Data



Data Notes



Extracted from Database

09 Sep 2019

COCHIN (WILLINGDON IS.)

Station Information

Station ID: 438
Latitude: 9.966667
Longitude: 76.266667
GLOSS ID: 32
Coastline code: 500
Station code: 81
Country: INDIA
Time span of data: 1939 – 2013
Completeness (%): 89
MTL Data: 1939-1955
MTL-MSL (mm): 2
Date of last update: 31 Oct 2018

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Tide Gauge Data

Plot of monthly mean sea level data at COCHIN (WILLINGDON IS.).

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at COCHIN (WILLINGDON IS.).

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution.
NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby Real Time Stations from VLIZ: coch
Fast Delivery Data from UHSLC station 174: hourly and daily

Station Documentation

Link to RLR information.

Documentation - date unknown

1939 - 1955 VALUES BASED ON READINGS OF HIGH AND LOW WATERS

Documentation added 1991-06-11

Cochin 500/081 RLR(1963) is 8.2m below BM 27

Documentation added 1994-08-04

For a discussion of interannual variability of sea level along the coasts of Pakistan and India, see Clarke and Liu, Journal of Physical Oceanography, 24, 1224, 1994.

Documentation added 2002-12-06

SMRC Newsletter Jul-Dec 2001 reports high E coast correlation with SOI and MSL. MSL is much higher during La Nina tropical cyclones than during El Nino.

Documentation added 2010-09-15

Original benchmark was BM 41/5 2.722m above the datum for 1886-1891. In 1939 benchmark was changed to BM 27 1.94m relative to chart datum. This remains the primary benchmark.

Documentation added 2016-01-22

A value of MTL-MSL=2 mm has been applied to the RLR data for the period 1939-1955. This value was derived from the average of two differences in the annual MSL and MTL listed for the station in Pub. Sci. 24. Note that no correction has been applied to the metric data.

Data Authority

Survey of India
Geodetic and Research Branch
17 E.C. Road
Dehra Dun
PIN 248 001