{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:45.856630", "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": "2020-Jul-31_to_2020-Aug-08_320.5_64.5"}, "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": 2020070003561}, "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 31 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 08 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 54455.66101258954}, "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": ["Greenland"]}, "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": 64.5}, "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": 320.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "320.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 318.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 326.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 61.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 65.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-42.03, 62.53], [-41.5, 62.75], [-41.25, 62.646], [-41.177, 62.677], [-41.146, 62.75], [-41.25, 63.0], [-41.03, 63.53], [-40.677, 63.677], [-40.646, 63.75], [-40.75, 64.0], [-40.646, 64.25], [-40.75, 64.5], [-40.53, 65.03], [-40.177, 65.177], [-40.03, 65.53], [-39.5, 65.75], [-39.25, 65.646], [-39.249, 65.646], [-39.0, 65.75], [-38.751, 65.646], [-38.75, 65.646], [-38.5, 65.75], [-38.25, 65.646], [-38.0, 65.75], [-37.47, 65.53], [-37.323, 65.177], [-37.25, 65.146], [-37.177, 65.177], [-37.03, 65.53], [-36.5, 65.75], [-36.25, 65.646], [-36.177, 65.677], [-36.03, 66.03], [-35.5, 66.25], [-35.25, 66.146], [-35.0, 66.25], [-34.75, 66.146], [-34.5, 66.25], [-34.25, 66.146], [-34.0, 66.25], [-33.47, 66.03], [-33.25, 65.5], [-33.47, 64.97], [-34.0, 64.75], [-34.25, 64.854], [-34.5, 64.75], [-34.75, 64.854], [-34.774, 64.844], [-34.823, 64.823], [-34.97, 64.47], [-35.5, 64.25], [-35.75, 64.354], [-35.823, 64.323], [-35.97, 63.97], [-36.5, 63.75], [-36.75, 63.854], [-36.823, 63.823], [-36.97, 63.47], [-37.323, 63.323], [-37.47, 62.97], [-38.0, 62.75], [-38.25, 62.854], [-38.5, 62.75], [-38.75, 62.854], [-38.823, 62.823], [-38.97, 62.47], [-39.323, 62.323], [-39.47, 61.97], [-39.823, 61.823], [-39.97, 61.47], [-40.5, 61.25], [-40.75, 61.354], [-40.823, 61.323], [-40.97, 60.97], [-41.323, 60.823], [-41.47, 60.47], [-42.0, 60.25], [-42.53, 60.47], [-42.75, 61.0], [-42.646, 61.25], [-42.75, 61.5], [-42.53, 62.03], [-42.177, 62.177], [-42.03, 62.53]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Greenland/Iceland"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-31T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-35.25, 64.85355339059328], [-35.5, 64.75], [-36.03033008588989, 64.96966991411009], [-36.25, 65.5], [-36.03033008588989, 66.03033008588991], [-35.5, 66.25], [-35.25, 66.14644660940672], [-35.0, 66.25], [-34.46966991411011, 66.03033008588991], [-34.25, 65.5], [-34.46966991411011, 64.96966991411009], [-35.0, 64.75], [-35.25, 64.85355339059328]]]}, "2020-08-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-42.64644660940672, 61.25], [-42.75, 61.5], [-42.53033008588989, 62.03033008588991], [-42.17677669529661, 62.17677669529664], [-42.03033008588989, 62.53033008588991], [-41.5, 62.75], [-41.25, 62.64644660940672], [-41.17677669529661, 62.67677669529664], [-41.14644660940672, 62.75], [-41.25, 63.0], [-41.03033008588989, 63.53033008588991], [-40.67677669529661, 63.67677669529664], [-40.64644660940672, 63.75], [-40.75, 64.0], [-40.64644660940672, 64.25], [-40.75, 64.5], [-40.53033008588989, 65.03033008588991], [-40.17677669529661, 65.17677669529664], [-40.03033008588989, 65.53033008588991], [-39.5, 65.75], [-39.25, 65.64644660940672], [-39.0, 65.75], [-38.75, 65.64644660940672], [-38.5, 65.75], [-38.25, 65.64644660940672], [-38.0, 65.75], [-37.46966991411011, 