Long Term Data Preservation Long Term Data Preservation for Global Change Studyfor Global Change Study

GUO HuadongGUO Huadong

hdguo@ceode.ac.cn

Feb.01,2011 Geneva, SwitzerlandFeb.01,2011 Geneva, Switzerland

Impact of Global Change

2

Snow reduceIsland Disappear Glacier retreat

lake area reduces lake area reduces East Juyanhai East Juyanhai

1986/6/91986/6/91986/6/91986/6/9 2002/5/282002/5/282002/5/282002/5/28

Prairie degeneration

官厅水库 , Beijing

1999

2009

天山 Glacier

甘肃省甘南藏族自治州玛曲县 ,09 July 2004

1962

1994

1994

Impact of Global Change

3

Mudrock flow nujiang dongyue river, 2010 Flood,liu zhou, guanxi ， 2009 Arid,2009

Typhoon,2010,No.3, Chanthu Snow disaster,2009,hunan Heat wave, 2009, Jun

National S&T Plan

Mid-Long Term Science and Technology Mid-Long Term Science and Technology Development Plan (2006-2020)Development Plan (2006-2020)

• Earth system processes and their effect on resources, environment and disasters;

• Influential mechanism and extent of human activities on the earth system;

• Global changes and regional responses.

4

National Research Support Recently

Global change studies have been supported by the Ministry of Science and Technology ( MOST), Chinese Academy of Sciences (CAS), and the National Natural Science Foundation of China (NSFC).

5

50.3 %

32.2 %

17.5 %

MOST US$

76.08million

CAS US$ 48.72 million

NSFC US$ 26.47 million

Chinese Earth Observation Satellites

• Meteorological Satellites• Polar Orbit FY-1 A, B, C, D 4• Geo-stationary FY-2A, 2B, 2C,2D,2E 3• Marine Satellite HY-1 1• Resource Satellites (CBERS, ZY, Beijing, Yaogan, Tsinghua) 7• Environmental and Disaster Monitoring Satellites 2• Communication Satellites 7• Navigation Satellites Beidou -1 3 • Return Land Satellites 17• Scientific experiment Satellites 15

• Spacecrafts SZ –1, 2, 3, 4, 5, 6 ， 7 7

6

• Chinese Meteorological Satellites Programs– FY-1 Series: China's 1st Generation of Polar Meteorological Satellites(4

satellites)– FY-2: The First Generation of Geostationary Meteorological Satellite of

China– FY3:Polar Meteorological Satellite (9/2008 launch)

ChinChineseese Earth Observation Satellites Earth Observation Satellites

Meteorology Satellites of China - NSMCMeteorology Satellites of China - NSMC

FY-3, Polar Orbit, 5/2008FY-3, Polar Orbit, 5/2008

FY-1FY-1

FY-1 Polar Orbit FY-1 Polar Orbit

FY-2 GeostationaryFY-2 Geostationary

Tentative Schedule for Future FY SeriesTentative Schedule for Future FY Series

• HY-1 satelliteTo detect the marine environmental parameters of the China Seas, including chlorophyll concentration, suspended sediment concentration, dissolved organic matter, pollutants, as well as sea surface temperature.

Chinese Earth Observation SatelliteChinese Earth Observation Satellite

Ocean Satellites of China - NSOACOcean Satellites of China - NSOAC HY-1B, 1/4/2007HY-1B, 1/4/2007

SuspendeSuspended d sediment sediment distributiodistributionn

Red tide

HY-1 ApplicationHY-1 Application

SST

Future HY-2Future HY-2

• The first CBERS (CBRES-1) was successfully launched on October 14, 1999 and the second one (CBERS-02) was on October 21, 2003.

