{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:23:54.170471", "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": "2021-Apr-13_to_2021-Apr-18_309.0_6.5"}, "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": 2021040002148}, "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": "April 13 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 18 2021"}, "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": "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": 101311.14476012031}, "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": ["French Guiana"]}, "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": ["Atlantic 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": 6.5}, "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": 309.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "309.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 306.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 311.0}, "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": 8.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-53.0, 4.75], [-53.25, 4.854], [-53.5, 4.75], [-54.03, 4.97], [-54.25, 5.5], [-54.03, 6.03], [-53.677, 6.177], [-53.625, 6.302], [-54.03, 6.47], [-54.177, 6.823], [-54.53, 6.97], [-54.75, 7.5], [-54.53, 8.03], [-54.0, 8.25], [-53.47, 8.03], [-53.323, 7.677], [-53.25, 7.646], [-53.0, 7.75], [-52.75, 7.646], [-52.5, 7.75], [-52.25, 7.646], [-52.0, 7.75], [-51.75, 7.646], [-51.5, 7.75], [-51.25, 7.646], [-51.177, 7.677], [-51.03, 8.03], [-50.5, 8.25], [-50.25, 8.146], [-50.177, 8.177], [-50.03, 8.53], [-49.5, 8.75], [-49.25, 8.646], [-49.0, 8.75], [-48.47, 8.53], [-48.25, 8.0], [-48.354, 7.75], [-48.25, 7.5], [-48.47, 6.97], [-48.823, 6.823], [-48.97, 6.47], [-49.323, 6.323], [-49.354, 6.25], [-49.25, 6.0], [-49.47, 5.47], [-50.0, 5.25], [-50.25, 5.354], [-50.323, 5.323], [-50.47, 4.97], [-51.0, 4.75], [-51.25, 4.854], [-51.5, 4.75], [-52.03, 4.97], [-52.177, 5.323], [-52.25, 5.354], [-52.323, 5.323], [-52.47, 4.97], [-53.0, 4.75]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.Atlantic-Ocean", "Equatorial.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-04-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-50.75, 5.853553390593278], [-51.0, 5.75], [-51.53033008588989, 5.9696699141100895], [-51.75, 6.5], [-51.53033008588989, 7.0303300858899105], [-51.0, 7.25], [-50.75, 7.146446609406722], [-50.5, 7.25], [-50.25, 7.146446609406722], [-50.0, 7.25], [-49.46966991411011, 7.0303300858899105], [-49.25, 6.5], [-49.35355339059328, 6.25], [-49.25, 6.0], [-49.46966991411011, 5.4696699141100895], [-50.0, 5.25], [-50.53033008588989, 5.4696699141100895], [-50.67677669529661, 5.8232233047033635], [-50.75, 5.853553390593278]]]}, "2021-04-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-54.17677669529661, 6.8232233047033635], [-54.53033008588989, 6.9696699141100895], [-54.75, 7.5], [-54.53033008588989, 8.030330085889911], [-54.0, 8.25], [-53.46966991411011, 8.030330085889911], [-53.32322330470339, 7.6767766952966365], [-53.25, 7.646446609406722], [-53.0, 7.75], [-52.75, 7.646446609406722], [-52.5, 7.75], [-52.25, 7.646446609406722], [-52.0, 7.75], [-51.75, 7.646446609406722], [-51.5, 7.75], [-51.25, 7.646446609406722], [-51.17677669529661, 7.6767766952966365], [-51.03033008588989, 8.030330085889911], [-50.5, 8.25], [-50.25, 8.146446609406722], [-50.17677669529661, 8.176776695296637], [-50.03033008588989, 8.530330085889911], [-49.5, 8.75], [-49.25, 8.646446609406722], [-49.0, 8.75], [-48.46966991411011, 8.530330085889911], [-48.25, 8.0], [-48.35355339059328, 7.75], [-48.25, 7.5], [-48.46966991411011, 6.9696699141100895], [-48.82322330470339, 6.8232233047033635], [-48.96966991411011, 6.4696699141100895], [-49.32322330470339, 