Identification

Title

Aerosol indirect effects as a function of cloud top pressure

Abstract

Aerosol indirect effects are quantified as a function of cloud top pressure over India and the Indian Ocean in February and March 2003-2005 from analyses of moderate resolution imaging spectroradiometer (MODIS) radiances, reflectance, and aerosol optical depth data. We test the hypothesis that aerosol indirect effects are present throughout the troposphere. Theoretical cloud reflectance values are calculated by application of the discrete-ordinate DISORT multiple scattering program, as a function of cloud top pressure, aerosol optical depth, and cloud phase (i.e., liquid droplets and cloud ice), and are compared to MODIS cloud reflectance data at 1.38 and 3.75 μm. Aerosol indirect effects are apparent for pressure levels associated with liquid droplets; that is, derivatives of cloud reflectance with respect to aerosol optical depth at 3.75 μm for liquid droplets over land and ocean are larger than corresponding derivatives associated with theoretical aerosol direct effects. Aerosol indirect effects are not apparent for pressure levels associated with tropospheric ice crystals.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.org/ark:/85065/d7v69jtr

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2007-03-16T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact