{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:55.262268", "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-Jul-31_to_2024-Aug-02_31.5_7.0"}, "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": 2024070000875}, "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 31 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 02 2024"}, "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": 55223.17146183914}, "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": ["Ethiopia", "South 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": 7.0}, "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": 31.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[30.75, 7.0], [30.97, 7.53], [31.32, 7.68], [31.47, 8.03], [31.82, 8.18], [31.97, 8.53], [32.5, 8.75], [32.75, 8.65], [33.0, 8.75], [33.25, 8.65], [33.5, 8.75], [34.03, 8.53], [34.18, 8.18], [34.53, 8.03], [34.75, 7.5], [34.53, 6.97], [34.0, 6.75], [33.75, 6.85], [33.68, 6.82], [33.53, 6.47], [33.18, 6.32], [33.15, 6.25], [33.25, 6.0], [33.15, 5.75], [33.25, 5.5], [33.03, 4.97], [32.5, 4.75], [31.97, 4.97], [31.82, 5.32], [31.75, 5.35], [31.5, 5.25], [30.97, 5.47], [30.75, 6.0], [30.85, 6.25], [30.75, 6.5], [30.85, 6.75], [30.75, 7.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, 6.5], [30.85, 6.75], [30.75, 7.0], [30.97, 7.53], [31.32, 7.68], [31.47, 8.03], [31.82, 8.18], [31.97, 8.53], [32.5, 8.75], [32.75, 8.65], [33.0, 8.75], [33.25, 8.65], [33.5, 8.75], [34.03, 8.53], [34.18, 8.18], [34.53, 8.03], [34.75, 7.5], [34.53, 6.97], [34.0, 6.75], [33.75, 6.85], [33.68, 6.82], [33.53, 6.47], [33.18, 6.32], [33.15, 6.25], [33.25, 6.0], [33.15, 5.75], [33.25, 5.5], [33.03, 4.97], [32.5, 4.75], [31.97, 4.97], [31.82, 5.32], [31.75, 5.35], [31.5, 5.25], [30.97, 5.47], [30.75, 6.0], [30.85, 6.25], [30.75, 6.5]]]]}, "2024-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, 6.5], [30.85, 6.75], [30.75, 7.0], [30.97, 7.53], [31.32, 7.68], [31.47, 8.03], [31.82, 8.18], [31.97, 8.53], [32.5, 8.75], [32.75, 8.65], [33.0, 8.75], [33.25, 8.65], [33.5, 8.75], [34.03, 8.53], [34.18, 8.18], [34.53, 8.03], [34.75, 7.5], [34.53, 6.97], [34.0, 6.75], [33.75, 6.85], [33.68, 6.82], [33.53, 6.47], [33.18, 6.32], [33.15, 6.25], [33.25, 6.0], [33.15, 5.75], [33.25, 5.5], [33.03, 4.97], [32.5, 4.75], [31.97, 4.97], [31.82, 5.32], [31.75, 5.35], [31.5, 5.25], [30.97, 5.47], [30.75, 6.0], [30.85, 6.25], [30.75, 6.5]]]]}, "2024-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.75, 6.5], [30.85, 6.75], [30.75, 7.0], [30.97, 7.53], [31.32, 7.68], [31.47, 8.03], [31.82, 8.18], [31.97, 8.53], [32.5, 8.75], [32.75, 8.65], [33.0, 8.75], [33.25, 8.65], [33.5, 8.75], [34.03, 8.53], [34.18, 8.18], [34.53, 8.03], [34.75, 7.5], [34.53, 6.97], [34.0, 6.75], [33.75, 6.85], [33.68, 6.82], [33.53, 6.47], [33.18, 6.32], [33.15, 6.25], [33.25, 6.0], [33.15, 5.75], [33.25, 5.5], [33.03, 4.97], [32.5, 4.75], [31.97, 4.97], [31.82, 5.32], [31.75, 5.35], [31.5, 5.25], [30.97, 5.47], [30.75, 6.0], [30.85, 6.25], [30.75, 6.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8145797600506057}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8860557052520104}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.74825593991409, 23.24490396630415, 24.035234705427115]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.511466275821817, 22.718889122204644, 23.55854994558723]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7879071276708172, -2.3154206650008384, -1.5548393230843753]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.074788992725871, -2.8145797600506057, -1.8822118645157957]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6574013366229794, -2.186040342462523, -1.4947193444793736]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9584949356394425, -2.9045715425564733, -1.9917480660510103]}}