6.3232233047033635], [-49.35355339059328, 6.25], [-49.25, 6.0], [-49.46966991411011, 5.4696699141100895], [-50.0, 5.25], [-50.25, 5.353553390593278], [-50.32322330470339, 5.3232233047033635], [-50.46966991411011, 4.9696699141100895], [-51.0, 4.75], [-51.25, 4.853553390593278], [-51.5, 4.75], [-52.03033008588989, 4.9696699141100895], [-52.17677669529661, 5.3232233047033635], [-52.25, 5.353553390593278], [-52.5, 5.25], [-53.03033008588989, 5.4696699141100895], [-53.25, 6.0], [-53.14644660940672, 6.25], [-53.17677669529661, 6.3232233047033635], [-53.25, 6.353553390593278], [-53.5, 6.25], [-54.03033008588989, 6.4696699141100895], [-54.17677669529661, 6.8232233047033635]]]}, "2021-04-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-54.17677669529661, 6.8232233047033635], [-54.53033008588989, 6.9696699141100895], [-54.75, 7.5], [-54.53033008588989, 8.030330085889911], [-54.0, 8.25], [-53.46966991411011, 8.030330085889911], [-53.32322330470339, 7.6767766952966365], [-53.25, 7.646446609406722], [-53.0, 7.75], [-52.75, 7.646446609406722], [-52.5, 7.75], [-52.25, 7.646446609406722], [-52.0, 7.75], [-51.75, 7.646446609406722], [-51.5, 7.75], [-51.25, 7.646446609406722], [-51.17677669529661, 7.6767766952966365], [-51.03033008588989, 8.030330085889911], [-50.5, 8.25], [-50.25, 8.146446609406722], [-50.17677669529661, 8.176776695296637], [-50.03033008588989, 8.530330085889911], [-49.5, 8.75], [-49.25, 8.646446609406722], [-49.0, 8.75], [-48.46966991411011, 8.530330085889911], [-48.25, 8.0], [-48.35355339059328, 7.75], [-48.25, 7.5], [-48.46966991411011, 6.9696699141100895], [-48.82322330470339, 6.8232233047033635], [-48.96966991411011, 6.4696699141100895], [-49.32322330470339, 6.3232233047033635], [-49.35355339059328, 6.25], [-49.25, 6.0], [-49.46966991411011, 5.4696699141100895], [-50.0, 5.25], [-50.25, 5.353553390593278], [-50.32322330470339, 5.3232233047033635], [-50.46966991411011, 4.9696699141100895], [-51.0, 4.75], [-51.25, 4.853553390593278], [-51.5, 4.75], [-52.03033008588989, 4.9696699141100895], [-52.17677669529661, 5.3232233047033635], [-52.25, 5.353553390593278], [-52.5, 5.25], [-53.03033008588989, 5.4696699141100895], [-53.25, 6.0], [-53.14644660940672, 6.25], [-53.17677669529661, 6.3232233047033635], [-53.25, 6.353553390593278], [-53.5, 6.25], [-54.03033008588989, 6.4696699141100895], [-54.17677669529661, 6.8232233047033635]]]}, "2021-04-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-54.17677669529661, 6.8232233047033635], [-54.53033008588989, 6.9696699141100895], [-54.75, 7.5], [-54.53033008588989, 8.030330085889911], [-54.0, 8.25], [-53.46966991411011, 8.030330085889911], [-53.32322330470339, 7.6767766952966365], [-53.25, 7.646446609406722], [-53.0, 7.75], [-52.75, 7.646446609406722], [-52.5, 7.75], [-52.25, 7.646446609406722], [-52.0, 7.75], [-51.75, 7.646446609406722], [-51.5, 7.75], [-51.25, 7.646446609406722], [-51.17677669529661, 7.6767766952966365], [-51.03033008588989, 8.030330085889911], [-50.5, 8.25], [-50.25, 8.146446609406722], [-50.17677669529661, 8.176776695296637], [-50.03033008588989, 8.530330085889911], [-49.5, 8.75], [-49.25, 8.646446609406722], [-49.0, 8.75], [-48.46966991411011, 8.530330085889911], [-48.25, 8.0], [-48.35355339059328, 7.75], [-48.25, 7.5], [-48.46966991411011, 6.9696699141100895], [-48.82322330470339, 6.8232233047033635], [-48.96966991411011, 6.4696699141100895], [-49.32322330470339, 6.3232233047033635], [-49.35355339059328, 6.25], [-49.25, 6.0], [-49.46966991411011, 5.4696699141100895], [-50.0, 5.25], [-50.25, 5.353553390593278], [-50.32322330470339, 5.3232233047033635], [-50.46966991411011, 4.9696699141100895], [-51.0, 4.75], [-51.25, 4.853553390593278], [-51.5, 4.75], [-52.03033008588989, 4.9696699141100895], [-52.17677669529661, 5.3232233047033635], [-52.25, 