MYD04_L2 - MODIS/Aqua Aerosol 5-Min L2 Swath 10km

These data are a copy of MODIS data from the NASA Level-1 and Atmosphere Archive & Distribution System (LAADS) Distributed Active Archive Center (DAAC). The copy is potentially only a subset. Below is the description from https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/MYD04_L2

"The MODIS Aerosol Product monitors the ambient aerosol optical thickness over the oceans globally and over a portion of the continents. Further, the aerosol size distribution is derived over the oceans, and the aerosol type is derived over the continents. Daily Level-2 data are produced at the spatial resolution of a 10x10 1-km pixel array (at nadir).

Prior to MODIS, satellite measurements were limited to reflectance measurements in one (GOES, METEOSAT) or two (AVHRR) channels. There was no real attempt to retrieve aerosol content over land on a global scale. Algorithms had been developed for use only over dark vegetation. The blue channel on MODIS, not present on AVHRR, offers the possibility to extend the derivation of optical thickness over land to additional surfaces. The algorithms use MODIS bands 1 through 7 and 20 and require prior cloud screening using MODIS data. Over the land, the dynamic aerosol models are derived from ground-based sky measurements and used in the net retrieval process.

Over the ocean, three parameters that describe the aerosol loading and size distribution are retrieved. Pre-assumptions on the general structure of the size distribution are required in the inversion of MODIS data, and the volume-size distribution is described with two log-normal modes: a single mode to describe the accumulation mode particles (radius < 0.5 µm) and a single coarse mode to describe dust and/or salt particles (radius > 1.0 µm).

The quality assurance control of these products will be based on comparison with ground stations and climatology.

For additional details see the MODIS Atmospheres web site page onCollection 6.1 Updates. "

Shortname: MYD04_L2 , Platform: Aqua , Instrument: MODIS , Processing Level: Level-2 , Spatial Resolution: 10 km , Temporal Resolution: 5 minute , ArchiveSets: 61 , Collection: MODIS Collection 6.1 - Level 1, Atmosphere, Land (ArchiveSet 61) , PGE Number: PGE04 , File Naming Convention: MYD04_L2.AYYYYDDD.HHMM.CCC.YYYYDDDHHMMSS.hdf YYYYDDD = Year and Day of Year of acquisition HHMM = Hour and Minute of acquisition CCC = Collection number YYYYDDDHHMMSS = Production Date and Time AYYYYDDD = Year and Day of Year of acquisition , Citation: Levy, R., Hsu, C., et al., 2015. MODIS Atmosphere L2 Aerosol Product. NASA MODIS Adaptive Processing System, Goddard Space Flight Center, USA: http://dx.doi.org/10.5067/MODIS/MYD04_L2.061 , Keywords: Climate Change, Atmospheric Correction, Aerosol Optical Depth/Thickness

Date (Publication): 2021-04-15T14:06:47

Date (Creation): 2021-04-15T14:06:47

Citation identifier: https://catalogue.ceda.ac.uk/uuid/1f4e19c154e64d2489d6516d5fd19f91

Citation identifier: National Aeronautics and Space Administration (NASA) / 1f4e19c154e64d2489d6516d5fd19f91

Point of contact

Organisation name	Electronic mail address	Role
National Aeronautics and Space Administration (NASA)	unknown	Author
NERC EDS Centre for Environmental Data Analysis	support@ceda.ac.uk	Custodian
NERC EDS Centre for Environmental Data Analysis	support@ceda.ac.uk	Distributor
National Aeronautics and Space Administration (NASA)	unknown	Principal investigator
NERC EDS Centre for Environmental Data Analysis	support@ceda.ac.uk	pointofContact
National Aeronautics and Space Administration (NASA)	unknown	Publisher

Maintenance and update frequency: As needed

Update scope: Dataset

Keywords

Climate Change
Atmospheric Correction
Aerosol Optical Depth/Thickness

GEMET - INSPIRE themes, version 1.0

orthoimagery

Access constraints: Other restrictions

Other constraints: Public data: access to these data is available to both registered and non-registered users.

Use constraints: Other restrictions

Other constraints: Under the following licence https://modaps.modaps.eosdis.nasa.gov/services/faq/LAADS_Data-Use_Citation_Policies.pdf, appropriate use of these data may fall under unclassified use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: Grid

Language: English

Topic category

Imagery base maps earth cover

Begin date: 2002-07-03T23:55:00

Unique resource identifier: WGS 84

Distribution format

Name	Version
HDF

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Centre for Environmental Data Analysis		support@ceda.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/1f4e19c154e64d2489d6516d5fd19f91	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/neodc/modis/data/MYD04_L2	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	https://ladsweb.modaps.eosdis.nasa.gov/search/order/2/MYD04_L2--61	LAADS DAAC - Search for Product Files

OnLine resource

Protocol	Linkage	Name
	https://ladsweb.modaps.eosdis.nasa.gov/archive/allData/61/MYD04_L2/	LAADS DAAC - Data Archive

OnLine resource

Protocol	Linkage	Name
	http://modis-atmos.gsfc.nasa.gov/products/aerosol/file-spec/	File Specification

OnLine resource

Protocol	Linkage	Name
	http://dx.doi.org/10.5067/MODIS/MYD04_L2.061	LAADS DAAC DOI: 10.5067/MODIS/MYD04_L2.061

Hierarchy level: Dataset

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services