Dataset: ESA Sea Surface Temperature Climate Change Initiative (SST_cci): Advanced Very High Resolution Radiometer (AVHRR) Level 3 Collated (L3C) Climate Data Record, version 2.1#

Dataset identifier: esacci.SST.day.L3C.SSTskin.AVHRR-2.NOAA-14.AVHRR14_G.2-1.night
Data store: cciodp

How to open this dataset in AVL JupyterLab  

cciodp_store = new_data_store('cciodp')
ds = cciodp_store.open_data('esacci.SST.day.L3C.SSTskin.AVHRR-2.NOAA-14.AVHRR14_G.2-1.night')

Bounding box map#

Bounding box map
Map tiles and data from OpenStreetMap, under the ODbL.

Basic information#

Parameter Value
Bounding box longitude (°) -180.0 to 180.0
Bounding box latitude (°) -90.0 to 90.0
Time range 1981-08-23 to 2016-12-31
Time period 1D

Click here for full dataset metadata.

Variable list#

Click on a variable name to jump to the variable’s full metadata.

Variable Long name Units
sea_surface_temperature sea surface skin temperature kelvin
sea_surface_temperature_depth sea surface temperature at 0.2 m kelvin
sea_surface_temperature_depth_anomaly sea surface temperature anomaly at 0.2 m kelvin
sst_dtime time difference from reference time seconds
sst_depth_dtime time difference from reference time seconds
sses_bias SSES bias estimate kelvin
sses_standard_deviation SSES standard deviation kelvin
sea_surface_temperature_total_uncertainty Total uncertainty in sea_surface_temperature kelvin
sea_surface_temperature_depth_total_uncertainty Total uncertainty in sea_surface_temperature_depth kelvin
depth_adjustment Adjustment to sea surface temperature at 0.2 m kelvin
adjustment_alt Adjustment to alternative sea surface temperature retrieval kelvin
l2p_flags L2P flags [none]
quality_level quality level of SST pixel [none]
wind_speed 10m wind speed m s-1
sea_surface_temperature_retrieval_type Type of retrieval used for the primary SST [none]
alt_sst_retrieval_type Type of retrieval used for the alternate SST retrieval [none]
uncertainty_random Uncertainty from errors likely to be uncorrelated between SSTs kelvin
uncertainty_correlated Uncertainty from errors likely to be correlated over synoptic scales kelvin
uncertainty_systematic Uncertainty from errors likely to be correlated over large scales kelvin
uncertainty_correlated_time_and_depth_adjustment Time and depth adjustment uncertainty kelvin
uncertainty_random_alt Uncertainty in alternative SST retrieval from errors likely to be uncorrelated between SSTs kelvin
uncertainty_correlated_alt Uncertainty in alternative SST retrieval from errors likely to be correlated over synoptic scales kelvin
uncertainty_systematic_alt Uncertainty in alternative SST retrieval from errors likely to be correlated over large scales kelvin
sst_sensitivity Sensitivity of the retrieval to actual changes in sea surface temperature K/K
empirical_adjustment Adjustment, based on comparison to in situ data kelvin

Full variable metadata#

sea_surface_temperature#

Field Value
long_name sea surface skin temperature
standard_name sea_surface_skin_temperature
units kelvin
add_offset 273.15
scale_factor 0.01
valid_min -200
valid_max 5000
comment Temperature of the skin of the ocean; total uncertainty = sqrt(uncertainty_systematic^2+uncertainty_correlated^2+uncertainty_random^2)
references http://www.esa-sst-cci.org
source AVHRR14_G-ESACCI-L1C-v1
depth 10 micrometres
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

sea_surface_temperature_depth#

Field Value
long_name sea surface temperature at 0.2 m
standard_name sea_water_temperature
units kelvin
add_offset 273.15
scale_factor 0.01
valid_min -200
valid_max 5000
comment Temperature of the ocean at 20 cm depth; total uncertainty = sqrt(uncertainty_systematic^2+uncertainty_correlated^2+uncertainty_random^2+uncertainty_correlated_time_and_depth_adjustment^2)
references http://www.esa-sst-cci.org
source AVHRR14_G-ESACCI-L1C-v1
depth 0.2 metre
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