5.353553390593278], [-52.32322330470339, 5.3232233047033635], [-52.46966991411011, 4.9696699141100895], [-53.0, 4.75], [-53.25, 4.853553390593278], [-53.5, 4.75], [-54.03033008588989, 4.9696699141100895], [-54.25, 5.5], [-54.03033008588989, 6.0303300858899105], [-53.67677669529661, 6.1767766952966365], [-53.625, 6.301776695296634], [-54.03033008588989, 6.4696699141100895], [-54.17677669529661, 6.8232233047033635]]]}, "2021-04-17T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-54.17677669529661, 6.8232233047033635], [-54.53033008588989, 6.9696699141100895], [-54.75, 7.5], [-54.53033008588989, 8.030330085889911], [-54.0, 8.25], [-53.46966991411011, 8.030330085889911], [-53.32322330470339, 7.6767766952966365], [-53.25, 7.646446609406722], [-53.0, 7.75], [-52.75, 7.646446609406722], [-52.5, 7.75], [-52.25, 7.646446609406722], [-52.0, 7.75], [-51.75, 7.646446609406722], [-51.5, 7.75], [-51.25, 7.646446609406722], [-51.17677669529661, 7.6767766952966365], [-51.03033008588989, 8.030330085889911], [-50.5, 8.25], [-50.25, 8.146446609406722], [-50.0, 8.25], [-49.46966991411011, 8.030330085889911], [-49.32322330470339, 7.6767766952966365], [-48.96966991411011, 7.5303300858899105], [-48.75, 7.0], [-48.96966991411011, 6.4696699141100895], [-49.32322330470339, 6.3232233047033635], [-49.35355339059328, 6.25], [-49.25, 6.0], [-49.46966991411011, 5.4696699141100895], [-50.0, 5.25], [-50.25, 5.353553390593278], [-50.32322330470339, 5.3232233047033635], [-50.46966991411011, 4.9696699141100895], [-51.0, 4.75], [-51.25, 4.853553390593278], [-51.5, 4.75], [-52.03033008588989, 4.9696699141100895], [-52.17677669529661, 5.3232233047033635], [-52.25, 5.353553390593278], [-52.32322330470339, 5.3232233047033635], [-52.46966991411011, 4.9696699141100895], [-53.0, 4.75], [-53.25, 4.853553390593278], [-53.5, 4.75], [-54.03033008588989, 4.9696699141100895], [-54.25, 5.5], [-54.03033008588989, 6.0303300858899105], [-53.67677669529661, 6.1767766952966365], [-53.625, 6.301776695296634], [-54.03033008588989, 6.4696699141100895], [-54.17677669529661, 6.8232233047033635]]]}, "2021-04-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-53.67677669529661, 6.1767766952966365], [-53.53033008588989, 6.5303300858899105], [-53.0, 6.75], [-52.46966991411011, 6.5303300858899105], [-52.25, 6.0], [-52.35355339059328, 5.75], [-52.25, 5.5], [-52.46966991411011, 4.9696699141100895], [-53.0, 4.75], [-53.25, 4.853553390593278], [-53.5, 4.75], [-54.03033008588989, 4.9696699141100895], [-54.25, 5.5], [-54.03033008588989, 6.0303300858899105], [-53.67677669529661, 6.1767766952966365]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.2286980525643685}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 0.8181144548268808}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.07384808434466, 27.38997995246308, 27.190653937979505, 27.30039532950741, 27.29089439361269, 27.162545081390874]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.106007832256807, 27.663701153022203, 27.417555390155997, 27.56845882266697, 27.509473515799243, 27.212459690129492]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.6315134482553049, 0.9469277844363887, 0.7226879417397584, 0.8335002771255001, 0.7848352660116179, 0.885502411627859]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.6503127205030523, 1.1596944669245772, 0.8729755812571511, 1.2286980525643685, 1.0818992655081843, 1.0287511124387265]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4158513818022582, 2.014597727331649, 1.532387313567361, 1.7408357761415736, 1.6176939019129444, 1.511011599182779]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4440180828778915, 2.4746103943468074, 1.8315045631473246, 2.237674803946619, 2.04940667612296, 1.6142795205450868]}}