{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:46.436648", "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": "2025-Jul-25_to_2025-Jul-31_354.0_52.5"}, "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": 2025070002802}, "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": "July 25 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 31 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 73200.4687666877}, "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": ["Ireland", "United Kingdom"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe"]}, "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", "Irish Sea"]}, "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": 52.5}, "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": 354.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "354.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 350.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 355.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-8.5, 52.75], [-8.25, 52.65], [-8.18, 52.68], [-8.03, 53.03], [-7.5, 53.25], [-7.25, 53.15], [-7.0, 53.25], [-6.75, 53.15], [-6.5, 53.25], [-6.25, 53.15], [-6.0, 53.25], [-5.75, 53.15], [-5.5, 53.25], [-4.97, 53.03], [-4.75, 52.5], [-4.85, 52.25], [-4.82, 52.18], [-4.75, 52.15], [-4.5, 52.25], [-3.97, 52.03], [-3.75, 51.5], [-3.85, 51.25], [-3.75, 51.0], [-3.97, 50.47], [-4.5, 50.25], [-4.75, 50.35], [-5.0, 50.25], [-5.25, 50.35], [-5.32, 50.32], [-5.47, 49.97], [-5.82, 49.82], [-5.97, 49.47], [-6.5, 49.25], [-6.75, 49.35], [-7.0, 49.25], [-7.53, 49.47], [-7.68, 49.82], [-8.03, 49.97], [-8.18, 50.32], [-8.53, 50.47], [-8.68, 50.82], [-8.75, 50.85], [-9.0, 50.75], [-9.25, 50.85], [-9.5, 50.75], [-10.03, 50.97], [-10.25, 51.5], [-10.03, 52.03], [-9.68, 52.18], [-9.53, 52.53], [-9.0, 52.75], [-8.75, 52.65], [-8.5, 52.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.529999999999973, 53.03], [-6.0, 53.25], [-5.470000000000027, 53.03], [-5.25, 52.5], [-5.470000000000027, 51.97], [-6.0, 51.75], [-6.529999999999973, 51.97], [-6.75, 52.5], [-6.529999999999973, 53.03]]]]}, "2025-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.529999999999973, 53.03], [-6.0, 53.25], [-5.470000000000027, 53.03], [-5.25, 52.5], [-5.470000000000027, 51.97], [-6.0, 51.75], [-6.529999999999973, 51.97], [-6.75, 52.5], [-6.529999999999973, 53.03]]]]}, "2025-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-6.529999999999973, 53.03], [-6.0, 53.25], [-5.470000000000027, 53.03], [-5.25, 52.5], [-5.470000000000027, 51.97], [-6.0, 51.75], [-6.529999999999973, 51.97], [-6.75, 52.5], [-6.529999999999973, 53.03]]]]}, "2025-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.0, 51.25], [-8.529999999999973, 51.47], [-8.75, 52.0], [-8.529999999999973, 52.53], [-8.0, 52.75], [-7.75, 52.65], [-7.5, 52.75], [-7.25, 52.65], [-7.180000000000007, 52.68], [-7.029999999999973, 53.03], [-6.5, 53.25], [-6.25, 53.15], [-6.0, 53.25], [-5.75, 53.15], [-5.5, 53.25], [-4.970000000000027, 53.03], [-4.75, 52.5], [-4.850000000000023, 52.25], [-4.800000000000011, 52.12], [-4.5, 52.25], [-3.9700000000000273, 52.03], [-3.75, 51.5], [-3.9700000000000273, 50.97], [-4.5, 50.75], [-5.029999999999973, 50.97], [-5.199999999999989, 51.38], [-5.5, 51.25], [-5.75, 51.35], [-6.0, 51.25], [-6.25, 51.35], [-6.5, 51.25], [-6.75, 51.35], [-7.0, 51.25], [-7.25, 51.35], [-7.5, 51.25], [-7.75, 51.35], [-8.0, 51.25]]]]}, "2025-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.529999999999973, 52.53], [-9.0, 52.75], [-8.75, 52.65], [-8.5, 52.75], [-8.25, 52.65], [-8.180000000000007, 52.68], [-8.029999999999973, 53.03], [-7.5, 53.25], [-7.25, 53.15], [-7.0, 53.25], [-6.75, 53.15], [-6.5, 53.25], [-6.25, 53.15], [-6.0, 53.25], [-5.75, 53.15], [-5.5, 53.25], [-4.970000000000027, 53.03], [-4.75, 52.5], [-4.850000000000023, 52.25], [-4.819999999999993, 52.18], [-4.75, 52.15], [-4.5, 52.25], [-3.9700000000000273, 52.03], [-3.75, 51.5], [-3.8500000000000227, 51.25], [-3.75, 51.0], [-3.9700000000000273, 50.47], [-4.5, 50.25], [-4.75, 50.35], [-5.0, 50.25], [-5.25, 50.35], [-5.319999999999993, 50.32], [-5.470000000000027, 