sea_surface_temperature_depth_anomaly#

Field Value
long_name sea surface temperature anomaly at 0.2 m
standard_name sea_water_temperature_anomaly
units kelvin
add_offset 0.0
scale_factor 0.01
valid_min -4000
valid_max 4000
comment Temperature of the ocean at 20 cm depth; total uncertainty = sqrt(uncertainty_systematic^2+uncertainty_correlated^2+uncertainty_random^2+uncertainty_correlated_time_and_depth_adjustment^2)
references http://www.esa-sst-cci.org
source AVHRR14_G-ESACCI-L1C-v1
depth 0.2 metre
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

sst_dtime#

Field Value
long_name time difference from reference time
units seconds
add_offset 0.0
scale_factor 1.0
valid_min -43200
valid_max 43200
comment time plus sst_dtime gives seconds after 1981-01-01 00:00:00
orig_data_type int32
fill_value -2147483648
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int32
dimensions time, lat, lon
file_dimensions time, lat, lon

sst_depth_dtime#

Field Value
long_name time difference from reference time
units seconds
add_offset 0.0
scale_factor 1.0
valid_min -43200
valid_max 43200
comment time plus sst_depth_dtime gives seconds after 1981-01-01 00:00:00
orig_data_type int32
fill_value -2147483648
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int32
dimensions time, lat, lon
file_dimensions time, lat, lon

sses_bias#

Field Value
_Unsigned false
long_name SSES bias estimate
units kelvin
add_offset 0.0
scale_factor 0.01
valid_min -127
valid_max 127
comment Populated with zeroes
orig_data_type uint8
fill_value -128
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type uint8
dimensions time, lat, lon
file_dimensions time, lat, lon

sses_standard_deviation#

Field Value
_Unsigned false
long_name SSES standard deviation
units kelvin
add_offset 1.27
scale_factor 0.01
valid_min -127
valid_max 127
comment Uncertainty information is contained in the variables uncertainty_systematic, uncertainty_correlated, and uncertainty_random
orig_data_type uint8
fill_value -128
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type uint8
dimensions time, lat, lon
file_dimensions time, lat, lon

sea_surface_temperature_total_uncertainty#

Field Value
long_name Total uncertainty in sea_surface_temperature
units kelvin
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 5000
comment Total uncertainty in each sea_surface_temperature data point
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

sea_surface_temperature_depth_total_uncertainty#

Field Value
long_name Total uncertainty in sea_surface_temperature_depth
units kelvin
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 5000
comment Total uncertainty in each sea_surface_temperature_depth data point
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

depth_adjustment#

Field Value
long_name Adjustment to sea surface temperature at 0.2 m
units kelvin
add_offset 0.0
scale_factor 0.01
valid_min -1000
valid_max 1000
comment Add to sea_surface_temperature, if SST at 20cm at observation time is required
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

adjustment_alt#

Field Value
long_name Adjustment to alternative sea surface temperature retrieval
units kelvin
add_offset 0.0
scale_factor 0.01
valid_min -1000
valid_max 1000
comment Add to sea_surface_temperature, if alternative SST retrieval is required
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

l2p_flags#

Field Value
valid_max 511
flag_meanings microwave land ice lake river spare views channels day
flag_masks 1, 2, 4, 8, 16, 32, 64, 128, 256
comment These flags are important to properly use the data
long_name L2P flags
valid_min 0
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

quality_level#

Field Value
_Unsigned false
long_name quality level of SST pixel
valid_min 0
valid_max 5
flag_meanings no_data bad_data worst_quality low_quality acceptable_quality best_quality
flag_values 0, 1, 2, 3, 4, 5
comment These are overall quality indicators and are used for all GHRSST SSTs
orig_data_type uint8
fill_value 0
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type uint8
dimensions time, lat, lon
file_dimensions time, lat, lon