65.53033008588991], [-37.32322330470339, 65.17677669529664], [-37.25, 65.14644660940672], [-37.17677669529661, 65.17677669529664], [-37.03033008588989, 65.53033008588991], [-36.5, 65.75], [-36.25, 65.64644660940672], [-36.17677669529661, 65.67677669529664], [-36.03033008588989, 66.03033008588991], [-35.5, 66.25], [-35.25, 66.14644660940672], [-35.0, 66.25], [-34.75, 66.14644660940672], [-34.5, 66.25], [-34.25, 66.14644660940672], [-34.0, 66.25], [-33.46966991411011, 66.03033008588991], [-33.25, 65.5], [-33.46966991411011, 64.96966991411009], [-34.0, 64.75], [-34.25, 64.85355339059328], [-34.5, 64.75], [-34.75, 64.85355339059328], [-34.82322330470339, 64.82322330470336], [-34.96966991411011, 64.46966991411009], [-35.5, 64.25], [-35.75, 64.35355339059328], [-35.82322330470339, 64.32322330470336], [-35.96966991411011, 63.96966991411009], [-36.5, 63.75], [-36.75, 63.85355339059328], [-36.82322330470339, 63.82322330470336], [-36.96966991411011, 63.46966991411009], [-37.32322330470339, 63.32322330470336], [-37.46966991411011, 62.96966991411009], [-38.0, 62.75], [-38.25, 62.85355339059328], [-38.5, 62.75], [-38.75, 62.85355339059328], [-38.82322330470339, 62.82322330470336], [-38.96966991411011, 62.46966991411009], [-39.32322330470339, 62.32322330470336], [-39.46966991411011, 61.96966991411009], [-39.82322330470339, 61.82322330470336], [-39.96966991411011, 61.46966991411009], [-40.5, 61.25], [-40.75, 61.35355339059328], [-40.82322330470339, 61.32322330470336], [-40.96966991411011, 60.96966991411009], [-41.32322330470339, 60.82322330470336], [-41.46966991411011, 60.46966991411009], [-42.0, 60.25], [-42.53033008588989, 60.46966991411009], [-42.75, 61.0], [-42.64644660940672, 61.25]]]}, "2020-08-02T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-42.64644660940672, 61.25], [-42.75, 61.5], [-42.53033008588989, 62.03033008588991], [-42.17677669529661, 62.17677669529664], [-42.03033008588989, 62.53033008588991], [-41.5, 62.75], [-41.25, 62.64644660940672], [-41.17677669529661, 62.67677669529664], [-41.14644660940672, 62.75], [-41.25, 63.0], [-41.03033008588989, 63.53033008588991], [-40.67677669529661, 63.67677669529664], [-40.64644660940672, 63.75], [-40.75, 64.0], [-40.64644660940672, 64.25], [-40.75, 64.5], [-40.53033008588989, 65.03033008588991], [-40.17677669529661, 65.17677669529664], [-40.03033008588989, 65.53033008588991], [-39.5, 65.75], [-39.25, 65.64644660940672], [-39.0, 65.75], [-38.75, 65.64644660940672], [-38.5, 65.75], [-38.25, 65.64644660940672], [-38.0, 65.75], [-37.46966991411011, 65.53033008588991], [-37.32322330470339, 65.17677669529664], [-37.25, 65.14644660940672], [-37.17677669529661, 65.17677669529664], [-37.03033008588989, 65.53033008588991], [-36.5, 65.75], [-36.25, 65.64644660940672], [-36.17677669529661, 65.67677669529664], [-36.03033008588989, 66.03033008588991], [-35.5, 66.25], [-35.25, 66.14644660940672], [-35.0, 66.25], [-34.75, 66.14644660940672], [-34.5, 66.25], [-34.25, 66.14644660940672], [-34.0, 66.25], [-33.46966991411011, 66.03033008588991], [-33.25, 65.5], [-33.46966991411011, 64.96966991411009], [-34.0, 64.75], [-34.25, 64.85355339059328], [-34.5, 64.75], [-34.75, 64.85355339059328], [-34.82322330470339, 64.82322330470336], [-34.96966991411011, 64.46966991411009], [-35.5, 64.25], [-35.75, 64.35355339059328], [-35.82322330470339, 64.32322330470336], [-35.96966991411011, 63.96966991411009], [-36.5, 63.75], [-36.75, 63.85355339059328], [-36.82322330470339, 63.82322330470336], [-36.96966991411011, 63.46966991411009], [-37.32322330470339, 63.32322330470336], [-37.46966991411011, 62.96966991411009], [-38.0, 62.75], [-38.25, 62.85355339059328], [-38.5, 62.75], [-38.75, 62.85355339059328], [-38.82322330470339, 62.82322330470336], [-38.96966991411011, 62.46966991411009], [-39.32322330470339, 