49.97], [-5.819999999999993, 49.82], [-5.970000000000027, 49.47], [-6.5, 49.25], [-6.75, 49.35], [-7.0, 49.25], [-7.529999999999973, 49.47], [-7.680000000000007, 49.82], [-8.029999999999973, 49.97], [-8.180000000000007, 50.32], [-8.529999999999973, 50.47], [-8.680000000000007, 50.82], [-8.75, 50.85], [-9.0, 50.75], [-9.25, 50.85], [-9.5, 50.75], [-10.029999999999973, 50.97], [-10.25, 51.5], [-10.029999999999973, 52.03], [-9.680000000000007, 52.18], [-9.529999999999973, 52.53]]]]}, "2025-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.529999999999973, 52.53], [-9.0, 52.75], [-8.75, 52.65], [-8.5, 52.75], [-8.25, 52.65], [-8.180000000000007, 52.68], [-8.029999999999973, 53.03], [-7.5, 53.25], [-7.25, 53.15], [-7.0, 53.25], [-6.75, 53.15], [-6.5, 53.25], [-6.25, 53.15], [-6.0, 53.25], [-5.75, 53.15], [-5.5, 53.25], [-4.970000000000027, 53.03], [-4.75, 52.5], [-4.850000000000023, 52.25], [-4.819999999999993, 52.18], [-4.75, 52.15], [-4.5, 52.25], [-3.9700000000000273, 52.03], [-3.75, 51.5], [-3.8500000000000227, 51.25], [-3.75, 51.0], [-3.9700000000000273, 50.47], [-4.5, 50.25], [-4.75, 50.35], [-5.0, 50.25], [-5.25, 50.35], [-5.319999999999993, 50.32], [-5.470000000000027, 49.97], [-5.819999999999993, 49.82], [-5.970000000000027, 49.47], [-6.5, 49.25], [-6.75, 49.35], [-7.0, 49.25], [-7.529999999999973, 49.47], [-7.680000000000007, 49.82], [-8.029999999999973, 49.97], [-8.180000000000007, 50.32], [-8.529999999999973, 50.47], [-8.680000000000007, 50.82], [-8.75, 50.85], [-9.0, 50.75], [-9.25, 50.85], [-9.5, 50.75], [-10.029999999999973, 50.97], [-10.25, 51.5], [-10.029999999999973, 52.03], [-9.680000000000007, 52.18], [-9.529999999999973, 52.53]]]]}, "2025-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.529999999999973, 52.53], [-9.0, 52.75], [-8.75, 52.65], [-8.5, 52.75], [-8.25, 52.65], [-8.180000000000007, 52.68], [-8.029999999999973, 53.03], [-7.5, 53.25], [-7.25, 53.15], [-7.0, 53.25], [-6.75, 53.15], [-6.5, 53.25], [-6.25, 53.15], [-6.0, 53.25], [-5.470000000000027, 53.03], [-5.25, 52.5], [-5.350000000000023, 52.25], [-5.319999999999993, 52.18], [-5.25, 52.15], [-5.0, 52.25], [-4.75, 52.15], [-4.5, 52.25], [-3.9700000000000273, 52.03], [-3.75, 51.5], [-3.8500000000000227, 51.25], [-3.75, 51.0], [-3.9700000000000273, 50.47], [-4.5, 50.25], [-4.75, 50.35], [-5.0, 50.25], [-5.25, 50.35], [-5.319999999999993, 50.32], [-5.470000000000027, 49.97], [-5.819999999999993, 49.82], [-5.970000000000027, 49.47], [-6.5, 49.25], [-6.75, 49.35], [-7.0, 49.25], [-7.529999999999973, 49.47], [-7.680000000000007, 49.82], [-8.029999999999973, 49.97], [-8.180000000000007, 50.32], [-8.529999999999973, 50.47], [-8.680000000000007, 50.82], [-8.75, 50.85], [-9.0, 50.75], [-9.25, 50.85], [-9.5, 50.75], [-10.029999999999973, 50.97], [-10.25, 51.5], [-10.029999999999973, 52.03], [-9.680000000000007, 52.18], [-9.529999999999973, 52.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.033616670003994}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.7950645496319766}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.71509195963546, 16.77419560750326, 16.299719746907556, 17.024877929687534, 18.002189221298522, 17.740809711657107, 17.74979058724864]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.71509195963546, 16.77419560750326, 16.299719746907556, 17.556502278645837, 18.80563888549807, 18.400160725911462, 18.32583134969076]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.5084216608232737, 1.509164923548326, 1.0607401270401624, 1.4800819118835988, 2.0216163147403714, 1.7730109803954166, 1.703002379405261]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.5084216608232737, 1.509164923548326, 1.0607401270401624, 1.7454661123842925, 3.033616670003994, 2.739928419028331, 2.3086441905946913]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8231631919610694, 1.8211663860230367, 1.2368592515112409, 1.523269460176204, 2.026905861020812, 1.7685419395917454, 1.6261591292625825]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8231631919610694, 1.8211663860230367, 1.2368592515112409, 1.8948353255159982, 2.9618936379737724, 2.6571040901110003, 2.1824508598352383]}}