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Dataset

 

MODIS Geolocation Data Set from the Terra Satellite (MOD03)

Update Frequency: As Needed
Latest Data Update: 2023-06-19
Status: Ongoing
Online Status: ONLINE
Publication State: Published
Publication Date: 2014-09-15
Download Stats: last 12 months
Dataset Size: 2.55M Files | 72TB
Abstract

The MODIS Geolocation Data Set is a Level 1B product which contains geodetic coordinates, ground elevation, and solar and satellite zenith, and azimuth angle for each MODIS 1 km sample. These are determined from spacecraft attitude and orbit, instrument telemetry, and a digital elevation model. The primary purpose of this product is to help further processing the Level 1B calibrated radiances and the Level 2 data sets.

Citable as:  National Aeronautics and Space Administration (2014): MODIS Geolocation Data Set from the Terra Satellite (MOD03). NERC Earth Observation Data Centre, date of citation. https://catalogue.ceda.ac.uk/uuid/af743b462092a888e228bd1d7e0c2c4a
Abbreviation: Not defined
Keywords: Not defined

Details

Previous Info:
No news update for this record
Previously used record identifiers:
http://badc.nerc.ac.uk/view/neodc.nerc.ac.uk__ATOM__ACTIVITY_c40bbfe8-3ce2-11e4-823b-00163e251233
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: https://modaps.modaps.eosdis.nasa.gov/services/faq/LAADS_Data-Use_Citation_Policies.pdf. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

The data were obtained by the MODIS Science Team, which were then downloaded and made available by the Quality Assurance for Essential Climate Variable (QA4ECV) Team to the NEODC for archiving after completeness checks had been carried out using MD5 checksums to ensure bitwise complete transfers.
File Format:
Data availability and file format

The MODIS Geolocation Dataset from Terra is available in HDF-EOS format, spanning from the start of the mission until present.

More Information (under review)


Introduction

The MODIS Geolocation Data Set is a Level 1B product which contains geodetic coordinates, ground elevation, and solar and satellite zenith, and azimuth angle for each MODIS 1 km sample. These are determined from spacecraft attitude and orbit, instrument telemetry, and a digital elevation model. The primary purpose of this product is to help further processing the Level 1B calibrated radiances and the Level 2 data sets.


Restricted Data Access

The MODIS data stored at CEDA-NEODC are available to registered CEDA users. To obtain access to the data please register as a CEDA user. If you already are a CEDA-NEODC registered user, skip this step. If you have forgotten your NEODC user ID and/or password, please contact the CEDA-NEODC helpdesk at support@ceda.ac.uk.


Data availability and file format

The MODIS Geolocation Dataset from Terra is available in HDF-EOS format, spanning from the start of the mission until present.


Documentation and Links to further information and references

Non-technical description of the product can be found on the MODIS website


Who to contact

For assistance accessing this dataset, please contact the CEDA-NEODC helpdesk

Related Documents

 NASA Product Summary
 NASA MOD03 Non-technical Description
 NASA Data Product Description

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Mobile platform operations

Mobile Platform Operation 1 Terra Satellite orbit details

Computation Element: 1

Title DETAILS NEEDED - COMPUTATION CREATED FOR SATELLITE COMPOSITE. deployed on Terra Satellite, part of the Earth Observation System Morning Constellation (EOS-AM)
Abstract This computation involved: DETAILS NEEDED - COMPUTATION CREATED FOR SATELLITE COMPOSITE. deployed on Terra Satellite, part of the Earth Observation System Morning Constellation (EOS-AM).
Input Description None
Output Description None
Software Reference None
Output Description

None
  • units: seconds
  • var_id: EV center time
  • var_id: EV frames
  • units: seconds
  • var_id: EV start time
  • units: meters
  • var_id: Focal_length
  • var_id: Geo scan quality
  • var_id: Height
  • units: meters
  • units: km
  • var_id: Height Offset
  • var_id: L1 scan quality
  • var_id: Land/SeaMask
  • units: degrees
  • var_id: Latitude
  • units: degrees
  • var_id: Longitude
  • var_id: Mirror side
  • var_id: Moon Vector
  • units: meters
  • var_id: Range
  • units: radians
  • var_id: SD Sun azimuth
  • units: radians
  • var_id: SD Sun zenith
  • var_id: SD frames
  • units: seconds
  • var_id: SD start time
  • var_id: SV frames
  • units: seconds
  • var_id: SV start time
  • var_id: Scan Offset
  • units: km IFOV
  • var_id: Scan Type
  • var_id: Scan number
  • units: degrees
  • var_id: SensorAzimuth
  • units: degrees
  • var_id: SensorZenith
  • units: degrees
  • var_id: SolarAzimuth
  • units: degrees
  • var_id: SolarZenith
  • var_id: T_inst2ECR
  • var_id: T_offset
  • units: frame sample time
  • units: km IFOV
  • var_id: Track Offset
  • var_id: WaterPresent
  • units: radians
  • var_id: attitude_angles
  • var_id: attitude_quality
  • units: frame sample time
  • var_id: band_position
  • units: meters
  • var_id: detector_offsets
  • units: meters
  • var_id: detector_space
  • var_id: ephemeris_quality
  • var_id: gflags
  • var_id: impulse_enc
  • units: encoder pulses
  • units: seconds
  • var_id: impulse_time
  • var_id: num_impulse
  • var_id: num_samples
  • units: meters
  • var_id: orb_pos
  • units: meters per second
  • var_id: orb_vel
  • var_id: sun_ref
  • units: degrees
  • var_id: thermal_correction

Co-ordinate Variables

Coverage
Temporal Range
Start time:
2000-02-24T00:00:00
End time:
Ongoing
Geographic Extent

 
90.0000°
  
-180.0000°
  
180.0000°
 
-90.0000°
  
Related parties
Authors (1)
Publishers (1)
Principal Investigators (1)