{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:36.131933", "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-Feb-26_to_2022-Mar-03_291.0_8.0"}, "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": 2022020001032}, "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 26 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 104174.01551939038}, "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": ["Colombia", "Venezuela, Bolivarian Republic of"]}, "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": []}, "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": 8.0}, "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": 291.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 293.5}, "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": 9.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-70.53, 8.53], [-70.0, 8.75], [-69.75, 8.65], [-69.68, 8.68], [-69.53, 9.03], [-69.0, 9.25], [-68.75, 9.15], [-68.5, 9.25], [-68.2, 9.12], [-68.03, 9.53], [-67.5, 9.75], [-67.25, 9.65], [-67.0, 9.75], [-66.75, 9.65], [-66.5, 9.75], [-65.97, 9.53], [-65.75, 9.0], [-65.85, 8.75], [-65.75, 8.5], [-65.85, 8.25], [-65.75, 8.0], [-65.85, 7.75], [-65.75, 7.5], [-65.85, 7.25], [-65.75, 7.0], [-65.97, 6.47], [-66.5, 6.25], [-66.8, 6.38], [-66.85, 6.25], [-66.75, 6.0], [-66.97, 5.47], [-67.5, 5.25], [-67.75, 5.35], [-67.82, 5.32], [-67.97, 4.97], [-68.5, 4.75], [-69.03, 4.97], [-69.25, 5.5], [-69.15, 5.75], [-69.25, 6.0], [-69.12, 6.3], [-69.25, 6.35], [-69.5, 6.25], [-69.75, 6.35], [-70.0, 6.25], [-70.53, 6.47], [-70.75, 7.0], [-70.65, 7.25], [-70.75, 7.5], [-70.65, 7.75], [-70.75, 8.0], [-70.53, 8.53]]]]}}, "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": {"2022-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.25, 6.0], [-69.02999999999997, 6.53], [-68.68, 6.68], [-68.64999999999998, 6.75], [-68.75, 7.0], [-68.64999999999998, 7.25], [-68.75, 7.5], [-68.52999999999997, 8.03], [-68.18, 8.18], [-68.14999999999998, 8.25], [-68.25, 8.5], [-68.14999999999998, 8.75], [-68.25, 9.0], [-68.02999999999997, 9.53], [-67.5, 9.75], [-67.25, 9.65], [-67.0, 9.75], [-66.75, 9.65], [-66.5, 9.75], [-65.97000000000003, 9.53], [-65.75, 9.0], [-65.85000000000002, 8.75], [-65.75, 8.5], [-65.85000000000002, 8.25], [-65.75, 8.0], [-65.85000000000002, 7.75], [-65.75, 7.5], [-65.85000000000002, 7.25], [-65.75, 7.0], [-65.97000000000003, 6.47], [-66.5, 6.25], [-66.80000000000001, 6.38], [-66.85000000000002, 6.25], [-66.75, 6.0], [-66.97000000000003, 5.47], [-67.5, 5.25], [-67.75, 5.35], [-67.82, 5.32], [-67.97000000000003, 4.97], [-68.5, 4.75], [-69.02999999999997, 4.97], [-69.25, 5.5], [-69.14999999999998, 5.75], [-69.25, 6.0]]]]}, "2022-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.75, 7.5], [-70.64999999999998, 7.75], [-70.75, 8.0], [-70.52999999999997, 8.53], [-70.0, 8.75], [-69.75, 8.65], [-69.68, 8.68], [-69.52999999999997, 9.03], [-69.0, 9.25], [-68.75, 9.15], [-68.5, 9.25], [-68.19999999999999, 9.12], [-68.02999999999997, 9.53], [-67.5, 9.75], [-67.25, 9.65], [-67.0, 9.75], [-66.75, 9.65], [-66.5, 9.75], [-65.97000000000003, 9.53], [-65.75, 9.0], [-65.85000000000002, 8.75], [-65.75, 8.5], [-65.85000000000002, 8.25], [-65.75, 8.0], [-65.85000000000002, 7.75], [-65.75, 7.5], [-65.85000000000002, 7.25], [-65.75, 7.0], [-65.97000000000003, 6.47], [-66.5, 6.25], [-66.80000000000001, 6.38], [-66.85000000000002, 6.25], [-66.75, 6.0], [-66.97000000000003, 5.47], [-67.5, 5.25], [-67.75, 5.35], [-67.82, 5.32], [-67.97000000000003, 4.97], [-68.5, 4.75], [-69.02999999999997, 4.97], [-69.25, 5.5], [-69.14999999999998, 5.75], [-69.25, 6.0], [-69.12, 6.3], [-69.25, 6.35], [-69.5, 6.25], [-69.75, 6.35], [-70.0, 6.25], [-70.52999999999997, 6.47], [-70.75, 7.0], [-70.64999999999998, 7.25], [-70.75, 7.5]]]]}, "2022-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.75, 7.5], [-70.64999999999998, 7.75], [-70.75, 8.0], [-70.52999999999997, 8.53], [-70.0, 8.75], [-69.75, 8.65], [-69.68, 8.68], [-69.52999999999997, 9.03], [-69.0, 9.25], [-68.75, 9.15], [-68.5, 9.25], [-68.19999999999999, 9.12], [-68.02999999999997, 9.53], [-67.5, 9.75], [-67.25, 9.65], [-67.0, 9.75], [-66.75, 9.65], [-66.5, 9.75], [-65.97000000000003, 9.53], [-65.75, 9.0], [-65.85000000000002, 8.75], [-65.75, 8.5], [-65.85000000000002, 8.25], [-65.75, 8.0], [-65.85000000000002, 7.75], [-65.75, 7.5], [-65.85000000000002, 7.25], [-65.75, 7.0], [-65.97000000000003, 6.47], [-66.5, 6.25], [-66.80000000000001, 6.38], [-66.85000000000002, 6.25], [-66.75, 6.0], [-66.97000000000003, 5.47], [-67.5, 5.25], [-67.75, 5.35], [-67.82, 5.32], [-67.97000000000003, 4.97], [-68.5, 4.75], [-69.02999999999997, 4.97], [-69.25, 5.5], 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t2m anomaly over entire duration", "value": -2.8396150546493173}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.759044207412444, 26.107092682553173, 27.169351493626834, 28.247189875087486, 28.6382717614718, 28.882036734912504]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.757394825820086, 23.75942692538007, 25.16832352256199, 27.275438156944006, 27.962292467658642, 28.47533461635186]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9390343893351931, -3.86810184057036, -2.8545299816578233, -2.19506846373852, -1.852026917930279, -1.7102001717225903]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6506330623455483, -5.635017726404556, -4.898629219405109, -2.87194276363374, -2.09615813965911, -1.7135222583929135]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5796118300059558, -3.0364308463607754, -2.219971561287313, -1.6998358506451696, -1.4308534709057519, -1.3098741953177773]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.157937421843611, -4.368509070451547, -3.7087294503018486, -2.221503281306512, -1.6508109668837068, -1.3538718061206556]}}