{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:48.603087", "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-Aug-07_to_2020-Aug-14_36.5_2.0"}, "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": 2020080000310}, "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": "August 07 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 14 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 129459.45654198035}, "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": ["Ethiopia", "Kenya", "South Sudan"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "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": 2.0}, "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": 36.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[36.646, 3.25], [36.656, 3.226], [36.677, 3.177], [37.03, 3.03], [37.25, 2.5], [37.146, 2.25], [37.25, 2.0], [37.146, 1.75], [37.25, 1.5], [37.03, 0.97], [36.677, 0.823], [36.53, 0.47], [36.0, 0.25], [35.47, 0.47], [35.25, 1.0], [35.354, 1.25], [35.25, 1.5], [35.354, 1.75], [35.323, 1.823], [35.25, 1.854], [35.249, 1.854], [35.0, 1.75], [34.47, 1.97], [34.25, 2.5], [34.354, 2.749], [34.354, 2.75], [34.323, 2.823], [33.97, 2.97], [33.75, 3.5], [33.854, 3.75], [33.75, 4.0], [33.854, 4.25], [33.75, 4.5], [33.854, 4.75], [33.75, 5.0], [33.97, 5.53], [34.323, 5.677], [34.47, 6.03], [34.823, 6.177], [34.97, 6.53], [35.323, 6.677], [35.47, 7.03], [36.0, 7.25], [36.53, 7.03], [36.698, 6.625], [37.0, 6.75], [37.53, 6.53], [37.677, 6.177], [38.03, 6.03], [38.25, 5.5], [38.03, 4.97], [37.677, 4.823], [37.53, 4.47], [37.177, 4.323], [37.146, 4.25], [37.25, 4.0], [37.03, 3.47], [36.677, 3.323], [36.646, 3.251], [36.646, 3.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[33.85355339059328, 3.75], [33.75, 4.0], [33.85355339059328, 4.25], [33.75, 4.5], [33.85355339059328, 4.75], [33.75, 5.0], [33.96966991411009, 5.5303300858899105], [34.32322330470336, 5.6767766952966365], [34.46966991411009, 6.0303300858899105], [34.82322330470336, 6.1767766952966365], [34.96966991411009, 6.5303300858899105], [35.32322330470336, 6.6767766952966365], [35.46966991411009, 7.0303300858899105], [36.0, 7.25], [36.53033008588991, 7.0303300858899105], [36.69822330470336, 6.624999999999999], [37.0, 6.75], [37.53033008588991, 6.5303300858899105], [37.67677669529664, 6.1767766952966365], [38.03033008588991, 6.0303300858899105], [38.25, 5.5], [38.03033008588991, 4.9696699141100895], [37.67677669529664, 4.8232233047033635], [37.53033008588991, 4.4696699141100895], [37.17677669529664, 4.3232233047033635], [37.14644660940672, 4.25], [37.25, 4.0], [37.03033008588991, 3.4696699141100895], [36.67677669529664, 3.323223304703363], [36.64644660940672, 3.25], [36.67677669529664, 3.176776695296637], [37.03033008588991, 3.0303300858899105], [37.25, 2.5], [37.14644660940672, 2.25], [37.25, 2.0], [37.14644660940672, 1.75], [37.25, 1.5], [37.03033008588991, 0.9696699141100894], [36.67677669529664, 0.8232233047033631], [36.53033008588991, 0.4696699141100894], [36.0, 0.25], [35.46966991411009, 0.4696699141100893], [35.25, 1.0], [35.35355339059328, 1.25], [35.25, 1.5], [35.35355339059328, 1.75], [35.32322330470336, 1.823223304703363], [35.25, 1.8535533905932744], [35.0, 1.75], [34.46966991411009, 1.9696699141100893], [34.25, 2.5], [34.35355339059328, 2.75], [34.32322330470336, 2.823223304703363], [33.96966991411009, 2.9696699141100895], [33.75, 3.5], [33.85355339059328, 3.75]]]}, "2020-08-08T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[33.85355339059328, 3.75], [33.75, 4.0], [33.85355339059328, 4.25], [33.75, 4.5], [33.85355339059328, 4.75], [33.75, 5.0], [33.96966991411009, 5.5303300858899105], [34.32322330470336, 5.6767766952966365], [34.46966991411009, 6.0303300858899105], [34.82322330470336, 6.1767766952966365], [34.96966991411009, 6.5303300858899105], [35.32322330470336, 6.6767766952966365], [35.46966991411009, 7.0303300858899105], [36.0, 7.25], [36.53033008588991, 7.0303300858899105], [36.69822330470336, 6.624999999999999], [37.0, 6.75], [37.53033008588991, 6.5303300858899105], [37.67677669529664, 6.1767766952966365], [38.03033008588991, 6.0303300858899105], [38.25, 5.5], [38.03033008588991, 4.9696699141100895], [37.67677669529664, 