BEAT-II Record: GOME_FDS_L4
Fields
The table below gives an overview of possible fields that can be returned from an ingestion of GOME_FDS_L4 data. The 'default' column indicates whether the specified data item is included in the ingestion by default or not. You can change which data items are ingested by making use of the include and exclude filter options (see below).
| field name | type | dimensions | default | description |
|---|---|---|---|---|
type | string | included | reference to the type of data in this record | |
time | double | [main] | included | The time of the ozone field (in seconds since 2000-01-01 00:00:00) |
grid_latitude | double | [latitude] | included | Mid-point latitude values for the grid cells |
grid_longitude | double | [longitude] | included | Mid-point longitude values for the grid cells |
o3_column_grid | double | [main, latitude, longitude] | included | Ozone field |
o3_column_grid_unit | string | included | DU |
Ingestion filter options
Ingestion filter options are passed as a ',' or ';' separated string to the ingestion function. Each filter option needs to be formulated as option_name=value[ value value] (some options accept more than one value). For example, if a product has filter options 'altitude_min' and 'time_min' you can provide a filter option string "latitude_min=30,time_min=2003-01-01" to get all measurements at or above 30km and on or after January 1st 2003.
| option name | type | description |
|---|---|---|
product_version | integer | If multiple product format versions for this product type exist, you can use this filter option to select from which ones data should be ingested (i.e. you can provide a space-separated list of allowed product format version numbers). The list of available version numbers for this product type can be found in the CODA Product Format Definitions documentation. |
include | string | Provide a space-separated list of field names to ingest additional data items (i.e. fields that are not ingested by default). You can use the special case include=* to indicate that you want to ingest all available data items. |
exclude | string | Provide a space-separated list of field names that you don't want ingested. Mind that the exclude filter is processed after the include filter. |
time_min | time* | Only include elements for which the value is greater than or equal to the provided filter option value |
time_max | time* | Only include elements for which the value is less than or equal to the provided filter option value |
time | time* | Only include elements that match the list of given filter option values |
* Time values can be passed as either 'yyyy-mm-dd', 'yyyy-mm-ddThh:mm:ss', 'yyyy-mm-ddThh:mm:ss.uuuuuu' or a floating point value indicating the amount of seconds since 2000-01-01 00:00:00.
Mapping description
Below a description is provided on how each data item in the ingested record was retrieved from the product.
| field name | mapping description | |
|---|---|---|
time |
path | /month, /day, /year |
| description | The date as constructed from the day, month, and year fields and using a time of day of 12:00 | |
grid_latitude |
description | A linear interpolation from -89.5 to 89.5 with a step size of 1 |
grid_longitude |
description | A linear interpolation from -179.375 to 179.375 with a step size of 1.25 |
o3_column_grid |
path | /data[]/col_xxx_xxx |
| description | Each product file contains one field. Each latitude row consists of the concatenation of the col_xxx_xxx fields. Values that are 0 are converted to NaN values | |
o3_column_grid_unit |
description | Will be set to "DU" |