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The most important reanalysis datasets covering until present time (I'm excluding the others that stop some years before present time) currently available are: ERA5 by ECWMF: 1979-present (soon 1950-present), temporal resolution of 1 hour and spatial resolution quarter degree (0.25 x 0.25); CRU by the UEA: 1900-present (some variables 1850-present), ...


7

...measured in mol/m² within the total or tropospheric column. Is it possible to deduce concentrations for a specific slice of the troposphere? Not really, since you have a crucial bit of information missing: the vertical distribution. Your alternatives are: Combine satellite data with a model to estimate near-surface NO₂. The model may be able to ...


3

Welcome to Earth Science SE! Given that the crisis is still ongoing, I doubt we know the full extent of the impact (forecasting the weather is hard enough, forecasting the impact of a pandemic is outside my expertise). But, at least one conference was supposed t o go to was cancelled. And I know the lack of airplane obs is impacting data assimilation. ...


3

tl;dr I would suggest using the Toolbox of the Copernicus CDS. Via the Toolbox, you can choose datasets, process them and download the processed results. You have to be registered and logged-in to use the Toolbox. How to find out how to select the dataset of interest Use the search of the CDS and go to the bottom of the page. There, you can click/tab Show ...


2

Unfortunately, what you want may not be actually available. It is standard to make measurements of snow every 24 hours. This is because it is well known that frequent observations of snowfall will exceed the total accumulated snowfall. The total accumulation of snow is not equal to the sum of the accumulated rate of the integral. That is, $$\Delta S \ne\int_{...


2

The ECMWF (European Centre for Medium-Range Weather Forecasts) has published an article about the topic on 24 March 2020: By 23 March there was a reduction of 65% in [European aircraft] reports received compared to 3 March. Globally the reduction was about 42%. [...] In 2019 a test was run: a series of forecasts without using aircraft reports (but ...


2

Is there a project that tracks and publishes data regarding weather prediction errors on a regular basis that would help with analyzing the correlation between incoming data and prediction error? The World Meteorological Organization has several initiatives that track forecast performance. See for example here. The data is a bit delayed, as of today (Apr 5, ...


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Model data seta can vary in several ways from a reference data set. Taylor diagrams visually compare multiple datasets output to a reference dataset (e.g., model experiments to observations). This is done by exploiting the geometric relationship between centered RMS, correlation, and standard deviation when computing differences between datasets. Several ...


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To download the data from earth data, the following needs to be done Go to https://urs.earthdata.nasa.gov/ and create an account. Note the username and password which will be used to download the data. In your linux root create a file .netrc and enter the following machine urs.earthdata.nasa.gov login your_login password your_password Go to https://disc....


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aWhere Inc. www.awhere.com provides daily min and max temperature, precip, solar, wind for the agricultural earth (basically 60S-60N) at a resolution of 5 arc min or about 9km at the equator (1/12 degree)


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