DB-All.e

DB-All.e is a fast on-disk database where meteorological observed and
forecast data can be stored, searched, retrieved and updated.

This framework allows to manage large amounts of data using its simple
Application Program Interface, and provides tools to visualise, import and
export in the standard formats BUFR, and crex.

The main characteristics of DB-ALL.e are:

— FORTRAN, C, C + + and Python APIs are provided.

— To make computation easier, data is stored as physical quantities, that
is, as measures of a variable in a specific point of space and time,
rather than as a sequence of report.

— Internal representation is similar to BUFR and crex WMO standard (table
Code driven) and utility for import and export are included (generic and
ECMWF template).

— Representation is in 7 dimensions: Latitude and geographic longitude
coordinates, table driven vertical coordinates, reference time, table
driven observation and forecast specification, table driven data type.

— It allows to store extra information linked to the data, such as
confidence intervals for quality control.

— It allows to store extra information linked to the stations.

— Variables can be represented as real, integer and characters, with
appropriate precision for the type of measured value.

— It is based on physical principles, that is, the data it contains are
defined in terms of homogeneous and consistent physical data. For example,
it is impossible for two incompatible values to exist in the same point in
space and time.

— It can manage fixed stations and moving stations such as airplanes or
ships.

— It can manage both observational and forecast data.

— It can manage data along all three dimensions in space, such as data
from soundings and airplanes.

— Report information is preserved. It can work based on physical
parameters or on report types.

— It is temporary, to be used for a limited time and then be deleted.

— Does not need backup, since it only contains replicated or derived data.

— Written access is enabled for its users.