18.85], [36.0, -18.75], [36.25, -18.85], [36.5, -18.75], [37.03, -18.97], [37.25, -19.5], [37.15, -19.75], [37.25, -20.0], [37.15, -20.25], [37.25, -20.5], [37.15, -20.75], [37.25, -21.0], [37.15, -21.25], [37.25, -21.5], [37.15, -21.75], [37.25, -22.0], [37.15, -22.25], [37.25, -22.5], [37.15, -22.75], [37.25, -23.0], [37.03, -23.53], [36.5, -23.75], [36.25, -23.65], [36.0, -23.75], [35.47, -23.53], [35.32, -23.18], [34.97, -23.03], [34.75, -22.5], [34.85, -22.25], [34.75, -22.0], [34.85, -21.75], [34.75, -21.5], [34.85, -21.25], [34.82, -21.18], [34.47, -21.03], [34.25, -20.5], [34.35, -20.25], [34.25, -20.0]]]]}, "2025-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.25, -20.0], [34.47, -19.47], [34.82, -19.32], [34.97, -18.97], [35.5, -18.75], [35.75, -18.85], [36.0, -18.75], [36.25, -18.85], [36.5, -18.75], [37.03, -18.97], [37.25, -19.5], [37.15, -19.75], [37.25, -20.0], [37.15, -20.25], [37.25, -20.5], [37.15, -20.75], [37.25, -21.0], [37.15, -21.25], [37.25, -21.5], [37.15, -21.75], [37.25, -22.0], [37.15, -22.25], [37.25, -22.5], [37.15, -22.75], [37.25, -23.0], [37.03, -23.53], [36.5, -23.75], [36.25, -23.65], [36.0, -23.75], [35.47, -23.53], [35.32, -23.18], [34.97, -23.03], [34.75, -22.5], 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"Maximum t2m anomaly recorded over entire duration", "value": 1.6979820005668103}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.1446556563901447}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.23711751302085, 28.26887837727861, 28.585529429117855, 28.203730216858844]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.50708414713546, 28.797097778320335, 28.992436981201195, 28.906711832682333]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.0999827191366223, 1.0798047780789262, 1.377384108993599, 0.9873470558075041]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.305988290425148, 1.4020646255050906, 1.6979820005668103, 1.2479547629645822]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6141878337110274, 1.5965833024387153, 2.10115274033234, 1.459139206273021]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9067334824117763, 1.9188863723541136, 2.798027715217639, 1.7076383210846446]}}