{"id":6683,"date":"2020-11-17T13:35:09","date_gmt":"2020-11-17T12:35:09","guid":{"rendered":"https:\/\/www.hibernian-recruitment.com\/?p=6683"},"modified":"2023-08-22T11:57:09","modified_gmt":"2023-08-22T09:57:09","slug":"how-corona-changes-the-weather-forecast","status":"publish","type":"post","link":"https:\/\/www.hibernian-recruitment.com\/en\/how-corona-changes-the-weather-forecast\/","title":{"rendered":"How Corona changes the weather forecast"},"content":{"rendered":"\n

How Corona changes the weather forecast<\/strong><\/h2>\n\n\n\n

Aircrafts not\nonly transport people or freight. No – they are also an important source of information\nfor meteorologists. Aircrafts collect weather data during flights, for example\non temperature, wind speed or humidity, and send it to ground stations.<\/p>\n\n\n\n

In 1991 the\ninternational program AMDAR (Aircraft Meteorological Data Relay) was launched\nby the World Meteorological Organization.<\/p>\n\n\n\n

Since then, AMDAR\nhas collected 50,000 weather data sets in Europe every day. These are\nparticularly valuable because aircrafts collect the data from different\naltitudes. So-called vertical profiles can be created by measuring from\ntake-off to cruising altitude.<\/p>\n\n\n\n

“When it comes\nto the weather, there is a correlation between conditions at different\naltitudes,” explains Nikolas Zimmermann from the international weather\nservice UBIMET. “When you make weather forecasts, you work from top to\nbottom”. Therefore,\nvertical profiles can represent the instability of the atmosphere extremely\nwell.<\/p>\n\n\n\n

So how exactly\ndoes AMDAR work?<\/p>\n\n\n\n

The on-board\ntemperature, pressure and humidity sensors permanently record data. While still\nin the aircraft, this data is pre-processed and transmitted to the ground via short\nwave or satellite connection. Afterwards the collected data is subjected to a\nstrict quality control and then transmitted to the participating institutions.<\/p>\n\n\n\n

Due to the declining demand for air travel caused by the spread of the corona virus (SARS-CoV-2), many flights were cancelled. At Lufthansa, which collects the weather reports for the German weather forecast service, the flight schedule was cut by 95%. As a result, less than 20,000 weather reports per day were collected in March – a decrease of more than 60%.<\/p>\n\n\n\n

The extent to\nwhich the missing data will affect the quality of weather forecasts is\ndifficult to say. In an experiment conducted by the European Centre for\nMedium-Range Weather Forecasts (ECMWF), forecasts were made once with and once\nwithout the weather data from aircraft. The result: the quality of the weather\nforecasts decreased on average by 10%. But no need to worry. After all, ground\nmeasuring stations and satellites also provide the necessary information. In\naddition, weather balloons are used to compensate for this lack of data. The\nsatellite ‘Aeolus’, which was launched in 2018, will also be able to support\nthis. This satellite uses a new method to measure the wind conditions in the\natmosphere by using laser technologies.<\/p>\n\n\n\n

Nevertheless, the\nmissing data definitely has an impact on our lives. The lack of vertical\nprofiles makes it harder to predict low-pressure areas. For instance, a\nthunderstorm or rain shower can surprise us more often. Therefore, our tip for\nNovember: Better bring an umbrella!<\/p>\n\n\n\n

<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"

How Corona changes the weather forecast Aircrafts not only transport people or freight. No – they are also an important source of information for meteorologists. Aircrafts collect weather data during flights, for example on temperature, wind speed or humidity, and send it to ground stations. In 1991 the international program AMDAR (Aircraft Meteorological Data Relay) […]<\/p>\n","protected":false},"author":31,"featured_media":6684,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6683","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/posts\/6683","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/users\/31"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/comments?post=6683"}],"version-history":[{"count":2,"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/posts\/6683\/revisions"}],"predecessor-version":[{"id":9297,"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/posts\/6683\/revisions\/9297"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/media\/6684"}],"wp:attachment":[{"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/media?parent=6683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/categories?post=6683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hibernian-recruitment.com\/en\/wp-json\/wp\/v2\/tags?post=6683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}