4.8232233047033635], [37.53033008588991, 4.4696699141100895], [37.17677669529664, 4.3232233047033635], [37.14644660940672, 4.25], [37.25, 4.0], [37.03033008588991, 3.4696699141100895], [36.67677669529664, 3.323223304703363], [36.64644660940672, 3.25], [36.67677669529664, 3.176776695296637], [37.03033008588991, 3.0303300858899105], [37.25, 2.5], [37.14644660940672, 2.25], [37.25, 2.0], [37.14644660940672, 1.75], [37.25, 1.5], [37.03033008588991, 0.9696699141100894], [36.67677669529664, 0.8232233047033631], [36.53033008588991, 0.4696699141100894], [36.0, 0.25], [35.46966991411009, 0.4696699141100893], [35.25, 1.0], [35.35355339059328, 1.25], [35.25, 1.5], [35.35355339059328, 1.75], [35.32322330470336, 1.823223304703363], [35.25, 1.8535533905932744], [35.0, 1.75], [34.46966991411009, 1.9696699141100893], [34.25, 2.5], [34.35355339059328, 2.75], [34.32322330470336, 2.823223304703363], [33.96966991411009, 2.9696699141100895], [33.75, 3.5], [33.85355339059328, 3.75]]]}, "2020-08-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[33.85355339059328, 3.75], [33.75, 4.0], [33.85355339059328, 4.25], [33.75, 4.5], [33.85355339059328, 4.75], [33.75, 5.0], [33.96966991411009, 5.5303300858899105], [34.32322330470336, 5.6767766952966365], [34.46966991411009, 6.0303300858899105], [34.82322330470336, 6.1767766952966365], [34.96966991411009, 6.5303300858899105], [35.32322330470336, 6.6767766952966365], [35.46966991411009, 7.0303300858899105], [36.0, 7.25], [36.53033008588991, 7.0303300858899105], [36.69822330470336, 6.624999999999999], [37.0, 6.75], [37.53033008588991, 6.5303300858899105], [37.67677669529664, 6.1767766952966365], [38.03033008588991, 6.0303300858899105], [38.25, 5.5], [38.03033008588991, 4.9696699141100895], [37.67677669529664, 4.8232233047033635], [37.53033008588991, 4.4696699141100895], [37.17677669529664, 4.3232233047033635], [37.14644660940672, 4.25], [37.25, 4.0], [37.03033008588991, 3.4696699141100895], [36.67677669529664, 3.323223304703363], [36.64644660940672, 3.25], [36.67677669529664, 3.176776695296637], [37.03033008588991, 3.0303300858899105], [37.25, 2.5], [37.14644660940672, 2.25], [37.25, 2.0], [37.14644660940672, 1.75], [37.25, 1.5], [37.03033008588991, 0.9696699141100894], [36.67677669529664, 0.8232233047033631], [36.53033008588991, 0.4696699141100894], [36.0, 0.25], [35.46966991411009, 0.4696699141100893], [35.25, 1.0], [35.35355339059328, 1.25], [35.25, 1.5], [35.35355339059328, 1.75], [35.32322330470336, 1.823223304703363], [35.25, 1.8535533905932744], [35.0, 1.75], [34.46966991411009, 1.9696699141100893], [34.25, 2.5], [34.35355339059328, 2.75], [34.32322330470336, 2.823223304703363], [33.96966991411009, 2.9696699141100895], [33.75, 3.5], [33.85355339059328, 3.75]]]}, "2020-08-10T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[33.85355339059328, 3.75], [33.75, 4.0], [33.85355339059328, 4.25], [33.75, 4.5], [33.96966991411009, 5.0303300858899105], [34.32322330470336, 5.1767766952966365], [34.46966991411009, 5.5303300858899105], [34.82322330470336, 5.6767766952966365], [34.96966991411009, 6.0303300858899105], [35.32322330470336, 6.1767766952966365], [35.46966991411009, 6.5303300858899105], [36.0, 6.75], [36.53033008588991, 6.5303300858899105], [36.75, 6.0], [36.64644660940672, 5.75], [36.67677669529664, 5.6767766952966365], [37.03033008588991, 5.5303300858899105], [37.25, 5.0], [37.14644660940672, 4.75], [37.25, 4.5], [37.14644660940672, 4.25], [37.25, 4.0], [37.03033008588991, 3.4696699141100895], [36.625, 3.3017766952966365], [36.67677669529664, 3.176776695296637], [37.03033008588991, 3.0303300858899105], [37.25, 2.5], [37.14644660940672, 2.25], [37.25, 2.0], [37.14644660940672, 1.75], [37.25, 1.5], [37.03033008588991, 0.9696699141100894], [36.5, 0.75], [36.25, 0.8535533905932743], [36.0, 0.75], [35.46966991411009, 0.9696699141100893], [35.25, 1.5], [35.35355339059328, 1.75], [35.32322330470336, 1.823223304703363], [34.96966991411009, 1.9696699141100893], [34.82322330470336, 2.323223304703363], [34.46966991411009, 2.4696699141100895], [34.32322330470336, 2.823223304703363], [33.96966991411009, 2.9696699141100895], [33.75, 3.5], [33.85355339059328, 3.75]]]}, "2020-08-11T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[34.82322330470336, 