wind_speed#

Field Value
_Unsigned false
long_name 10m wind speed
standard_name wind_speed
units m s-1
add_offset 12.7
scale_factor 0.1
valid_min -127
valid_max 127
comment Wind speeds sourced from ECMWF ERA Interim Reanalysis; wind speeds greater than 25.4 m/s are set to 25.4.
references http://www.esa-sst-cci.org
source ERA_INTERIM-ECMWF-WSP-v1.0
time_offset 0.0
height 10 m
orig_data_type uint8
fill_value -128
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type uint8
dimensions time, lat, lon
file_dimensions time, lat, lon

sea_surface_temperature_retrieval_type#

Field Value
_Unsigned false
long_name Type of retrieval used for the primary SST
valid_min 1
valid_max 5
comment 1. single view, two channel 2. single view, three channel 3. dual view, two channel 4. dual view, three channel 5. single view, 11 and 3.7 two channel
flag_meanings single_view_two_channel single_view_three_channel dual_view_two_channel dual_view_three_channel single_view_11_and_3.7_two_channel
flag_values 1, 2, 3, 4, 5
orig_data_type uint8
fill_value -128
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type uint8
dimensions time, lat, lon
file_dimensions time, lat, lon

alt_sst_retrieval_type#

Field Value
_Unsigned false
comment For ATSRs, adjustment gives D2 (most consistent through time series) when D3 is provided as best. For AVHRRs, adjustment provides N2 when N3 is best. Reason for providing an alternative: can then use N2 or D2 consistently for whole record i
long_name Type of retrieval used for the alternate SST retrieval
valid_min 1
valid_max 5
flag_meanings single_view_two_channel single_view_three_channel dual_view_two_channel dual_view_three_channel single_view_11_and_3.7_two_channel
flag_values 1, 2, 3, 4, 5
orig_data_type uint8
fill_value -128
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type uint8
dimensions time, lat, lon
file_dimensions time, lat, lon

uncertainty_random#

Field Value
long_name Uncertainty from errors likely to be uncorrelated between SSTs
units kelvin
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 5000
comment Component of uncertainty that is uncorrelated between SSTs; can be combined with other uncertainty estimates to form a total uncertainty
references http://www.esa-sst-cci.org
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

uncertainty_correlated#

Field Value
long_name Uncertainty from errors likely to be correlated over synoptic scales
units kelvin
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 5000
comment Component of uncertainty that is correlated over synoptic scales; can be combined with other uncertainty estimates to form a total uncertainty
correlation_length_scale 100 km
correlation_time_scale 1 day
references http://www.esa-sst-cci.org
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

uncertainty_systematic#

Field Value
long_name Uncertainty from errors likely to be correlated over large scales
units kelvin
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 5000
comment Component of uncertainty that is correlated over large scales; can be combined with other uncertainty estimates to form a total uncertainty
references http://www.esa-sst-cci.org
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

uncertainty_correlated_time_and_depth_adjustment#

Field Value
long_name Time and depth adjustment uncertainty
units kelvin
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 5000
comment Adjustment uncertainty; can be combined with other uncertainty estimates to form a total uncertainty
references http://www.esa-sst-cci.org
correlation_length_scale 100 km
correlation_time_scale 1 day
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

uncertainty_random_alt#

Field Value
long_name Uncertainty in alternative SST retrieval from errors likely to be uncorrelated between SSTs
units kelvin
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 5000
comment Component of uncertainty in alternative SST retrieval that is uncorrelated between SSTs; can be combined with other uncertainty estimates to form a total uncertainty
references http://www.esa-sst-cci.org
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

