ASDC | CAL_LID_L3_APro_AllSky-Standard-V3-10

CALIPSO Level 3

Entry Title: CAL_LID_L3_APro_AllSky-Standard-V3-10

Entry ID: CAL_LID_L3_APro_AllSky-Standard-V3-10

Aerosols

Description

CAL_LID_L3_APro_AllSky-Standard-V3-01 data are CALIPSO Lidar Level 3 aerosol profile all-sky standard data.

The CALIPSO lidar level 3 aerosol data product reports monthly mean profiles of aerosol optical properties on a uniform spatial grid. It is intended to be a tropospheric product and so data are only reported below altitudes of 12 km. All level 3 parameters are derived from the version 3 CALIOP level 2 aerosol profile product and have been quality screened prior to averaging. The primary quantities reported are vertical profiles of aerosol extinction coefficient at 532 nm and its vertical integral, the aerosol optical depth (AOD). Aerosol type and spatial distribution information are also included. Averaged profile data is reported for all aerosols, regardless of type, and for mineral dust aerosol only. Classification of dust is based on the aerosol type flags in the level 2 profile product.

To keep level 3 file sizes manageable, there are four different types of level 3 files produced, depending on the sky condition and the temporal coverage of the data prior to averaging: All Sky Daytime, All Sky Nighttime, Combined (cloud free + above cloud) Daytime, Combined (cloud free + above cloud) Nighttime.

Description of the Four Sky Conditions

1) All Sky: All quality screened aerosol is included when deriving statistics,

whether from cloudy or cloud free columns.

2) Cloud Free: Only quality screened aerosol optical depths in cloud free columns are included in the statistics. Reported for AOD only.

3) Above Cloud: Only quality screened aerosol in cloudy columns and located above the highest cloud layer are included in the statistics. Reported for AOD only.

4) Combined: Quality screened aerosol in cloud free columns and above clouds are included in the statistics. This selectively excludes aerosol retrieved beneath cloud.

Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) was launched on April 28, 2006 to study the impact of clouds and aerosols on the Earth's radiation budget and climate. It flies in formation with five other satellites in the international "A-Train" (PDF) constellation for coincident Earth observations. The CALIPSO satellite comprises three instruments, the Cloud-Aerosol LIdar with Orthogonal Polarization (CALIOP), the Imaging Infrared Radiometer (IIR), and the Wide Field Camera (WFC). CALIPSO is a joint satellite mission between NASA and the French Agency, CNES.

DOI

10.5067/CALIOP/CALIPSO/CAL_LID_L3_APRO_ALLSKY-STANDARD-V3-10

VIEW RELATED INFORMATION

ANOMALIES

CALIPSO Tilt Mode Geometry Anomaly

DATA CITATION POLICY

How to cite ASDC data

GENERAL DOCUMENTATION

PROCESSING HISTORY

CALIPSO - Data Availability Site

PRODUCT USAGE

Overview of CALIPSO Data Product Maturity

PRODUCTION HISTORY

CALIPSO Products Overview

PUBLICATIONS

CALIPSO - List of publications

CALIPSO: Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations Fact Sheet

USER FEEDBACK PAGE

CALIPSO Data User’s Guide - Frequently Asked Questions

USER'S GUIDE

CALIPSO - Data User's Guide - Browse Image Tutorial
CALIPSO Data User’s Guide

From GCMD Science Keywords:

AEROSOL OPTICAL DEPTH/THICKNESS
AEROSOL EXTINCTION

Column Aerosol Optical Depth
Aerosol Layer Properties
532nm Extinction Coefficient

Data Distribution

Current Products

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Spatial Information

Spatial Coverage: (-85, 85), (-180, 180)
Spatial Coverage Type: Horizontal
Longitude Resolution: 5 degrees
Latitude Resolution: 2 degrees
Vertical Resolution: 60 m
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

SOUTHERN OCEAN

Temporal Information

Temporal Coverage: 2016-12-01 - 2017-01-01

Platforms

Earth Observation Satellites

CALIPSO

Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations

CALIOP

Cloud-Aerosol Lidar with Orthogonal Polarization

Metadata Dates

Created on 2017-02-28

Last updated on 2020-08-03