3.823223304703363], [34.46966991411009, 3.9696699141100895], [34.25, 4.5], [34.46966991411009, 5.0303300858899105], [35.0, 5.25], [35.25, 5.146446609406726], [35.5, 5.25], [36.03033008588991, 5.0303300858899105], [36.25, 4.5], [36.14644660940672, 4.25], [36.25, 4.0], [36.14644660940672, 3.75], [36.17677669529664, 3.676776695296637], [36.53033008588991, 3.5303300858899105], [36.75, 3.0], [36.625, 2.6982233047033635], [37.03033008588991, 2.5303300858899105], [37.25, 2.0], [37.03033008588991, 1.4696699141100895], [36.5, 1.25], [35.96966991411009, 1.4696699141100893], [35.75, 2.0], [35.875, 2.3017766952966365], [35.46966991411009, 2.4696699141100895], [35.32322330470336, 2.823223304703363], [34.96966991411009, 2.9696699141100895], [34.75, 3.5], [34.85355339059328, 3.75], [34.82322330470336, 3.823223304703363]]]}, "2020-08-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[34.82322330470336, 3.823223304703363], [34.46966991411009, 3.9696699141100895], [34.25, 4.5], [34.46966991411009, 5.0303300858899105], [35.0, 5.25], [35.25, 5.146446609406726], [35.5, 5.25], [36.03033008588991, 5.0303300858899105], [36.25, 4.5], [36.14644660940672, 4.25], [36.25, 4.0], [36.14644660940672, 3.75], [36.17677669529664, 3.676776695296637], [36.53033008588991, 3.5303300858899105], [36.75, 3.0], [36.625, 2.6982233047033635], [37.03033008588991, 2.5303300858899105], [37.25, 2.0], [37.03033008588991, 1.4696699141100895], [36.5, 1.25], [35.96966991411009, 1.4696699141100893], [35.75, 2.0], [35.875, 2.3017766952966365], [35.46966991411009, 2.4696699141100895], [35.32322330470336, 2.823223304703363], [34.96966991411009, 2.9696699141100895], [34.75, 3.5], [34.85355339059328, 3.75], [34.82322330470336, 3.823223304703363]]]}, "2020-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.03033008588991, 1.4696699141100895], [36.5, 1.25], [35.96966991411009, 1.4696699141100893], [35.75, 2.0], [35.96966991411009, 2.5303300858899105], [36.5, 2.75], [37.03033008588991, 2.5303300858899105], [37.25, 2.0], [37.03033008588991, 1.4696699141100895]]], [[[34.75, 4.0], [34.85355339059328, 4.25], [34.75, 4.5], [34.96966991411009, 5.0303300858899105], [35.5, 5.25], [36.03033008588991, 5.0303300858899105], [36.25, 4.5], [36.14644660940672, 4.25], [36.25, 4.0], [36.14644660940672, 3.75], [36.25, 3.5], [36.03033008588991, 2.9696699141100895], [35.5, 2.75], [34.96966991411009, 2.9696699141100895], [34.75, 3.5], [34.85355339059328, 3.75], [34.75, 4.0]]]]}, "2020-08-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[35.75, 2.0], [35.96966991411009, 2.5303300858899105], [36.5, 2.75], [37.03033008588991, 2.5303300858899105], [37.25, 2.0], [37.03033008588991, 1.4696699141100895], [36.5, 1.25], [35.96966991411009, 1.4696699141100893], [35.75, 2.0]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.5293205146857645}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.989637359158318}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.919687891292938, 24.34356804739849, 22.982638063943796, 25.17082225459086, 26.672954496050295, 25.861517414978266, 25.790676464596743, 25.953915053271714]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.32098384181137, 18.49501112827903, 18.101896658228895, 22.065262498395157, 25.954660529510818, 24.850527388809496, 25.460989597884293, 25.953915053271714]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9491355585228867, -2.5522772113934673, -3.9224690509696503, -2.694548606730156, -1.9302298561206708, -2.753781027134503, -2.4509915993304645, -2.3646480059910573]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.279958931479769, -4.246158750425934, -5.5293205146857645, -3.689364783033909, -2.3078515231089227, -3.3702332318252957, -2.81137247377535, -2.3646480059910573]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.236492015581079, -1.9243559095457623, -2.964502419421423, -2.042731278181036, -1.5090331954494118, -2.17478707666009, -1.9591775716454765, -1.8970980782355356]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.9019374452159052, -2.7318437593756526, -4.368354850483747, -2.9626668821360695, -1.6846195333940412, -2.574649260291243, -2.2030958543001384, -1.8970980782355356]}}