{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:55.406323", "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": "2026-Feb-28_to_2026-Mar-04_3.5_36.5"}, "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": 2026020002530}, "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 28 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 04 2026"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 55309.07623181069}, "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": ["Algeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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": ["Mediterranean Sea - Western Basin"]}, "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": 36.5}, "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": 3.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "3.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -0.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 4.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.03, 34.53], [1.25, 34.0], [1.03, 33.47], [0.5, 33.25], [0.25, 33.35], [0.0, 33.25], [-0.53, 33.47], [-0.75, 34.0], [-0.53, 34.53], [0.0, 34.75], [0.25, 34.65], [0.5, 34.75], [1.03, 34.53]]]]}, "2026-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.03, 34.53], [1.25, 34.0], [1.03, 33.47], [0.5, 33.25], [0.25, 33.35], [0.0, 33.25], [-0.53, 33.47], [-0.75, 34.0], [-0.53, 34.53], [0.0, 34.75], [0.25, 34.65], [0.5, 34.75], [1.03, 34.53]]]]}, "2026-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.53, 35.53], [-0.12, 35.7], [-0.25, 36.0], [-0.03, 36.53], [0.32, 36.68], [0.47, 37.03], [1.0, 37.25], [1.25, 37.15], [1.5, 37.25], [1.75, 37.15], [2.0, 37.25], [2.25, 37.15], [2.5, 37.25], [2.75, 37.15], [3.0, 37.25], [3.25, 37.15], [3.5, 37.25], [3.75, 37.15], [4.0, 37.25], [4.53, 37.03], [4.75, 36.5], [4.53, 35.97], [4.0, 35.75], [3.75, 35.85], [3.5, 35.75], [3.25, 35.85], [3.18, 35.82], [3.03, 35.47], [2.5, 35.25], [2.25, 35.35], [2.18, 35.32], [2.03, 34.97], [1.68, 34.82], [1.65, 34.75], [1.75, 34.5], [1.65, 34.25], [1.75, 34.0], [1.53, 33.47], [1.0, 33.25], [0.75, 33.35], [0.5, 33.25], [0.25, 33.35], [0.0, 33.25], [-0.53, 33.47], [-0.75, 34.0], [-0.54, 34.5], [-0.75, 35.0], [-0.53, 35.53]]]]}, "2026-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.53, 35.53], [-0.12, 35.7], [-0.25, 36.0], [-0.03, 36.53], [0.32, 36.68], [0.47, 37.03], [1.0, 37.25], [1.25, 37.15], [1.5, 37.25], [1.75, 37.15], [2.0, 37.25], [2.25, 37.15], [2.5, 37.25], [2.75, 37.15], [3.0, 37.25], [3.25, 37.15], [3.5, 37.25], [3.75, 37.15], [4.0, 37.25], [4.53, 37.03], [4.75, 36.5], [4.53, 35.97], [4.0, 35.75], [3.75, 35.85], [3.5, 35.75], [3.25, 35.85], [3.18, 35.82], [3.03, 35.47], [2.5, 35.25], [2.25, 35.35], [2.18, 35.32], [2.03, 34.97], [1.68, 34.82], [1.65, 34.75], [1.75, 34.5], [1.65, 34.25], [1.75, 34.0], [1.53, 33.47], [1.0, 33.25], [0.75, 33.35], [0.5, 33.25], [0.25, 33.35], [0.0, 33.25], [-0.53, 33.47], [-0.75, 34.0], [-0.54, 34.5], [-0.75, 35.0], [-0.53, 35.53]]]]}, "2026-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.75, 35.0], [-0.53, 35.53], [-0.12, 35.7], [-0.25, 36.0], [-0.03, 36.53], [0.32, 36.68], [0.47, 37.03], [1.0, 37.25], [1.25, 37.15], [1.5, 37.25], [1.75, 37.15], [2.0, 37.25], [2.25, 37.15], [2.5, 37.25], [2.75, 37.15], [3.0, 37.25], [3.25, 37.15], [3.5, 37.25], [3.75, 37.15], [4.0, 37.25], [4.53, 37.03], [4.75, 36.5], [4.53, 35.97], [4.0, 35.75], [3.75, 35.85], [3.5, 35.75], [3.25, 35.85], [3.18, 35.82], [3.03, 35.47], [2.5, 35.25], [2.25, 35.35], [2.18, 35.32], [2.03, 34.97], [1.68, 34.82], [1.65, 34.75], [1.75, 34.5], [1.65, 34.25], [1.75, 34.0], [1.53, 33.47], [1.0, 33.25], [0.47, 33.47], [0.32, 33.82], [-0.03, 33.97], [-0.18, 34.32], [-0.53, 34.47], [-0.75, 35.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.8229151310764}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.173021833570655}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.003755187988304, 13.831924692789698, 14.524525174227676, 16.53593655210551, 16.31117045084642]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.018159484863304, 13.869318898518884, 16.26851043701174, 19.06191533406576, 19.56141052246096]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.777938098551488, 4.54275393230526, 4.087016716451524, 5.9998770875687, 5.560621846632304]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.919369910340606, 4.640759978320489, 4.965873517289253, 8.437031836275025, 8.8229151310764]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4766443308556856, 1.4022194728505903, 1.40388038039975, 2.0671816319303074, 1.9429232966871788]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4823697924531434, 1.4061395768534402, 1.5411983890987453, 2.8789320264518423, 3.0216121148530934]}}