{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:35.980910", "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": "2022-Jul-14_to_2022-Jul-16_31.5_21.0"}, "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": 2022070000674}, "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": "July 14 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 16 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 114734.79668854715}, "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": ["Egypt", "Sudan"]}, "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": 21.0}, "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": 31.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "31.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 32.5}, "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": 24.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[28.82, 22.68], [28.97, 23.03], [29.5, 23.25], [29.75, 23.15], [29.82, 23.18], [29.97, 23.53], [30.32, 23.68], [30.35, 23.75], [30.25, 24.0], [30.47, 24.53], [31.0, 24.75], [31.25, 24.65], [31.5, 24.75], [32.03, 24.53], [32.25, 24.0], [32.15, 23.75], [32.25, 23.5], [32.15, 23.25], [32.18, 23.18], [32.53, 23.03], [32.75, 22.5], [32.65, 22.25], [32.68, 22.18], [33.03, 22.03], [33.25, 21.5], [33.15, 21.25], [33.25, 21.0], [33.15, 20.75], [33.25, 20.5], [33.03, 19.97], [32.5, 19.75], [32.25, 19.85], [32.0, 19.75], [31.75, 19.85], [31.5, 19.75], [31.25, 19.85], [31.0, 19.75], [30.47, 19.97], [30.32, 20.32], [30.25, 20.35], [30.18, 20.32], [30.03, 19.97], [29.5, 19.75], [28.97, 19.97], [28.75, 20.5], [28.85, 20.75], [28.82, 20.82], [28.47, 20.97], [28.25, 21.5], [28.35, 21.75], [28.25, 22.0], [28.47, 22.53], [28.82, 22.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.25, 22.0], [28.47, 22.53], [28.82, 22.68], [28.97, 23.03], [29.5, 23.25], [29.75, 23.15], [29.82, 23.18], [29.97, 23.53], [30.32, 23.68], [30.35, 23.75], [30.25, 24.0], [30.47, 24.53], [31.0, 24.75], [31.25, 24.65], [31.5, 24.75], [32.03, 24.53], [32.25, 24.0], [32.15, 23.75], [32.25, 23.5], [32.15, 23.25], [32.18, 23.18], [32.53, 23.03], [32.75, 22.5], [32.65, 22.25], [32.68, 22.18], [33.03, 22.03], [33.25, 21.5], [33.15, 21.25], [33.25, 21.0], [33.15, 20.75], [33.25, 20.5], [33.03, 19.97], [32.5, 19.75], [32.25, 19.85], [32.0, 19.75], [31.75, 19.85], [31.5, 19.75], [31.25, 19.85], [31.0, 19.75], [30.47, 19.97], [30.32, 20.32], [30.25, 20.35], [30.18, 20.32], [30.03, 19.97], [29.5, 19.75], [28.97, 19.97], [28.75, 20.5], [28.85, 20.75], [28.82, 20.82], [28.47, 20.97], [28.25, 21.5], [28.35, 21.75], [28.25, 22.0]]]]}, "2022-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.25, 22.0], [28.47, 22.53], [28.82, 22.68], [28.97, 23.03], [29.5, 23.25], [29.75, 23.15], [29.82, 23.18], [29.97, 23.53], [30.32, 23.68], [30.35, 23.75], [30.25, 24.0], [30.47, 24.53], [31.0, 24.75], [31.25, 24.65], [31.5, 24.75], [32.03, 24.53], [32.25, 24.0], [32.15, 23.75], [32.25, 23.5], [32.15, 23.25], [32.18, 23.18], [32.53, 23.03], [32.75, 22.5], [32.65, 22.25], [32.68, 22.18], [33.03, 22.03], [33.25, 21.5], [33.15, 21.25], [33.25, 21.0], [33.15, 20.75], [33.25, 20.5], [33.03, 19.97], [32.5, 19.75], [32.25, 19.85], [32.0, 19.75], [31.75, 19.85], [31.5, 19.75], [31.25, 19.85], [31.0, 19.75], [30.47, 19.97], [30.32, 20.32], [30.25, 20.35], [30.18, 20.32], [30.03, 19.97], [29.5, 19.75], [28.97, 19.97], [28.75, 20.5], [28.85, 20.75], [28.82, 20.82], [28.47, 20.97], [28.25, 21.5], [28.35, 21.75], [28.25, 22.0]]]]}, "2022-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.25, 22.0], [28.47, 22.53], [28.82, 22.68], [28.97, 23.03], [29.5, 23.25], [29.75, 23.15], [29.82, 23.18], [29.97, 23.53], [30.32, 23.68], 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"Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.9969025898406, 30.36210606554465, 31.135542517876388]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.973834747895296, 28.959440681465765, 29.38576381751784]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.419379187261754, -3.1064455624251464, -2.3505872383264204]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.062904269426383, -3.4398122155519104, -2.70038225025678]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4717675207052205, -1.819131444790818, -1.3471924816709595]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6700721682260482, -2.074373025339745, -1.4827841727701634]}}