1. WGISS-47 Earth Observation Services Metadata ISRO Use Cases
Nitant Dube
Space Applications Centre, ISRO
Ahmedabad, INDIA
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3

2. https://mosdac.gov.in INDIAN Storehouse for Space based Weather Data
METEOROLOGICAL & OCEANOGRAPHIC DATA & INFORMATION SERVICES FROM MOSDAC
Multi Mission Satellite Data Repository
KALPANA1
INSAT3A
OCEANSAT-2
MEGHA-TROPIQUES
SARAL-ALTIKA
INSAT3D /3DR
SCATSAT-1
CAL-VAL – In situ Data
Disdrometer, MicroRain Radar, GPS Sonde, Sun Photometer, Automatic Weather Station, Agromet Station, Automatic Rain Gauge, Hyper Spectral Radiometer, Fluorometer, Radio Sonde.
Forecast
Weather, Cyclogenesis, Cyclone track & Intensity, Sea State, Heavy Rain / Cloud burst
Tools & Utilities
Visualisation and Analysis for multi-mission data
Research and Training
SMART: Satellite Meteorology and Oceanography Research and Training
Planned Missions
INSAT-3DS
GISAT-1 & 2
Oceansat-3 SCAT

3. MOSDAC Data and Information Services
WMS
Satellite images, Vector data in png
THREDDS
Satellite data
Satellite data (Open Data)
HTTPS
Information/ Alert
RSS Feeds
Information/ Alert
Micro Services
Information Products
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3

4. CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3
Services Metadata
Service
Metadata
WMS
Self Describing, GetCapabilities response returns a defined XML document providing information about the services
THREDDS
catalogue/enhanced catalogues files provide metadata about services
HTTPS
Html <meta> tag provides metadata about the html document, this is machine readable.
User can request the metadata about service by sending blank mail to defined address. (Currently this service is available only to authorized users.
RSS-Feeds
Metadata tags in RSS-Feeds
Micro Services
Service Registry
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3

5. CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3
RSS-Feeds (Alerts)
<?xml version="1.0" encoding="utf-8" ?><rss version="2.0" xml:base=" xmlns:dc=" xmlns:atom=" xmlns:content=" xmlns:foaf=" xmlns:og=" xmlns:rdfs=" xmlns:sioc=" xmlns:sioct=" xmlns:skos=" xmlns:xsd="
<channel>
<title>Alerts</title>
<link>
<description></description>
<language>en</language>
<atom:link href=" rel="self" type="application/rss+xml" />
<item>
<title>Heavy Rain (Nowcast)</title>
<link>
<description> Heavy Rain Alerts in Chavakkad Anamalai Anaimalai cities of India</description>
<pubDate>30 Apr :51</pubDate>
<dc:creator>0</dc:creator>
<guid isPermaLink="false">Heavy Rain (Nowcast)</guid>
</item>
<title>Heavy Rain (Forecast)</title>
<link>
<description> Heavy Rain Alerts in Erode Tiruchengode Hassan cities of India</description>
<guid isPermaLink="false">Heavy Rain (Forecast)</guid>
</channel>
</rss>
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3

6. CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3
THREDDS (Catalogue)
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3

7. WMS (Getcapabilities)
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3

8. CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3
Microservices
Microservices
Split-up application as separate service
Loosely coupled
Reactive programming
Architecture
Functionality as a service
Continuous delivery and integration
Design Patterns
API Gateway
Service Registry
Service Discovery
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3

9. Microservices at MOSDAC
Safe Beach Micro-service
Get All INDIA Beaches
Get nearest Beaches to the location (Location based service-LBS)
Get Status of Beaches (Patrolled, Swimming, guarded)
Get Safe beach Forecast available for respective beach.
Alert Dashboard Micro-service
Get Alert status for INDIA
Get Alert status for location (Location based service-LBS)
Get location based on IP address
Weather forecast Micro-service
Get 3-Hourly Weather Forecast for location (Location based service-LBS)
We are in process of releasing the Micoservice service registry URL for operational use
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3

10. Challenges in Service Metadata
Unlike data there is very little work and standardization for services metadata
As services are assumed to be self describing, the metadata becomes part of the service, this results in non standardized metadata tags across different services.
Lack of generalized tools for reading/discovery of service metadata
Metadata tags to support Service orchestration.
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3

11. Thanks nitant@sac.isro.gov.in
CEOS, WGISS-47, Silver Spring, Maryland, USA, April 29-May 3