Payloads CCD ＩＲＭＳＳ ＷＦＩ

Focal distance (mm) 520 1000/500 －

Band (μm)

1: 0.45-0.522: 0.52-0.593: 0.63-0.694: 0.77-0.895: 0.51-0.73

6: 0.50-0.907: 1.55-1.758: 2.08-2.359: 10.4-12.5

10: 0.63-0.6911: 0.77-0.89

Spatial resolution 19.5M 6,7,8: 78M

9: 156M 256M

Temperature resolution － 1.2K －

Swath 113KM 119.5KM 890KM

Speed (Mb/s) 53×2 6.13 1.1

Pixels 5812 6,7,8: 15369: 768 3456

FOV 8.32º 8.8º 59.6º

Orbit 778km

Chinese Earth Observation Satellite Chinese Earth Observation Satellite

Earth Resources Satellites --CBERSEarth Resources Satellites --CBERS

CBERSCBERS

The first stage: 3 satellites

2 optical satellites+ 1 SAR satellites

HJ-1-A/B 、 HJ-1-C

The first stage: 3 satellites

2 optical satellites+ 1 SAR satellites

HJ-1-A/B 、 HJ-1-C

The second stage: 8 satellites

4 optical satellites+4 SAR satellites

The second stage: 8 satellites

4 optical satellites+4 SAR satellites

HJ-1 small satellite constellationHJ-1 small satellite constellation

HJ-1-A/BHJ-1-A/B

Chinese Earth Observation SatellitesChinese Earth Observation Satellites

HJ-1-C

CEODE, CASCEODE, CAS

CEODE ― Center for Earth Observation and Digital Earth Belongs to Chinese Academy of Sciences.

Established on August 23, 2007 by merging three CAS units: – Remote Sensing Satellite Center

– Airborne Remote Sensing Center

– Laboratory of Digital Earth Sciences.

CEODE is committed to: operation of spaceborne and airborne earth observation system and related data services, as well as the exploration of technologies for earth observation and their application demonstrations.

CEODE-A National Research Institute

Director General

Division for Operation of

Airborne Remote Sensing

Satellite Remote Sensing Center

Division for Operation of

Satellite Ground Systems

Ground System Engineering

Division

Satellite Data Pre-processing Division

The Miyun Ground Station

The Sanya Ground Station

Division for the Airplane

Engineering

Division for Optical System Engineering

Division for Data Preprocessing

Division for Micro-wave System Engineering

Division of Digital Earth System

Division of Digital Land

Division of Microwave Earth

Observation

Division of Digital Ocean and

Atmosphere

Division of Optical Earth Observation

Section for Data Management

Section for Data Technology

Section for Customer Service

Spatial Data Center Lab. of Digital Earth Sciences

Airborne Remote Sensing Center

Section for Value Added Products

Collaborative Research Unit

CAS-NRCANCapacity Building

Center

Joint Centre for Spatial Information CEODE-

CRCSI

Joint Laboratory for Remote Sensing and

Archeology

Joint Lab. for Environmental RS and

Data Assimilation

The Kashi Ground Station

Spatial Technology Application Center for International Culture and Natural Heritage

CEODE: CEODE: Satellite Data Receiving Station SystemSatellite Data Receiving Station System

• Miyun Receiving Station (Northern China)

• Kashi Receiving Station (Western China)

• Sanya Receiving Station (Southern China)

EO Data Acquisition & ArchivingEO Data Acquisition & Archiving

Satellite Data Received by CEO

DE

International Satellites

Optical Satellite

LANDSAT-5 1986 -

LANDSAT-7 1999 - 2004

SPOT-1 1998 – 2002

SPOT-2 1998 - 2002

SPOT-4 2000 -

SPOT-5 2002 -

RESOURCESAT-1 2005 -

Radar Satellite

ENVISAT 2003-

ERS-1 1995 - 2000

ERS-2 1995 -

RADARSAT-1 1997 -

RADARSAT-2 2008 -

Dom

estic Satellites

Optical Satellite

CBERS-01 1999 – 2003

CBERS-02 2003 - 2008

CBERS-02B 2007 - 2010

HJ-1A 2008 -

HJ-1B 2008 -

Over 2.50 million scenes of satellite data have been acquired and preserved at CEODE since 1986, providing a precious database for the earth observation .

