Minimize AATSR Geophysical product - full resolution (ATS_NR__2P)

The Level 2 full resolution geophysical product (ATS_NR__2P), also called the Gridded Surface Temperature (GST) Product, contains a single measurement data set the content of which is switchable, that is to say, the content of each pixel field will depend on the surface type. Specifically, the contents of the data fields will depend on the setting of the forward and nadir cloud flags and the land flag, as shown in the Table below.

 

Table 1 Switchable NR product contents

Surface Type

Nadir View Cloud Flag

Nadir Field Contains

Nadir Valid Flag Setting

Forward View Cloud Flag

Combined View Field Contains

Combined View Valid Flag Setting

Sea

Not Cloudy

Nadir-only SST

TRUE

Not Cloudy

Dual-view SST

TRUE

Cloudy

Dual-view SST
(Note 2)

FALSE

Cloudy

CTT
(Note 1)

TRUE

Not Cloudy

CTH
(Note 3)

FALSE

Cloudy

Land

Not Cloudy

LST

TRUE

Not Cloudy

NDVI

TRUE

Cloudy

Cloudy

Not Cloudy

Cloudy

 

Note 1: Cloud Top Temperature is not implemented in the AATSR retrieval; the field is a placeholder and is filled with the nadir 11 micron Brightness Temperature

Note 2: Combined view will contain the nadir 11 micron Brightness Temperature if the forward view data was flagged as not valid

Note 3: Cloud Top Height is not implemented in the AATSR retrieval; the field is a placeholder and will be empty

The principal annotation data sets from the Level 1B product from which it is derived are also included in this product.

 

Further details on the Level 2 NR products are available in the AATSR Handbook.