### Instruction:

Extract the cause and effect entities from the following sentence:
Radiance-based validation offers a useful alternative to validation with in situ LST as it does not require in-situ measurements concurrent with the satellite overpass [RD-67]

### Assistant:

VARIABLE: it
CONDITION: require in-situ measurements concurrent with the satellite overpass
EFFECT_1: Radiance-based validation offers a useful alternative to validation with in situ LST
KEYWORD: as
NEGATION: does not
NOT_RELEVANT: [RD-67]
CAUSE_1: it does not require in-situ measurements concurrent with the satellite overpass

