Climate Indices

Select climate indices according to the following criteria:











  • Time series: evolution of observations (inter-annual variability)
  • Seasonal/annual cycle: monthly or seasonal "normals" for a year's period, calculated using a large number of years (preferably the 1971-2000 period).
  • Anomalies: evolution of anomalies (observations - normals)

Oceanographic

NAME UPDATE FREQ. VAR. CODE DEPTH TIME SERIES TIME SERIES FREQ. CYCLE CYCLE FREQ. INDEX ORIGIN DATA ORIGIN
1. Monthly sea level
Monthly-averaged sea level computed from selected tidal stations' records
Monthly SL Surface 1895-
2017
Monthly 1981-
2010
Monthly MEDS DFO
2. Sea Surface Temperature Climatology
Annual cycle of SST derived from harmonic analysis performed on remote sensing observations
Yearly SST Surface x x 1981-
2000
daily MEDS/ BIO NOAA-JPL AVHRR MCSST
3. Labrador Current Volume Transport
Surface (top 200 m) geostrophic transport across Newfoundland and Grand Banks slopes derived from TOPEX/Poseidon altimetry
Yearly MT Surface 1992-
2013
Monthly x x NAFC TOPEX/ Poseidon
4. Gulf Stream and Shelf/Slope Fronts
Mean position and anomaly of the Gulf Stream and Shelf/Slope Fronts
Yearly LAT Surface 1966-
2015
Monthly x x BIO Jennifer Clark /NOAA /NAVO /JHU ALP
5. Coastal SST
Annual averages and cycle of SST near Boothbay, St. Andrews and Halifax
Yearly T Surface 1902-
2015
Yearly 1981-
2010
Monthly BIO DFO
6. East Coast Offshore Hydrographic Stations
Annual averages and cycle of surface and bottom temperature at offshore hydrographic stations
Yearly SST 0-
250
1912-
2015
Yearly 1981-
2010
Monthly BIO DFO
7. Depth-layer Conditions for the Gulf of St. Lawrence
Layer Averaged Yearly Conditions in the Gulf of St. Lawrence
Yearly T 30-
300
1915-
2010
Yearly x x IML DFO
8. Cold Intermediate Layer - T
Yearly minimum temperature in waters deeper than 100m for the Gulf of St. Lawrence
Yearly T 100-
100
1947-
2005
Yearly x x IML DFO
9. Cold Intermediate Layer - Area
Cold intermediate layer (CIL) area at Bonavista, Flemish Cap, and Seal Island
Yearly A 100-
100
1928-
2007
Yearly x x NAFC DFO
10. Bottom Temperature
Area vs temperature-range distribution of bottom waters in Northern Gulf, Magdalen Shallows and NAFO 4 sub-areas regions
Yearly T A Bottom 1970-
2012
Yearly x x BIO DFO
11. Snow Crab Areal Index
Bottom temperature and area of waters within (-1�C to 3�C) temperature
Yearly T A Bottom 1965-
2012
Yearly x x BIO DFO

Ice

NAME UPDATE FREQ. VAR. CODE DEPTH TIME SERIES TIME SERIES FREQ. CYCLE CYCLE FREQ. INDEX ORIGIN DATA ORIGIN
12. Iceberg count
Annual number of iceberg observations south of 48� Latitude
Yearly Count Surface 1899-
2016
Monthly x x BIO USCG IIP
13. Ice coverage
Monthly Ice Coverage over Scotian Shelf, Newfoundland Shelf, and the Gulf of St. Lawrence
Yearly A Surface 1962-
2012
Weekly x x BIO CIS EC

Freshwater

NAME UPDATE FREQ. VAR. CODE DEPTH TIME SERIES TIME SERIES FREQ. CYCLE CYCLE FREQ. INDEX ORIGIN DATA ORIGIN
14. Freshwater runoff -Hudson
Annual average discharge and seasonal cycle
No Di Surface 1963-
1992
Monthly 1961-
1990
Monthly BIO/ IML DFO
15. Freshwater runoff -St. Lawrence River
Annual average discharge and seasonal cycle
Yearly* Di Surface 1914-
2015
Monthly 1981-
2010
Monthly IML DFO
16. Freshwater runoff -Saint John River
Annual average discharge and seasonal cycle
No Di Surface 1918-
1999
Monthly 1961-
1990
Monthly BIO DFO

Atmospheric

NAME UPDATE FREQ. VAR. CODE DEPTH TIME SERIES TIME SERIES FREQ. CYCLE CYCLE FREQ. INDEX ORIGIN DATA ORIGIN
17. Air Temperature
Monthly mean temperature, annual averages and cycle of air temperature
Yearly AT Surface 1866-
2015
Monthly 1981-
2010
Monthly BIO Weather Office EC / NOAA / DMI
18. North Atlantic Oscillation
Average annual difference in atmospheric pressure between the Iceland low and Azores high
Yearly P Surface 1895-
2016
Yearly x x BIO

Displaying 18 indices out of 18

Variable codes:

A
Area
AT
Air Temperature
Di
Discharge (volume per time units)
LAT
Latitude
MT
Meridional Transport
P
Pressure
RHO
Density
SL
Sea level
SST
Sea Surface Temperature
T
Temperature
WS
Wind Speed
WD
Wind Direction
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