{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:13.501868", "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-Mar-04_to_2022-Mar-06_349.0_16.5"}, "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": 2022030000155}, "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": "March 04 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 06 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": 62098.23342089337}, "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": ["Mauritania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 16.5}, "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": 349.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "349.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 347.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 353.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 17.53], [-12.0, 17.75], [-11.75, 17.65], [-11.5, 17.75], [-11.25, 17.65], [-11.0, 17.75], [-10.75, 17.65], [-10.5, 17.75], [-10.0, 17.54], [-9.5, 17.75], [-9.25, 17.65], [-9.18, 17.68], [-9.03, 18.03], [-8.5, 18.25], [-8.25, 18.15], [-8.0, 18.25], [-7.75, 18.15], [-7.68, 18.18], [-7.53, 18.53], [-7.0, 18.75], [-6.47, 18.53], [-6.25, 18.0], [-6.47, 17.47], [-6.82, 17.32], [-6.85, 17.25], [-6.75, 17.0], [-6.97, 16.47], [-7.5, 16.25], [-7.75, 16.35], [-7.82, 16.32], [-7.97, 15.97], [-8.5, 15.75], [-8.75, 15.85], [-9.0, 15.75], [-9.25, 15.85], [-9.5, 15.75], [-9.75, 15.85], [-10.0, 15.75], [-10.25, 15.85], [-10.5, 15.75], [-10.75, 15.85], [-11.0, 15.75], [-11.25, 15.85], [-11.5, 15.75], [-11.75, 15.85], [-12.0, 15.75], [-12.53, 15.97], [-12.75, 16.5], [-12.65, 16.75], [-12.75, 17.0], [-12.53, 17.53]]]]}, "2022-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 17.53], [-12.0, 17.75], [-11.75, 17.65], [-11.5, 17.75], [-11.25, 17.65], [-11.0, 17.75], [-10.75, 17.65], [-10.5, 17.75], [-10.0, 17.54], [-9.5, 17.75], [-9.25, 17.65], [-9.18, 17.68], [-9.03, 18.03], [-8.5, 18.25], [-8.25, 18.15], [-8.0, 18.25], [-7.75, 18.15], [-7.68, 18.18], [-7.53, 18.53], [-7.0, 18.75], [-6.47, 18.53], [-6.25, 18.0], [-6.47, 17.47], [-6.82, 17.32], [-6.85, 17.25], [-6.75, 17.0], [-6.97, 16.47], [-7.5, 16.25], [-7.75, 16.35], [-7.82, 16.32], [-7.97, 15.97], [-8.5, 15.75], [-8.75, 15.85], [-9.0, 15.75], [-9.25, 15.85], [-9.5, 15.75], [-9.75, 15.85], [-10.0, 15.75], [-10.25, 15.85], [-10.5, 15.75], [-10.75, 15.85], [-11.0, 15.75], [-11.25, 15.85], [-11.5, 15.75], [-11.75, 15.85], [-12.0, 15.75], [-12.53, 15.97], [-12.75, 16.5], [-12.65, 16.75], [-12.75, 17.0], [-12.53, 17.53]]]]}, "2022-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 17.53], [-12.0, 17.75], [-11.75, 17.65], [-11.5, 17.75], [-11.25, 17.65], [-11.0, 17.75], [-10.75, 17.65], [-10.5, 17.75], [-10.0, 17.54], [-9.5, 17.75], [-9.25, 17.65], [-9.18, 17.68], [-9.03, 18.03], [-8.5, 18.25], [-8.25, 18.15], [-8.0, 18.25], [-7.75, 18.15], [-7.68, 18.18], [-7.53, 18.53], [-7.0, 18.75], [-6.47, 18.53], [-6.25, 18.0], [-6.47, 17.47], [-6.82, 17.32], [-6.85, 17.25], [-6.75, 17.0], [-6.97, 16.47], [-7.5, 16.25], [-7.75, 16.35], [-7.82, 16.32], [-7.97, 15.97], [-8.5, 15.75], [-8.75, 15.85], [-9.0, 15.75], [-9.25, 15.85], [-9.5, 15.75], [-9.75, 15.85], [-10.0, 15.75], [-10.25, 15.85], [-10.5, 15.75], [-10.75, 15.85], [-11.0, 15.75], [-11.25, 15.85], [-11.5, 15.75], [-11.75, 15.85], [-12.0, 15.75], [-12.53, 15.97], [-12.75, 16.5], [-12.65, 16.75], [-12.75, 17.0], [-12.53, 17.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.2074041269849545}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.017185267578563}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.125726533944544, 22.467770376250087, 23.09481293377678]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.404300788918704, 18.485932064343103, 19.65711847913144]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7183472207883193, -4.446828942257024, -3.8863796396903467]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.114880516903156, -5.2074041269849545, -4.433341798706692]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4175242008418654, -1.7056486785900926, -1.494447792660284]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5698914061428553, -1.8911694517780133, -1.7308387285810432]}}