{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:26.149622", "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-Apr-19_to_2022-Apr-23_305.5_5.5"}, "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": 2022040000632}, "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": "April 19 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 23 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 92359.04265387813}, "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": ["French Guiana", "Suriname"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America"]}, "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": ["Atlantic Ocean"]}, "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": 5.5}, "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": 305.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 304.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 7.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-56.15, 5.25], [-56.25, 5.5], [-56.03, 6.03], [-55.5, 6.25], [-55.25, 6.15], [-55.0, 6.25], [-54.75, 6.15], [-54.5, 6.25], [-54.25, 6.15], [-54.0, 6.25], [-53.47, 6.03], [-53.32, 5.68], [-53.25, 5.65], [-53.0, 5.75], [-52.75, 5.65], [-52.68, 5.68], [-52.65, 5.75], [-52.75, 6.0], [-52.65, 6.25], [-52.68, 6.32], [-53.03, 6.47], [-53.25, 7.0], [-53.03, 7.53], [-52.5, 7.75], [-52.25, 7.65], [-52.0, 7.75], [-51.75, 7.65], [-51.5, 7.75], [-50.97, 7.53], [-50.75, 7.0], [-50.97, 6.47], [-51.32, 6.32], [-51.35, 6.25], [-51.25, 6.0], [-51.35, 5.75], [-51.25, 5.5], [-51.47, 4.97], [-51.82, 4.82], [-51.85, 4.75], [-51.75, 4.5], [-51.97, 3.97], [-52.5, 3.75], [-52.75, 3.85], [-53.0, 3.75], [-53.25, 3.85], [-53.32, 3.82], [-53.47, 3.47], [-54.0, 3.25], [-54.25, 3.35], [-54.5, 3.25], [-54.75, 3.35], [-55.0, 3.25], [-55.25, 3.35], [-55.5, 3.25], [-55.75, 3.35], [-56.0, 3.25], [-56.53, 3.47], [-56.75, 4.0], [-56.65, 4.25], [-56.75, 4.5], [-56.53, 5.03], [-56.18, 5.18], [-56.15, 5.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.64999999999998, 4.75], [-55.75, 5.0], [-55.52999999999997, 5.53], [-55.18000000000001, 5.68], [-55.02999999999997, 6.03], [-54.5, 6.25], [-54.25, 6.15], [-54.0, 6.25], [-53.47000000000003, 6.03], [-53.31999999999999, 5.68], [-53.25, 5.65], [-53.0, 5.75], [-52.75, 5.65], [-52.5, 5.75], [-51.97000000000003, 5.53], [-51.75, 5.0], [-51.97000000000003, 4.47], [-52.31999999999999, 4.32], [-52.47000000000003, 3.97], [-53.0, 3.75], [-53.25, 3.85], [-53.5, 3.75], [-53.75, 3.85], [-54.0, 3.75], [-54.25, 3.85], [-54.31999999999999, 3.82], [-54.47000000000003, 3.47], [-55.0, 3.25], [-55.25, 3.35], [-55.5, 3.25], [-56.02999999999997, 3.47], [-56.25, 4.0], [-56.02999999999997, 4.53], [-55.68000000000001, 4.68], [-55.64999999999998, 4.75]]]]}, "2022-04-20T11:30:00.000000000": {"type": "MultiPolygon", 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duration", "value": -1.514770674729421}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.595575429751307, 24.679848881415978, 24.142142301099284, 24.38690648400643, 25.425900860099034]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.10904923680988, 24.363337377688083, 23.08859223387168, 23.71997070635763, 24.559298320341384]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2766718588441563, -1.213468485245133, -1.9266276066146115, -1.6728499218710227, -0.9378045714341108]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6581158939972624, -1.3860098325894228, -2.750080575762013, -2.191685379524017, -1.369095009909472]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7008195369484953, -1.5378289299451164, -2.497167045054387, -2.313119571606358, -1.5080071932805874]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0675720493988603, -1.7296044626640297, -3.169828364841931, -2.9769619727954377, -1.8263072765382657]}}