Variable naming for different versions of SMOS
====================================================
 
This is a full list of all available variables in each image. These parameters
can be passed to the repurpose routine to create time series.

* L3 SMOS IC

+--------------------------+------------------------------------------------------+-----------------------+
| Parameter                | Long Name                                            | Units                 |
+==========================+======================================================+=======================+
| Days                     | Number of Days since 1/1/2000                        |                       |
+--------------------------+------------------------------------------------------+-----------------------+
| Processing_Flags         | Processing Flags                                     |                       |
+--------------------------+------------------------------------------------------+-----------------------+
| Quality_Flag             | 0: data OK, 1: data not recommended, 2: missing data |                       |
+--------------------------+------------------------------------------------------+-----------------------+
| RMSE                     | RMSE TBmeas. TB modeled                              |                       |
+--------------------------+------------------------------------------------------+-----------------------+
| Scene_Flags              | Scene Flags                                          |                       |
+--------------------------+------------------------------------------------------+-----------------------+
| Soil_Moisture            | Soil Moisture                                        | m :sup:`3` m :sup:`-3`|
+--------------------------+------------------------------------------------------+-----------------------+
| Soil_Moisture_StdError   | Soil Moisture standard error                         | m :sup:`3` m :sup:`-3`|
+--------------------------+------------------------------------------------------+-----------------------+
| Soil_Temperature_Level1  | ECMWF Soil Temperature at surface level 1            | Kelvin                |
+--------------------------+------------------------------------------------------+-----------------------+
| UTC_Microseconds         | Microseconds                                         | micros.               |
+--------------------------+------------------------------------------------------+-----------------------+
| UTC_Seconds              | Number of Seconds                                    | s                     |
+--------------------------+------------------------------------------------------+-----------------------+

* L4 SMOS RZSM SM_SCIE_MIR_CLF4RD

+--------------------------+------------------------------------------------------+-----------------------+
| Parameter                | Long Name                                            | Units                 |
+==========================+======================================================+=======================+
| QUAL                     | Quality index 1.0 highest quality                    |                       |
+--------------------------+------------------------------------------------------+-----------------------+
| RZSM                     | Root Zone Soil Moisture                              | m3/m3                 |
+--------------------------+------------------------------------------------------+-----------------------+

* L4 SMOS RZSM SM_OPER_MIR_CLF4RD

+--------------------------+------------------------------------------------------+-----------------------+
| Parameter                | Long Name                                            | Units                 |
+==========================+======================================================+=======================+
| Quality                  | -1: missing data, 0: data not recommended, 1: data OK|                       |
+--------------------------+------------------------------------------------------+-----------------------+
| RZSM                     | Retrieved Root Zone Soil Moisture                    | m3/m3                 |
+--------------------------+------------------------------------------------------+-----------------------+