• Two Cessna Citation S/II Aircrafts • Two ARJ 21-700ER Aircrafts• More than 12 sensors operating from visible-infrared to microwave bands

CEODE: Airborne CEODE: Airborne Remote Sensing SystemRemote Sensing System

EO Data Acquisition & ArchivingEO Data Acquisition & Archiving

Over 50TB data from different kinds of sensor has been acquired .

Played a key role in Wenchuan earthquake (2008) and Yushu earthquake(2010) monitoring, Beijing Olympic village construction(2000~2009), as well as other scientific researches.

The value of historic data is not decreased with time passing by.

Necessary for long term scientific researches and environmental

monitoring applications. 

LTDP is a common knowledge in EO field, and the trend for LTDP

increased strongly in the past years.

Organizations, e.g. USGS, ESA, as well as CEODE, are making

efforts to archive LTDP.

Challenges existing at the points: proper preservation, safe and

efficient accessing, data archiving equipment and media evolution,

etc. 

Long Term Data Preservation Long Term Data Preservation

Before 1999

HDDT mainly

Evolution of Data Archiving at CEODEEvolution of Data Archiving at CEODE

1999 ~ 2008

DLT / SDLT / AIT mainly

After 2008

Massive Archiving & Management System

Data Massive Archiving & Management System Giving up the old mode of disperse processing system with its own tape driver. Built CEODE’s central Massive Archiving System for all the archived raw data

and to be used for all processing systems. Fiber channel and SATA disk arrays, tape robot, are being used. LTO tape used as the permanent archiving media. Automatic management for data archiving, retrieving and migration.

Example:

 

Projects for LTDP Projects for LTDP

SPOT-5 system

 

LANDSAT system

 

SPOT-5 system

 

LANDSAT system

  ENVISAT system

 

RESOURCESAT system

 

ENVISAT system

 

RESOURCESAT system

 

Projects for LTDPProjects for LTDP

Data Remote Backup System Located at Miyun Station, 100km

away from CEODE headquarter. To achieve the purpose of data

double preservation. Dual site mode of data archiving,

backup, as well we being accessed from other sites.

Data retrieving from the other sites in case of local data or media problem.

Catalogue & Browse System

Containing the catalogue and browse image for all the spaceborne EO data of CEODE.

On-line and open to the world. Users are allowed to query and

then to send their requirements. A window to make the data be

accessed and used for scientific researches and remote sensing applications.

Projects for LTDP Projects for LTDP

973 project - Comprehensive Experiment

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There are two experimental areas: one is the roof of the world and the other an area dramatically altered by human activities. Understanding change in these two areas can help contribute to deeper understanding of humankind on global change.

These two areas in China represent specific natural and human environments where multi-scale remotely collected data (both aircraft and spacecraft) can be mutually supportive for global change research.

Develop Methods for Using Multi-scale Observations for Studying Sensitive Global Change Mechanisms .

Global Change Studies with EO

27

Tibet Plateau Test Site

海洋 城市群 湿地 海岸带 草原生态

ENVISAT

RADARSATLANDSAT

SPOT

珠峰站

林芝站

纳木错站

阿里站 慕士塔格站

Bohai Bay Test SiteBohai Bay Test Site

Global Change Studies with EO

Pearl River Delta Area: Urbanization1988 1998

20071988

1988-1998

1998-2007

Environment Change Studies

Glacier Movement

30

Glacier movement by InSARDonkemadi

South Asian brown cloud to climate and Tibet Plateau glacier melting influence

EO raw data: the recorder for the change of the Earth.

The aged data has shown its importance for the global change and can support to IPCC.

Necessity of LTDP increased strongly in the past years.

The challenges of LTDP come from the huge volume and the evolution of archiving media.

Should be doing efforts to achieve the data archiving safer and more efficient.