{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:57.094235", "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-May-02_to_2022-May-06_247.5_20.0"}, "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": 2022050000168}, "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": "May 02 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 06 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": 169593.165777679}, "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": ["Mexico"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["Pacific 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": 20.0}, "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": 247.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "247.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 247.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 252.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-113.53, 21.03], [-113.18, 21.18], [-113.03, 21.53], [-112.5, 21.75], [-112.25, 21.65], [-112.0, 21.75], [-111.75, 21.65], [-111.5, 21.75], [-111.25, 21.65], [-111.0, 21.75], [-110.47, 21.53], [-110.32, 21.18], [-109.97, 21.03], [-109.75, 20.5], [-109.85, 20.25], [-109.75, 20.0], [-109.85, 19.75], [-109.82, 19.68], [-109.75, 19.65], [-109.5, 19.75], [-109.25, 19.65], [-109.0, 19.75], [-108.75, 19.65], [-108.5, 19.75], [-107.97, 19.53], [-107.75, 19.0], [-107.85, 18.75], [-107.82, 18.68], [-107.47, 18.53], [-107.25, 18.0], [-107.47, 17.47], [-107.82, 17.32], [-107.97, 16.97], [-108.5, 16.75], [-108.75, 16.85], [-109.0, 16.75], [-109.25, 16.85], [-109.5, 16.75], [-109.75, 16.85], [-109.82, 16.82], [-109.97, 16.47], [-110.5, 16.25], [-110.75, 16.35], [-111.0, 16.25], [-111.25, 16.35], [-111.5, 16.25], [-111.75, 16.35], [-112.0, 16.25], [-112.53, 16.47], [-112.68, 16.82], [-113.03, 16.97], [-113.25, 17.5], [-113.15, 17.75], [-113.25, 18.0], [-113.15, 18.25], [-113.25, 18.5], [-113.15, 18.75], [-113.25, 19.0], [-113.15, 19.25], [-113.18, 19.32], [-113.53, 19.47], [-113.75, 20.0], [-113.65, 20.25], [-113.75, 20.5], [-113.53, 21.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America", "N.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.75, 20.5], [-113.53, 21.03], [-113.18, 21.18], [-113.03, 21.53], [-112.5, 21.75], [-112.25, 21.65], [-112.0, 21.75], [-111.75, 21.65], [-111.5, 21.75], [-111.25, 21.65], [-111.0, 21.75], [-110.47, 21.53], [-110.25, 21.0], [-110.35, 20.75], [-110.25, 20.5], [-110.35, 20.25], [-110.32, 20.18], [-109.97, 20.03], [-109.75, 19.5], [-109.97, 18.97], [-110.5, 18.75], [-111.0, 18.96], [-111.5, 18.75], [-111.75, 18.85], [-111.82, 18.82], [-111.97, 18.47], [-112.5, 18.25], [-113.03, 18.47], [-113.25, 19.0], [-113.15, 19.25], [-113.18, 19.32], [-113.53, 19.47], [-113.75, 20.0], [-113.65, 20.25], [-113.75, 20.5]]]]}, "2022-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.5, 17.25], [-109.03, 17.47], [-109.25, 18.0], [-109.03, 18.53], [-108.5, 18.75], [-107.97, 18.53], [-107.75, 18.0], [-107.97, 17.47], [-108.5, 17.25]]], [[[-113.53, 21.03], [-113.18, 21.18], [-113.03, 21.53], [-112.5, 21.75], [-112.25, 21.65], [-112.0, 21.75], [-111.75, 21.65], [-111.5, 21.75], [-111.25, 21.65], [-111.0, 21.75], [-110.47, 21.53], [-110.32, 21.18], [-109.97, 21.03], [-109.75, 20.5], [-109.85, 20.25], [-109.75, 20.0], [-109.85, 19.75], [-109.75, 19.5], [-109.97, 18.97], [-110.32, 18.82], [-110.47, 18.47], [-110.82, 18.32], [-110.97, 17.97], [-111.5, 17.75], [-111.75, 17.85], [-112.0, 17.75], [-112.25, 17.85], [-112.5, 17.75], [-113.03, 17.97], [-113.25, 18.5], [-113.15, 18.75], [-113.25, 19.0], [-113.15, 19.25], [-113.18, 19.32], [-113.53, 19.47], [-113.75, 20.0], [-113.65, 20.25], [-113.75, 20.5], [-113.53, 21.03]]]]}, "2022-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-113.75, 20.5], [-113.53, 21.03], [-113.18, 21.18], [-113.03, 21.53], [-112.5, 21.75], [-112.25, 21.65], [-112.0, 21.75], [-111.75, 21.65], [-111.5, 21.75], [-111.25, 21.65], [-111.0, 21.75], [-110.47, 21.53], [-110.32, 21.18], [-109.97, 21.03], [-109.75, 20.5], [-109.85, 20.25], [-109.75, 20.0], [-109.85, 19.75], [-109.82, 19.68], [-109.75, 19.65], [-109.5, 19.75], [-109.25, 19.65], [-109.0, 19.75], [-108.75, 19.65], [-108.5, 19.75], [-107.97, 19.53], [-107.75, 19.0], [-107.85, 18.75], [-107.82, 18.68], [-107.47, 18.53], [-107.25, 18.0], [-107.47, 17.47], [-107.82, 17.32], [-107.97, 16.97], [-108.5, 16.75], [-108.75, 16.85], [-109.0, 16.75], [-109.25, 16.85], [-109.5, 16.75], [-109.75, 16.85], [-109.82, 16.82], [-109.97, 16.47], [-110.5, 16.25], [-110.75, 16.35], [-111.0, 16.25], [-111.25, 16.35], [-111.5, 16.25], [-111.75, 16.35], [-112.0, 16.25], [-112.53, 16.47], [-112.68, 16.82], [-113.03, 16.97], [-113.25, 17.5], [-113.15, 17.75], [-113.25, 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21.05434543106651, 21.732848104549817]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.935572525022963, 18.8428714061493, 19.139932703891702, 18.97220312312203, 19.69790668283133]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6558992849867817, -1.8287705805049244, -1.7380651495463508, -1.7944395225985472, -1.6545878713274322]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8786375594929723, -2.161716567952965, -2.1273215326660875, -2.1012309552344846, -1.9737808834553903]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5144999132351895, -1.6355623813457332, -1.6086593846246262, -1.6281142644370439, -1.5429235713901495]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6665897036446837, -1.8461024868234632, -1.9338004311379264, -1.9066769169551878, -1.7237724732886943]}}