Function fetchGFSAtmos

fetchGFSAtmos(
    source: string,
    product: Grib2AtmosGFSProduct,
    year: string,
    month: string,
    day: string,
    hour: "12" | "18" | "00" | "06",
    forecast?: string,
    filters?: string[],
): Promise<GRIB2Reader>
Fetch ATMOS GFS data.

You can find some data to reference what's available here.

An example of what variable data means can be found here.
Parameters
- source: string
  The source of the data, aws | ftpprd | nomads | google | azure | or a user provided url
- product: Grib2AtmosGFSProduct
  which product to fetch
- year: string
  The year to fetch given a 4 digit year
- month: string
  The month to fetch given a 2 digit month 01 is January and 12 is December
- day: string
  The day to fetch given a 2 digit day, e.g. '01' or '31'
- hour: "12" | "18" | "00" | "06"
  The forecast hour with 2 digits often in increments of 6 up to 18, e.g. '00' or '12'
- forecast: string = '000'
  The forecast hour with 3 digits often in increments of 3 up to 384, e.g. '000' or '003'
- Optionalfilters: string[]
  The filters to apply by filtering lines in the .idx file
Returns Promise<GRIB2Reader>
- A GRIB2Reader of the specific sections