The Basics of NASAPrecipitation.jl

There are two essential components in NASAPrecipitation.jl

• A NASA precipitation dataset of interest (i.e., a NASAPrecipitationDataset npd)

• A geographic region of interest (i.e., a GeoRegion geo)

With these two components, you can perform the following actions:

• Download data of interest using download(npd,geo)

• Perform basic analysis on the data using analysis(npd,geo)

• Manipulate the data (e.g., spatiotemporal smoothing using smooth(npd,geo,...))

The NASAPrecipitationDataset Type

All NASAPrecipitationDataset types (except for the Dummy types) contain the following information:

• start - The beginning of the date-range of our data of interest

• stop - The end of the date-range of our data of interest

• path - The data directory in which our dataset is saved into

NASAPrecipitation.NASAPrecipitationDataset Type

NASAPrecipitationDataset{ST<:AbstractString, DT<:TimeType}
    ID    :: ST
    name  :: ST
    doi   :: ST
    start :: DT
    stop  :: DT
    datapath :: ST
    maskpath :: ST
    hroot :: ST
    fpref :: ST
    fsuff :: ST
end

Abstract supertype for NASA Precipitation datasets on NASA OPeNDAP Servers.

Fields:

• ID : ID for the NASAPrecipitationDataset, used in determining containing folders and filenames of the NetCDF

• name : The name describing the NASAPrecipitationDataset, used mostly in Logging

• doi : The DOI identifier, to be saved into the NetCDF

• start : The start date (Y,M,D) of our download / analysis

• stop : The end date (Y,M,D) of our download / analysis

• datapath : The directory in which to save our downloads and analysis files to

• maskpath : The directory in which to save our corresponding landsea mask datasets

• hroot : The URL of the NASA's EOSDIS OPeNDAP server for which this dataset is stored

• fpref : The prefix component of the NetCDF files to be downloaded

• fsuff : The suffix component of the NetCDF files to be downloaded

Of these fields, only start, stop, datapath and maskpath are user-defined. All other fields are predetermined depending on the type of NASA Precipitation Dataset called.

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The AbstractGeoRegion Type

A GeoRegion defines the geometry/geometries of geograhical region(s) of interest. See the documentation of GeoRegions.jl for more information.

GeoRegions.AbstractGeoRegion Type

AbstractGeoRegion

Abstract supertype for geographical regions. All AbstractGeoRegion types contain the following fields:

• ID - A String Type, the identifier for the GeoRegion.

• pID - A String Type, the identifier for the parent GeoRegion.

• name - A String Type, the full name of the GeoRegion.

• path - A String Type, the path of the file containing information on this GeoRegion.

• N - A Float Type, contains the northernmost latitude bound.

• S - A Float Type, contains the southernmost latitude bound.

• E - A Float Type, contains the easternmost longitude bound.

• W - A Float Type, contains the westernmost longitude bound.

• θ - A Float Type, the rotation projection for the data in the GeoRegion

• geometry - A Geometry or Vector{Geometry} Type

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