METOP GOME-2 - Cloud Optical Thickness (COT) - Global

The Global Ozone Monitoring Experiment-2 (GOME-2) instrument continues the long-term monitoring of atmospheric trace gas constituents started with GOME / ERS-2 and SCIAMACHY / Envisat. Currently, there are three GOME-2 instruments operating on board EUMETSAT's Meteorological Operational satellites MetOp-A, -B and -C, launched in October 2006, September 2012, and November 2018, respectively. GOME-2 can measure a range of atmospheric trace constituents, with the emphasis on global ozone distributions. Furthermore, cloud properties and intensities of ultraviolet radiation are retrieved. These data are crucial for monitoring the atmospheric composition and the detection of pollutants. DLR generates operational GOME-2 / MetOp level 2 products in the framework of EUMETSAT's Satellite Application Facility on Atmospheric Chemistry Monitoring (AC-SAF). GOME-2 near-real-time products are available already two hours after sensing.

OCRA (Optical Cloud Recognition Algorithm) and ROCINN (Retrieval of Cloud Information using Neural Networks) are used for retrieving the following geophysical cloud properties from GOME and GOME-2 data: cloud fraction (cloud cover), cloud-top pressure (cloud-top height), and cloud optical thickness (cloud-top albedo). OCRA is an optical sensor cloud detection algorithm that uses the PMD devices on GOME / GOME-2 to deliver cloud fractions for GOME / GOME-2 scenes. ROCINN takes the OCRA cloud fraction as input and uses a neural network training scheme to invert GOME / GOME-2 reflectivities in and around the O2-A band. VLIDORT [Spurr (2006)] templates of reflectances based on full polarization scattering of light are used to train the neural network. ROCINN retrieves cloud-top pressure and cloud-top albedo. The cloud optical thickness is computed using libRadtran [Mayer and Kylling (2005)] radiative transfer simulations taking as input the cloud-top albedo retrieved with ROCINN. For more details please refer to relevant peer-review papers listed on the GOME and GOME-2 documentation pages: https://atmos.eoc.dlr.de/app/docs/

Citation proposal
. METOP GOME-2 - Cloud Optical Thickness (COT) - Global. https://gdk.gdi-de.org/geonetwork/srv/api/records/810631f4-c311-44f2-9ced-c2260df2bc06

Simple

Date ( Creation ): 2020-02-22T00:00:00

Edition

Identifier: https://geoservice.dlr.de/catalogue/srv/metadata/810631f4-c311-44f2-9ced-c2260df2bc06

Presentation form: Digital map

Status: On going

Point of contact

German Aerospace Center (DLR)

Distributor

German Aerospace Center (DLR)

Maintenance and update frequency: Continual

Keywords

MetOp-A
MetOp-B
MetOp-C
GOME-2
COT
Cloud Optical Thickness
AC-SAF
GOME.TC.AGG
urn:eop:DLR:EOWEB:GOME.TC.AGG
FEDEO

GEMET - INSPIRE themes, version 1.0 ( Theme )

Atmospheric conditions

Use limitation: Nutzungsbedingungen: Das DLR ist nicht haftbar für Schäden, die sich aus der Nutzung ergeben. / Terms of use: DLR not liable for damage resulting from use.

Access constraints: Other restrictions

Other constraints: License

Use constraints: License

Use constraints: Other restrictions

Other constraints: Nutzungsbedingungen: Lizenz, https://geoservice.dlr.de/resources/licenses/ac_saf/AC-SAF_User_License.pdf / Terms of use: License, https://geoservice.dlr.de/resources/licenses/ac_saf/AC-SAF_User_License.pdf

Spatial representation type: Grid

Denominator: 80000000

Metadata language: English

Character set: UTF8

Topic category

Climatology, meteorology, atmosphere

Reference system identifier: EPSG / WGS 84 (EPSG:4326) / 7.4

Distribution format

OnLine resource: EOC Geoservice Map Context
EOC Geoservice Map Context (metop:gome2.tc.daily)

OnLine resource: DLR-ATMOS FTP-server
For data access via FTP, please register at https://acsaf.org/registration_form.html or contact helpdesk@acsaf.org.

OnLine resource: https://atmos.eoc.dlr.de/app/missions/gome2

OnLine resource: METOP GOME-2 - Cloud Optical Thickness (COT) - Global
EOWEB GeoPortal Collection

OnLine resource: METOP-B_GOME-2_L2C_P1D_COT
MetOp-B GOME-2 L2C Daily COT

OnLine resource: METOP-C_GOME-2_L2C_P1D_COT
MetOp-C GOME-2 L2C Daily COT

OnLine resource: METOP_GOME-2_L2C_P1D_COMB_COT
MetOp GOME-2 L2C Daily COT Combined

OnLine resource: METOP-B_GOME-2_L2C_P1D_COT
MetOp-B GOME-2 L2C Daily COT

OnLine resource: METOP-C_GOME-2_L2C_P1D_COT
MetOp-C GOME-2 L2C Daily COT

OnLine resource: METOP_GOME-2_L2C_P1D_COMB_COT
MetOp GOME-2 L2C Daily COT Combined

OnLine resource: https://geoservice.dlr.de/eoc/atmosphere/wms?SERVICE=WMS&REQUEST=GetCapabilities

OnLine resource: https://geoservice.dlr.de/eoc/atmosphere/wcs?SERVICE=WCS&REQUEST=GetCapabilities

Hierarchy level: Series

Domain consistency

Measure identification: INSPIRE / Conformity_001

Conformance result

Date ( Publication ): 2010-12-08

Explanation: See the referenced specification

Pass: true

Statement: Please refer to relevant peer-review papers listed on the GOME and GOME-2 documentation pages for more details on cloud optical thickness retrieval: https://atmos.eoc.dlr.de/app/docs/