# ECA_MSI_CM__2A

## Variables

The table below lists the variables that are present in the HARP product that results from an ingestion of `ECA_MSI_CM__2A` data.

field name | type | dimensions | unit | description
--- | --- | --- | --- | ---
datetime | double | {time} | [seconds since 2000-01-01] | UTC time
latitude | double | {time} | [degree_north] | Geodetic latitude
longitude | double | {time} | [degree_east] | Geodetic longitude
latitude_bounds | double | {time, 4} | [degree_north] | latitudes of the ground pixel corners (WGS84)
longitude_bounds | double | {time, 4} | [degree_east] | longitudes of the ground pixel corners (WGS84)
orbit_index | int32 |  |  | absolute orbit number
cloud_type | int8 | {time} |  | cloud type; enumeration values: clear (0), cumulus (1), altocumulus (2), cirrus (3), stratocumulus (4), altostratus (5), cirrostratus (6), stratus (7), nimbostratus (8), deep_convection (9)
cloud_type_validity | int8 | {time} |  | cloud type quality status
cloud_phase_type | int8 | {time} |  | cloud phase; enumeration values: water (0), ice (1), supercooled (2), overlap (3)
cloud_phase_type_validity | int8 | {time} |  | cloud phase quality status
scene_type | int8 | {time} |  | cloud mask; enumeration values: confident_clear (0), probably_clear (1), probably_cloudy (2), confident_cloudy (3)
scene_type_validity | int8 | {time} |  | cloud mask quality status
validity | int8 | {time} |  | quality status
index | int32 | {time} |  | zero-based index of the sample within the source product

## Mapping description

The table below details where and how each variable was retrieved from the input product.

field name | mapping description
--- | ---
datetime | path | /ScienceData/time
description | time is replicated in the across track dimension
latitude | path | /ScienceData/latitude
longitude | path | /ScienceData/longitude
latitude_bounds | description | interpolated from the center coordinates for each of the ground pixels
longitude_bounds | description | interpolated from the center coordinates for each of the ground pixels
orbit_index | path | /HeaderData/VariableProductHeader/MainProductHeader/orbitNumber
cloud_type | path | /ScienceData/cloud_type
cloud_type_validity | path | /ScienceData/cloud_type_quality_status
cloud_phase_type | path | /ScienceData/cloud_phase
cloud_phase_type_validity | path | /ScienceData/cloud_phase_quality_status
scene_type | path | /ScienceData/cloud_mask
scene_type_validity | path | /ScienceData/cloud_mask_quality_status
validity | path | /ScienceData/quality_status