Marine Surface and Climate Data Gaps in the archives at the National Center for Atmospheric Research...
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Transcript of Marine Surface and Climate Data Gaps in the archives at the National Center for Atmospheric Research...
Marine Surface and Climate Data Gaps
in the archives at the National Center for Atmospheric
Researchfor
15th U.S. – China Marine and Fishery Science and Technology Joint Working
Meeting
Steven Worley, NCAR5 March, 2002
Outline
• Previous exchanges and co-operations with the U.S. COADS project
• Status of Chinese data in the major archives at NCAR
• Future exchanges
Previous Exchanges and Co-operations
• From China to U.S.– Digitized, U.S. Maury ship logbooks
• Data for ~1800-1863, 1.3 x 106
Observations• Now in COADS• Minor details
– Finished about 1996– Organizations SOA/NMDIS/CNODC and
NOAA/NESDIS/NCDC– Responsible persons Guo Fengyi and Joe Elms
U.S. Maury Collection Digitized by China
1.3 M Reports, ~1800 -1863
Previous Exchanges and Co-operations
• From China to U.S.– Digitized, U.S. Marine Meteorological
Journals• Data for 1878-1894, 1.8 x 106 Observations• Data to be included in COADS • Minor Details
– Work began in 1998– Organizations SOA/NMDIS/CNODC and
NOAA/NESDIS/NCDC + NCAR– Responsible persons Mr. Guo Fengyi, Joe Elms
and Steven Worley
MMJ, 1878-1894, 1.8M reports
Previous Exchanges and Co-operations
• From U.S. to China– Global land surface archive
• Data for 1967-1998, complete GTS archive• Minor Details
– Delivered 1997, observations 1967-1997, to Mr. Guo Fengyi
– Delivered 1999, obs. extension 1998, to Mr. Guo Fengyi
– Responsible person, Steven Worley
Previous Exchanges and Co-operations
• From U.S. to China– COADS
• Data for ~1800-1997– 155 x 106 Observations, and Monthly Statistics– Delivered June 2001
• Minor Details– Early deliveries, 1985, 1994, 1997, and 2000– Generally to Mr. Guo Fengyi– Responsible persons, Steven Worley and Joe
Elms
Current Status in major NCAR Archives
• What data of Chinese origin are in the marine surface archives?
• What is in COADS?– Difficult to assess
• Ships are not located within political boundaries
• China did not participate in the WMO Resolution 35 – keyed logbook data to GCC’s
– Chinese vessels may report over the GTS• Hong Kong is a Res. 35 participant, use as
example (an under estimate of what is available)
0
5
10
15
20
25
# of
Rep
orts
(10*
*3)
1960 1963 1966 1969 1972 1975 1978 1981 1984 1987 1990 1993 1996
Annual Reports in COADS
Hong Kong
Reports in COADS
1960-1997• Hong Kong
Current Status in major NCAR Archives
• Future data to be added to COADS– Data from the GODAR Project CDROM
0
5
10
15
20
25
30
35
40
45
# of
Obs
. (10
**3)
1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995
Years
GODAR Chinese Surface Obs.
GODAR Project CDROM
• Not yet in COADS
1968 – 1993
424K ReportsEvery 50th station location is plotted
Current Status in major NCAR Archives
• Future data to be added to COADS– Data sources held at NODC
• From previous Working Group exchanges• Details not available, but needed for
accurate assessment in conjunction with COADS
– E.g, WG 2000, 1954-1994 marine meteorological data, and fixed buoy data, more?
Current Status in major NCAR Archives
• Land Station Data from China– Upper Air Data– Land Surface Data
• Global climate system modeling• Global atmospheric reanalysis
computations• Global climate trend studies
0
200
400
600
800
1000
1200
1400
# of
Obs
erva
tions
(10*
*3)
1944 1947 1950 1953 1956 1959 1962 1965 1968 1971 1974 1977 1980
Years
TD13 and DS463 Observations
0100200300400500600700800900
1000#
of S
tatio
ns
1944 1947 1950 1953 1956 1959 1962 1965 1968 1971 1974 1977 1980
Years
TD13 & DS463 Stations
China Surface Observation and Stations Counts
1944-1980
China Land Surface Station Locations, 1976
Global Upper Air Stations
0
200
400
600
800
1000
1200
1400
1600
1800
2000
1949 1953 1957 1961 1965 1969 1973 1977 1981 1985 1989 1993 1997
Year
Num
ber
of S
tatio
ns
allchina
Future ExchangesProposed Project:Would China digitize more Maury data
found in Germany?– Data for ~1845-1867, ~820 Voyages, up to
1x106 records (very preliminary estimate)– Minor Details
• Logbooks moved to Germany during American Civil War?
• Professor Lin Shaohua (of NMDIS and Coordinator of JCOMM's Data Management Programme Area) has expressed interest in digitization projects
• Many details need to be worked out (Maybe a combination of MMJ and U.S. Maury strategies)
• The journal pages have been scanned as images and are (will be) available on CDROM
Release 2.0 (dark blue) vs. Release 1 (light blue) reports/yearFuture blend candidates: red (undigitized), yellow (partly), green
(fully)GODAR1968-1993, 424K
Future ExchangesData Available from the U.S./NCAR for
China• Future releases of COADS• Possible products from the NCAR
archives– http://dss.ucar.edu– SST analyses– NN Reanalysis 1948-2001– New analyzed products from COADS
Valuable data from China not in the U.S.
⇛More information like the GODAR Project CDROM if not already at NODC
⇛ Pre-1956 and 1965-1966 land surface stations
–Station histories and libraries for stations in China
⇛ River flow data for major drainages in China
⇛ Pre-1956 Upper Air stations in China
⇛ Examples of Historical Documentation
→
→
→
End
0
5
10
15
20
25
# of
Rep
orts
(10*
*3)
1960 1963 1966 1969 1972 1975 1978 1981 1984 1987 1990 1993 1996
Annual Reports in COADS
Hong Kong
0
50
100
150
200
250
300
# of
Rep
orts
(10*
*3)
1960 1963 1966 1969 1972 1975 1978 1981 1984 1987 1990 1993 1996
Annual Reports in COADS
Hong Kong Japan Malaysia
Reports in COADS
1960-1997• Hong Kong• Japan• Malaysia