@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/3c5cf319-3005-44c3-8b27-3544e862da89>
  skos:changeNote """2020-09-14 15:13:11.0 [sritz]  
update WeightedRelation (Platform-Instrument); 
update WeightedRelation (1.0); 
""", """2015-01-12 20:31:27.0 [saritz]  
insert AltLabel (id: null
text: Cloud-Aerosol Transport System
language code: en); 
insert Definition (id: null
text: The Cloud-Aerosol Transport System (CATS), launched 2015-01-10 aboard SpaceX CRS-5), is a lidar remote sensing instrument that will provide range-resolved profile measurements of atmospheric aerosols and clouds from the International Space Station (ISS). CATS is intended to operate on-orbit for at least six months, and up to three years.
language code: en); 
""", """2015-01-12 20:27:55.0 [saritz] Insert Concept 
add broader relation (CATS [3c5cf319-3005-44c3-8b27-3544e862da89,106693] - Lidar/Laser Sounders [7c13f166-8711-4d2f-9251-4635002c6c31,74855]); 
""", """2020-09-14 15:10:24.0 [sritz]  
update Definition (The Cloud-Aerosol Transport System (CATS), launched on 10 January 2015, is a lidar remote sensing instrument that provides range-resolved profile measurements of atmospheric aerosols and clouds. Data from CATS is used to derive properties of cloud/aerosol layers including: layer height, layer thickness, backscatter, optical depth, extinction, and depolarization-based discrimination of particle type. The instrument is located on the Japanese Experiment Module – Exposed Facility (JEM-EF) on the International Space Station (ISS). The ISS orbit is a 51-degree inclination orbit at an altitude of about 405 km. This orbit provides more comprehensive coverage of the tropics and mid-latitudes than sun-synchronous orbiting sensors, with nearly a three-day repeat cycle. CATS is intended to operate on-orbit for at least six months, and up to three years. The CATS payload is designed to provide a combination of long-term operational science, in-space technology demonstration, and technology risk reduction for future Earth Science missions. 

Science Goals:
The measurements of atmospheric clouds and aerosols provided by the CATS payload will be used for three main science objectives:

1. Provide real-time observations of aerosol vertical distribution as inputs to global models. The vertical profile information obtained by CATS, particularly at multiple wavelengths and with depolarization information obtained in Modes 1 and 3, provides height location of cloud and aerosol layers, as well as information on particle size and shape.

2. Extend the space-based lidar record for continuity in the lidar climate observations. The CATS instrument will provide measurements of cloud and aerosol profiles similar to CALIPSO, filling in the data gap, so this information can continually be used to improve climate models and our understanding of the Earth system and climate feedback processes.

3. Advance technology in support of future space-based lidar mission development by demonstrating the ability to retrieve vertical profiles using the High Spectral Resolution Lidar (HSRL) technique and 355 nm wavelength.

Modes of Operation:
To meet these three science goals, CATS operates in three different modes using four instantaneous fields of view (IFOV):

Mode 1 Multi-beam backscatter detection at 1064 and 532 nm, with depolarization measurement at both wavelengths.
Mode 2 Demonstration of HSRL aerosol measurements.
Mode 3 Demonstration of 355-nm profiling.


