Nemesi
  • Member for 4 years, 9 months
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  • Boston, MA
Is there a recent global gridded temperature dataset with 0.1 deg resolution?
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15 votes

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-...

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Determining if a fine resolution lat/lon point lies in a coarse resolution lat/lon grid box?
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5 votes

Note: I'm assuming that the original data are provided in NetCDF format. There are two (OK, there are more, but I'll focus on these two) relatively quick ways to deal with this issue. Which one to ...

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Correct way to spin-up for sensitivity analysis in a Global Chemical Transport Models
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2 votes

welcome to ES. I'm not experienced in Chemical Transport Model, so my reply will be more on "general terms" and I'd be more than happy to see more specific answers. That being told, in my ...

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What method do I use to derive the organic material content (as a percentage) per layer in SoilGrids
1 votes

If you are not in the position of following the steps suggested in Ash's answer, I'd suggest you to rely on existing data, as the ISRIC dataset "WISE derived soil properties on a 30 by 30 arc-...

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How to interpret the negative (actual) evapotranspiration values?
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5 votes

Negative values for the ET, both potential and actual, usually refer to condensation. See also "ERA5 mean evaporation rates data - Why is that negative?" Regarding the ability of the ...

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Resource for scientific maps?
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3 votes

I usually refer to two free of charge sources for administrative division maps: for Europe, as in your case (I hope they still hold the maps of UK even after Brexit...) you can use the official NUTS -...

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What data of agricultural yield to use for India?
4 votes

In case you cannot access official local data, I recommend the use of the IFPRI resource MapSPAM2010. Quoting the description of the dataset: Using a variety of inputs, IFPRI's Spatial Production ...

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Historical data on world's forest area
6 votes

When I need data about past and future projected land use change, I usually refer to the global dataset that was developed for the global climate simulations CMIP6. The dataset is the Land Use ...

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download NASA Earth Exchange Global Daily Downscaled Projections for single lat lon
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1 votes

I did download and process some of the NEX files a year or so ago. Maybe there is a more efficient way to do that now, but what I used is this R script to download the files: library(RCurl) opts = ...

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Creating a drought metric using precipitation data?
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2 votes

One of the most widely used index to quantify the drought events is the standardized precipitation index (SPI) and it is actually based on precipitation time series only. The index is used, among ...

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High-resolution georeferenced population data
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7 votes

For "historical" population data, you can refer to the Gridded Population of the World (GPW), version 4. This dataset makes available estimates of population at ~1 km resolution (30 arc second) for ...

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How can I convert the negative values of the ERA5 PET data into positive?
2 votes

You can multiply all the values by -1 cdo mulc,-1 infile.nc outfile.nc If you want also to get rid of the condensation data (and, please, note that I am not implying that that is the right thing to ...

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downloading ERA5 netCDF daily data for a decade, how to restrict location to reduce data size?
2 votes

There are two ways to get this done: 1- you can select the specific domain of interest when downloading the files. This is highly preferred when you have to download a large number of variables and ...

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ERA5 mean evaporation rates data - Why is that negative?
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6 votes

Just leaving this for future readers. I finally found in some ECMWF documentation (referring to a different variable) that: "The ECMWF Integrated Forecasting System convention is that downward fluxes ...

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How is it possible to use up the water in a region?
16 votes

This is a really complex problem and would require a really detailed explanation about atmospheric circulation, meteorology and hydrology. The short answer to your question is that water is going ...

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where to download NASA-NEX daily downscaled datasets?
0 votes

Besides the Google Earth application suggested by shahryar I'm not aware of an online tool that could do the job you are looking for. What I would do is to download the files and operate with a NCO ...

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In general, does the presence of vegetation increase/decrease gross water loss (evapotranspiration) compared to barren land (evaporation only)?
3 votes

In addition to what has been (correctly) written in the other answers, I would like to add a couple of figures that could help to understand the dynamics involved: The first figure is borrowed from ...

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