Examples of seachString

[blaylockbk]

From an email

Can you point me to a place that has the variable search strings I'd need to retrieve data? For example, if I want surface wind speed from the GFS, what exactly does that look like? I found this example: H = Herbie("2022-09-13", model="hrrr", product="sfc"), but what if I want something other than sfc data from the HRRR? And how do I get temperature out of the H object?

[blaylockbk]

Essentially, the searchString argument defines a regex search string done on the GRIB2 inventory file to find where the variables you want are located in the file.
Look at this page for more examples of what to set "searchString" to
🪂 Subset with searchString

For U and V winds at 10 m, you can set

searchString=":(?:U|V)GRD:10 m above ground"

Here's an example with GFS

from herbie import Herbie
H = Herbie('2022-01-01', model='gfs')

To show the inventory file as a dataframe, you can do

H.read_idx()

this produces a dataframe for each of the rows in the index file

In fact, you can use that command to try out different search strings until you get what you want

H.read_idx(searchString=":(?:U|V)GRD:10 m above ground")

This filters the dataframe to show only the rows containing 10 m winds

When your search string finds the variables you want, you can read the data with xarray like this...

ds = H.xarray(searchString=":(?:U|V)GRD:10 m above ground")
ds

produces the xarray dataset

For temperature, you can do this

ds = H.xarray(searchString=":TMP:2 m above ground")
ds.t2m

which gives you the xarray dataAarray of temperature