uncertainty_correlated_alt#

Field Value
long_name Uncertainty in alternative SST retrieval from errors likely to be correlated over synoptic scales
units kelvin
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 5000
comment Component of uncertainty in alternative SST retrieval that is correlated over synoptic scales; can be combined with other uncertainty estimates to form a total uncertainty
correlation_length_scale 100 km
correlation_time_scale 1 day
references http://www.esa-sst-cci.org
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

uncertainty_systematic_alt#

Field Value
long_name Uncertainty in alternative SST retrieval from errors likely to be correlated over large scales
units kelvin
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 5000
comment Component of uncertainty in alternative SST retrieval that is correlated over large scales; can be combined with other uncertainty estimates to form a total uncertainty
references http://www.esa-sst-cci.org
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

sst_sensitivity#

Field Value
long_name Sensitivity of the retrieval to actual changes in sea surface temperature
units K/K
add_offset 0.0
scale_factor 0.001
valid_min 0
valid_max 1100
comment Sensitivity of the retrieval to actual changes in sea surface temperature
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

empirical_adjustment#

Field Value
long_name Adjustment, based on comparison to in situ data
units kelvin
add_offset 0.0
scale_factor 0.01
valid_min -1000
valid_max 1000
comment If not applied, fill with zeros to indicate independence from in situ
orig_data_type int16
fill_value -32768
size 46863360000
shape 1808, 3600, 7200
chunk_sizes 1, 90, 180
file_chunk_sizes 1, 90, 180
data_type int16
dimensions time, lat, lon
file_dimensions time, lat, lon

Full dataset metadata#

Field Value
title ESA Sea Surface Temperature Climate Change Initiative (SST_cci): Advanced Very High Resolution Radiometer (AVHRR) Level 3 Collated (L3C) Climate Data Record, version 2.1
references http://www.esa-sst-cci.org
history created with collate_l3.py
product_version 2-1
uuid 7db4459605da4665b6ab9a7102fb4875
source AVHRR14_G-ESACCI-L1C-v1, ERA_INTERIM-ECMWF-WSP-v1.0
project Climate Change Initiative - European Space Agency
comment For information about uncertainty estimates see the comment attributes to the sea_surface_temperature and sea_surface_temperature_depth variables
processing_level L3C
ecv SST
institute ESACCI_SST
data_type SSTskin
abstract This v2.1 SST_cci Advanced Very High Resolution Radiometer (AVHRR) Level 3 Collated (L3C) Climate Data Record (CDR) consists of stable, low-bias sea surface temperature (SST) data from the AVHRR series of satellite instruments. It covers the period between 08/1981 and 12/2016. This L3C product provides these SST data on a 0.05 regular latitude-longitude grid and collated to include all orbits for a day (separated into daytime and nighttime files). The dataset has been produced as part of the European Space Agency (ESA) Climate Change Initiative Sea Surface Temperature project(ESA SST_cci). The data products from SST_cci accurately map the surface temperature of the global oceans over the period 1981 to 2016 using observations from many satellites. The data provide independently quantified SSTs to a quality suitable for climate research. This CDR Version 2.1 product supercedes the CDR Version 2.0 product. Data are made freely and openly available under a Creative Commons License by Attribution (CC By 4.0) https://creativecommons.org/licenses/by/4.0/ . When citing this dataset please also cite the associated data paper: Merchant, C.J., Embury, O., Bulgin, C.E., Block T., Corlett, G.K., Fiedler, E., Good, S.A., Mittaz, J., Rayner, N.A., Berry, D., Eastwood, S., Taylor, M., Tsushima, Y., Waterfall, A., Wilson, R., Donlon, C. Satellite-based time-series of sea-surface temperature since 1981 for climate applications, Scientific Data 6:223 (2019). http://doi.org/10.1038/s41597-019-0236-x
publication_date 2019-08-02T20:01:15
catalog_url https://catalogue.ceda.ac.uk/uuid/7db4459605da4665b6ab9a7102fb4875
sensor_id AVHRR-2
platform_id NOAA-14
product_string AVHRR14_G
cci_project SST