Solar radiation enters the Earth's atmosphere with a portion being scattered by clouds and aerosols.

Processing, archiving and distributing Earth science data
at the NASA Langley Research Center

SAM II Data and Information

SAM II Data and Information

Data obtained from the Stratospheric Aerosol Measurement (SAM) II instrument, which flew on board the Nimbus-7 satellite, are used to determine the vertical distribution of stratospheric aerosols in the polar regions of both hemispheres.

Project Title: 
SAM II
Discipline: 
Level: 
L2
Platform: 
NIMBUS-7
Instrument: 
Sun Photometer
Spatial Coverage: 

Polar Regions (Varies with season)

Spatial Resolution: 

The altitude profiles of aerosol extinction have a 1 km vertical resolution.

Temporal Coverage: 

10/29/1978 - 12/18/1993

Temporal Resolution: 

There are approximately 28 SAM II measurements per day, 98 per week, and 5096 per year. The time between each successive sunrise or sunset is approximately 1 hour and 45 minutes.

ASDC Order Tool: Order Data

DOI: 

10.5067/NIMBUS7/SAMII/SOLAR_ASCII_L2-AV
(see below for Data Citation information)

Aerosols

Search and Order: ASDC Order Tool

Read Software Files
Readme Files

Project Documentation

Guide Documents
To cite the data in publications:
SAM II Science Team (1999), SAM II Level 2 Data, Hampton, VA, USA: NASA Atmospheric Science Data Center (ASDC), Accessed <author citing data inserts date here> at doi: 10.5067/NIMBUS7/SAMII/SOLAR_ASCII_L2-AV