Group: Instrument_Details
   Entry_ID: CATS
   Group: Instrument_Identification
      Instrument_Category: Earth Remote Sensing Instruments
      Instrument_Class: Active Remote Sensing
      Instrument_Type: Profilers/Sounders
      Instrument_Subtype: Lidar/Laser Sounders
      Short_Name: CATS
      Long_Name: Cloud-Aerosol Transport System
   End_Group
   Group: Instrument_Associated_Sensors
      Short_Name: HSRL
      Short_Name: LIDAR
   End_Group
   Group: Associated_Platforms
      Short_Name: ISS
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: INFRARED > REFLECTED
      Spectral_Frequency_Coverage_Range: 1064 nm
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: VISIBLE
      Spectral_Frequency_Coverage_Range: 532 nm
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: ULTRAVIOLET
      Spectral_Frequency_Coverage_Range: 355 nm
   End_Group
   Online_Resource: https://cats.gsfc.nasa.gov/
   Sample_Image: https://www.nasa.gov/mission_pages/station/research/experiments/cats_on_iss_print.jpg
   Creation_Date: 2015-08-21
   Group: Instrument_Logistics
      Instrument_Start_Date: 2015-01-10
      Instrument_Owner: NASA
   End_Group
End_Group); 
update Definition (NASA CATS home page, https://cats.gsfc.nasa.gov/); 
update Resource (image); 
update Resource (https://www.nasa.gov/mission_pages/station/research/experiments/cats_on_iss_print.jpg); 
""", """2020-09-14 15:12:41.0 [sritz]  
insert WeightedRelation (id: null
related concept uuid: 93c5d18c-be62-46c4-9545-42f73a854d85
relationship type: null
relationship value: null
generated by: null); 
""" ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/7c13f166-8711-4d2f-9251-4635002c6c31> ;
  ns0:resource [ ] ;
  a skos:Concept ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:definition """The Cloud-Aerosol Transport System (CATS), launched on 10 January 2015, is a lidar remote sensing instrument that provides range-resolved profile measurements of atmospheric aerosols and clouds. Data from CATS is used to derive properties of cloud/aerosol layers including: layer height, layer thickness, backscatter, optical depth, extinction, and depolarization-based discrimination of particle type. The instrument is located on the Japanese Experiment Module – Exposed Facility (JEM-EF) on the International Space Station (ISS). The ISS orbit is a 51-degree inclination orbit at an altitude of about 405 km. This orbit provides more comprehensive coverage of the tropics and mid-latitudes than sun-synchronous orbiting sensors, with nearly a three-day repeat cycle. CATS is intended to operate on-orbit for at least six months, and up to three years. The CATS payload is designed to provide a combination of long-term operational science, in-space technology demonstration, and technology risk reduction for future Earth Science missions. 

Science Goals:
The measurements of atmospheric clouds and aerosols provided by the CATS payload will be used for three main science objectives:

1. Provide real-time observations of aerosol vertical distribution as inputs to global models. The vertical profile information obtained by CATS, particularly at multiple wavelengths and with depolarization information obtained in Modes 1 and 3, provides height location of cloud and aerosol layers, as well as information on particle size and shape.

2. Extend the space-based lidar record for continuity in the lidar climate observations. The CATS instrument will provide measurements of cloud and aerosol profiles similar to CALIPSO, filling in the data gap, so this information can continually be used to improve climate models and our understanding of the Earth system and climate feedback processes.

3. Advance technology in support of future space-based lidar mission development by demonstrating the ability to retrieve vertical profiles using the High Spectral Resolution Lidar (HSRL) technique and 355 nm wavelength.

Modes of Operation:
To meet these three science goals, CATS operates in three different modes using four instantaneous fields of view (IFOV):

Mode 1 Multi-beam backscatter detection at 1064 and 532 nm, with depolarization measurement at both wavelengths.
Mode 2 Demonstration of HSRL aerosol measurements.
Mode 3 Demonstration of 355-nm profiling.


Group: Instrument_Details
   Entry_ID: CATS
   Group: Instrument_Identification
      Instrument_Category: Earth Remote Sensing Instruments
      Instrument_Class: Active Remote Sensing
      Instrument_Type: Profilers/Sounders
      Instrument_Subtype: Lidar/Laser Sounders
      Short_Name: CATS
      Long_Name: Cloud-Aerosol Transport System
   End_Group
   Group: Instrument_Associated_Sensors
      Short_Name: HSRL
      Short_Name: LIDAR
   End_Group
   Group: Associated_Platforms
      Short_Name: ISS
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: INFRARED > REFLECTED
      Spectral_Frequency_Coverage_Range: 1064 nm
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: VISIBLE
      Spectral_Frequency_Coverage_Range: 532 nm
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: ULTRAVIOLET
      Spectral_Frequency_Coverage_Range: 355 nm
   End_Group
   Online_Resource: https://cats.gsfc.nasa.gov/
   Sample_Image: https://www.nasa.gov/mission_pages/station/research/experiments/cats_on_iss_print.jpg
   Creation_Date: 2015-08-21
   Group: Instrument_Logistics
      Instrument_Start_Date: 2015-01-10
      Instrument_Owner: NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "CATS"@en ;
  ns0:altLabel [ ] .

<https://gcmd.earthdata.nasa.gov/kms/concept/7c13f166-8711-4d2f-9251-4635002c6c31>
  skos:prefLabel "Lidar/Laser Sounders"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/3c5cf319-3005-44c3-8b27-3544e862da89> .

