Health
- Covid-19: Covid-19 Decay Index
- Pollen concentrations: Pollen concentrations | Pollen Warning
Covid-19 Decay Index
These indices indicate the time that has to pass until a certain percentage of the present COVID-19 concentration decays. Recent investigations showed that the decay of COVID-19 was enhanced by either increased humidity or temperature (Biryukov et al., 2020). Additionally, there is also a dependence on sunlight, which has an impact on the potential for aerosol transmission of COVID-19 (Schuit et al., 2020). The indices are based on the numbers of the SARS-CoV-2 Airborne Calculator published by Homeland Security.
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Half-life of the virus outdoors in minutes:
covid_half_life:min
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Time in minutes until 90% of the virus died:
covid_decay_90:min
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Time in minutes until 99% of the virus died:
covid_decay_99:min
Examples:
The chart below shows the 90 % decay time of COVID-19 for North America, where the influece of heat in the south-western United States on the virus' lifetime can be seen:
Below is a time series that shows the 90 % and 99 % decay times of COVID-19 as well as the half life time for Zurich:
Current Situation:
https://api.meteomatics.com/2024-12-03T00:00:00ZP15D:PT1H/covid_half_life:min,covid_decay_90:min,covid_decay_99:min/47.36882,8.5374/html
References
- Biryukov J, Boydston JA, Dunning RA, Yeager JJ, Wood S, Reese AL, Ferris A, Miller D, Weaver W, Zeitouni NE, Phillips A, Freeburger D, Hooper I, Ratnesar-Shumate S, Yolitz J, Krause M, Williams G, Dawson DG, Herzog A, Dabisch P, Wahl V, Hevey MC, Altamura LA. 2020. Increasing temperature and relative humidity accelerates inactivation of SARS-CoV2 on surfaces. mSphere 5:e00441-20. https://journals.asm.org/doi/10.1128/mSphere.00441-20
- Michael Schuit, Shanna Ratnesar-Shumate, Jason Yolitz, Gregory Williams, Wade Weaver, Brian Green, David Miller, Melissa Krause, Katie Beck, Stewart Wood, Brian Holland, Jordan Bohannon, Denise Freeburger, Idris Hooper, Jennifer Biryukov, Louis A Altamura, Victoria Wahl, Michael Hevey, Paul Dabisch, Airborne SARS-CoV-2 Is Rapidly Inactivated by Simulated Sunlight, The Journal of Infectious Diseases, Volume 222, Issue 4, 15 August 2020, Pages 564–571, https://academic.oup.com/jid/article/222/4/564/5856149
- https://www.dhs.gov/science-and-technology/sars-airborne-calculator
Pollen Concentrations
Pollen concentrations are available in grains per cubic meter.
birch_pollen:grainsm3
grass_pollen:grainsm3
olive_pollen:grainsm3
ragweed_pollen:grainsm3
pollen:grainsm3
gives the total pollen concentration in grains per cubic meter.
Examples:
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The grass pollen concentration in July 2019 in Florence, Italy:
Current situation:
https://api.meteomatics.com/2024-12-03T00Z--2024-12-06T00Z:PT1H/grass_pollen:grainsm3/43.7800148,11.2059487/html -
Part of the output as CSV:
validdate;grass_pollen:grainsm3 2019-07-20T00:00:00Z;8.0 2019-07-20T01:00:00Z;7.3 2019-07-20T02:00:00Z;6.2 2019-07-20T03:00:00Z;5.9 2019-07-20T04:00:00Z;5.3 2019-07-20T05:00:00Z;7.6 2019-07-20T06:00:00Z;16.3 2019-07-20T07:00:00Z;12.6 2019-07-20T08:00:00Z;11.1 2019-07-20T09:00:00Z;8.9 2019-07-20T10:00:00Z;7.6 2019-07-20T11:00:00Z;7.0 2019-07-20T12:00:00Z;7.3 2019-07-20T13:00:00Z;8.1 2019-07-20T14:00:00Z;9.5
Pollen Warning
The pollen warning returns warning levels for different types of pollen loads according to the DWD.
<type>_pollen_warning:idx
Available types of pollen: hazel, alder, ash, birch, grass, rye, mugwort, ragweed, max
(maximum pollen load)
Warning | Description |
0 | No pollen load |
0.5 | No or small pollen load |
1 | Small pollen load |
1.5 | Small or moderate pollen load |
2 | Moderate pollen load |
2.5 | Moderate or high pollen load |
3 | High pollen load |
Examples:
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Grass pollen load in spring 2021:
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Current situation:
https://api.meteomatics.com/2024-12-03T12ZP1D:PT1H/grass_pollen_warning:idx/51.23693,10.13906/html