62.32322330470336], [-39.46966991411011, 61.96966991411009], [-39.82322330470339, 61.82322330470336], [-39.96966991411011, 61.46966991411009], [-40.5, 61.25], [-40.75, 61.35355339059328], [-40.82322330470339, 61.32322330470336], [-40.96966991411011, 60.96966991411009], [-41.32322330470339, 60.82322330470336], [-41.46966991411011, 60.46966991411009], [-42.0, 60.25], [-42.53033008588989, 60.46966991411009], [-42.75, 61.0], [-42.64644660940672, 61.25]]]}, "2020-08-03T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-42.64644660940672, 61.25], [-42.75, 61.5], [-42.53033008588989, 62.03033008588991], [-42.17677669529661, 62.17677669529664], [-42.03033008588989, 62.53033008588991], [-41.5, 62.75], [-41.25, 62.64644660940672], [-41.17677669529661, 62.67677669529664], [-41.14644660940672, 62.75], [-41.25, 63.0], [-41.03033008588989, 63.53033008588991], [-40.67677669529661, 63.67677669529664], [-40.64644660940672, 63.75], [-40.75, 64.0], [-40.64644660940672, 64.25], [-40.75, 64.5], [-40.53033008588989, 65.03033008588991], [-40.17677669529661, 65.17677669529664], [-40.03033008588989, 65.53033008588991], [-39.5, 65.75], [-39.25, 65.64644660940672], [-39.0, 65.75], [-38.75, 65.64644660940672], [-38.5, 65.75], [-38.25, 65.64644660940672], [-38.0, 65.75], [-37.46966991411011, 65.53033008588991], [-37.32322330470339, 65.17677669529664], [-37.25, 65.14644660940672], [-37.17677669529661, 65.17677669529664], [-37.03033008588989, 65.53033008588991], [-36.5, 65.75], [-36.25, 65.64644660940672], [-36.17677669529661, 65.67677669529664], [-36.03033008588989, 66.03033008588991], [-35.5, 66.25], [-35.25, 66.14644660940672], [-35.0, 66.25], [-34.75, 66.14644660940672], [-34.5, 66.25], [-34.25, 66.14644660940672], [-34.0, 66.25], [-33.46966991411011, 66.03033008588991], [-33.25, 65.5], [-33.46966991411011, 64.96966991411009], [-34.0, 64.75], [-34.25, 64.85355339059328], [-34.5, 64.75], [-34.75, 64.85355339059328], [-34.82322330470339, 64.82322330470336], [-34.96966991411011, 64.46966991411009], [-35.5, 64.25], [-35.75, 64.35355339059328], [-35.82322330470339, 64.32322330470336], [-35.96966991411011, 63.96966991411009], [-36.5, 63.75], [-36.75, 63.85355339059328], [-36.82322330470339, 63.82322330470336], [-36.96966991411011, 63.46966991411009], [-37.32322330470339, 63.32322330470336], [-37.46966991411011, 62.96966991411009], [-38.0, 62.75], [-38.25, 62.85355339059328], [-38.5, 62.75], [-38.75, 62.85355339059328], [-38.82322330470339, 62.82322330470336], [-38.96966991411011, 62.46966991411009], [-39.32322330470339, 62.32322330470336], [-39.46966991411011, 61.96966991411009], [-39.82322330470339, 61.82322330470336], [-39.96966991411011, 61.46966991411009], [-40.5, 61.25], [-40.75, 61.35355339059328], [-40.82322330470339, 61.32322330470336], [-40.96966991411011, 60.96966991411009], [-41.32322330470339, 60.82322330470336], [-41.46966991411011, 60.46966991411009], [-42.0, 60.25], [-42.53033008588989, 60.46966991411009], [-42.75, 61.0], [-42.64644660940672, 61.25]]]}, "2020-08-04T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-40.17677669529661, 64.67677669529664], [-40.03033008588989, 65.03033008588991], [-39.67677669529661, 65.17677669529664], [-39.53033008588989, 65.53033008588991], [-39.0, 65.75], [-38.75, 65.64644660940672], [-38.5, 65.75], [-37.96966991411011, 65.53033008588991], [-37.75, 65.0], [-37.96966991411011, 64.46966991411009], [-38.32322330470339, 64.32322330470336], [-38.46966991411011, 63.96966991411009], [-38.82322330470339, 63.82322330470336], [-38.96966991411011, 63.46966991411009], [-39.5, 63.25], [-39.75, 63.35355339059328], [-40.0, 63.25], [-40.53033008588989, 63.46966991411009], [-40.75, 64.0], [-40.53033008588989, 64.53033008588991], [-40.17677669529661, 64.67677669529664]]]}, "2020-08-05T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-40.17677669529661, 