New inferences about cloud structure from POLDER3/PARASOL multiangular measurements in the Oxygen A band

We present here evidences that multidirectional measurements in the Oxygen A band from POLDER3 on PARASOL can help to characterize the vertical structure of cloudy atmospheres. For example in the case of monolayer clouds, POLDER cloud oxygen pressure p_oxy is sensitive to the cloud geometrical thickness H: the mean p_oxy appears close to the middle-of-the-cloud-layer pressure, and furthermore, its angular standard deviation is very much correlated with H. A climatology of this correlation is performed and studied. That passive measurements could provide such informations, compared with or completing other measurements, could interest a large range of applications where a better definition and account of cloud macrophysical parameters are important and useful.