64.67677669529664], [-40.14644660940672, 64.75], [-40.25, 65.0], [-40.03033008588989, 65.53033008588991], [-39.5, 65.75], [-38.96966991411011, 65.53033008588991], [-38.75, 65.0], [-38.85355339059328, 64.75], [-38.75, 64.5], [-38.96966991411011, 63.96966991411009], [-39.32322330470339, 63.82322330470336], [-39.46966991411011, 63.46966991411009], [-40.0, 63.25], [-40.53033008588989, 63.46966991411009], [-40.75, 64.0], [-40.53033008588989, 64.53033008588991], [-40.17677669529661, 64.67677669529664]]]}, "2020-08-06T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-40.17677669529661, 64.67677669529664], [-40.14644660940672, 64.75], [-40.25, 65.0], [-40.03033008588989, 65.53033008588991], [-39.5, 65.75], [-39.0, 65.54289321881345], [-38.5, 65.75], [-37.96966991411011, 65.53033008588991], [-37.75, 65.0], [-37.96966991411011, 64.46966991411009], [-38.32322330470339, 64.32322330470336], [-38.46966991411011, 63.96966991411009], [-39.0, 63.75], [-39.25, 63.85355339059328], [-39.32322330470339, 63.82322330470336], [-39.46966991411011, 63.46966991411009], [-40.0, 63.25], [-40.53033008588989, 63.46966991411009], [-40.75, 64.0], [-40.53033008588989, 64.53033008588991], [-40.17677669529661, 64.67677669529664]]]}, "2020-08-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-40.14644660940672, 64.75], [-40.25, 65.0], [-40.03033008588989, 65.53033008588991], [-39.5, 65.75], [-39.0, 65.54289321881345], [-38.5, 65.75], [-37.96966991411011, 65.53033008588991], [-37.75, 65.0], [-37.96966991411011, 64.46966991411009], [-38.32322330470339, 64.32322330470336], [-38.46966991411011, 63.96966991411009], [-39.0, 63.75], [-39.25, 63.85355339059328], [-39.5, 63.75], [-40.03033008588989, 63.96966991411009], [-40.25, 64.5], [-40.14644660940672, 64.75]]]}, "2020-08-08T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-39.17677669529661, 65.17677669529664], [-39.03033008588989, 65.53033008588991], [-38.5, 65.75], [-37.96966991411011, 65.53033008588991], [-37.75, 65.0], [-37.96966991411011, 64.46966991411009], [-38.32322330470339, 64.32322330470336], [-38.46966991411011, 63.96966991411009], [-39.0, 63.75], [-39.53033008588989, 63.96966991411009], [-39.75, 64.5], [-39.53033008588989, 65.03033008588991], [-39.17677669529661, 65.17677669529664]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.945883193087127}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.7222547524781655}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.7059458993984435, 8.439752204145123, 8.568280590823747, 8.265706280771496, 7.392440228741009, 6.778471520319556, 7.982139544047357, 6.937561671775427, 7.340325917586483]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.8795499998842615, 9.842268421821416, 10.36882313865857, 9.475991096376504, 8.288695939676415, 7.451111969776036, 8.614883209599952, 7.590184703702391, 7.63839216715985]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.238744192507454, 2.719104352080059, 2.9016141778145865, 2.6113326906446503, 2.544759261574067, 2.2412773187900257, 3.2990360494834023, 2.3718468890299818, 2.4128411579806652]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.3044132306887377, 3.8144766439489217, 3.945883193087127, 3.4472606171110556, 2.7675374972706663, 2.371101484809742, 3.4565862234649103, 2.4917660679104756, 2.431936549723673]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5531474577038327, 1.6265533323955619, 1.7259343692402804, 1.5317261690790556, 1.4439055988190146, 1.3681339509008044, 1.9767510450511203, 1.4272571393342428, 1.434031760309034]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6464180973870255, 2.234396089731143, 2.5224212530785004, 1.9343138187255593, 1.4814888548357932, 1.4044254277924808, 2.0858658772880716, 1.468401954432684, 1.4569580435233134]}}