Citation:

PANGAEA.949792

Name: Harmonized in-situ observations of surface energy fluxes and environmental drivers at 64 Arctic vegetation and glacier sites - Environmental conditions
Published: 2022-10-18
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Arctic; dry tundra; Eddy covariance; eddy heat flux; glacier; graminoids; ground heat flux and net radiation; harmonized data; high latitude; Land-Atmosphere; Land-cover; latent and sensible heat; latent heat flux; longwave radiation; meteorological data; observatory data; Peat bog; Radiation fluxes; Radiative energy budget; sensible heat flux; shortwave radiation; shrub tundra; surface energy balance; synthetic data; tundra vegetation; wetland

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Abstract:

Despite the importance of surface energy budgets (SEBs) for land-climate interactions in the Arctic, uncertainties in their prediction persist. In situ observational data of SEB components - useful for research and model validation - are collected at relatively few sites across the terrestrial Arctic, and not all available datasets are readily interoperable. Furthermore, the terrestrial Arctic consists of a diversity of vegetation types, which are generally not well represented in land surface schemes of current Earth system models.

This dataset describes the environmental conditions for 64 tundra and glacier sites (>=60°N latitude) across the Arctic, for which in situ measurements of surface energy budget components were harmonized (see Oehri et al. 2022). These environmental conditions are (proxies of) potential drivers of SEB-components and could therefore be called SEB-drivers. The associated environmental conditions, include the vegetation types graminoid tundra, prostrate dwarf-shrub tundra, erect-shrub tundra, wetland complexes, barren complexes (≤ 40% horizontal plant cover), boreal peat bogs and glacier. These land surface types (apart from boreal peat bogs) correspond to the main classification units of the Circumpolar Arctic Vegetation Map (CAVM, Raynolds et al. 2019). For each site, additional climatic and biophysical variables are available, including cloud cover, snow cover duration, permafrost characteristics, climatic conditions and topographic conditions.

Keyword(s):

Arctic; dry tundra; Eddy covariance; eddy heat flux; glacier; graminoids; ground heat flux and net radiation; harmonized data; high latitude; Land-Atmosphere; Land-cover; latent and sensible heat; latent heat flux; longwave radiation; meteorological data; observatory data; Peat bog; Radiation fluxes; Radiative energy budget; sensible heat flux; shortwave radiation; shrub tundra; surface energy balance; synthetic data; tundra vegetation; wetland

Further details:

ReadMe - ArcticSEB_2022_Env

Raynolds, Martha K; Walker, Donald A; Balser, Andrew; Bay, Christian; Campbell, Mitch; Cherosov, Mikhail M; Daniëls, Frederikus J A; Eidesen, Pernille Bronken; Ermokhina, Ksenia A; Frost, Gerald V; Jedrzejek, Birgit; Jorgenson, M Torre; Kennedy, Blair E; Kholod, Sergei S; Lavrinenko, Igor A; Lavrinenko, Olga V; Magnússon, Borgþór; Matveyeva, Nadezhda V; Metúsalemsson, Sigmar; Nilsen, Lennart; Pospelov, Igor N; Pospelova, Vera; Pouliot, Darren; Razzhivin, Vladimir; Schaepman-Strub, Gabriela; Šibík, Jozef; Telyatnikov, Mikhail Yu; Troeva, Elena I (2019): A raster version of the Circumpolar Arctic Vegetation Map (CAVM). Remote Sensing of Environment, 232, 111297, https://doi.org/10.1016/j.rse.2019.111297

Project(s):

Arctic Tundra Surface Energy Budget (ArcticTundraSEB)

Funding:

Universität Zürich (UZH), grant/award no. 178753

Coverage:

Median Latitude: 69.281003 * Median Longitude: -56.111532 * South-bound Latitude: 61.030800 * West-bound Longitude: -157.408900 * North-bound Latitude: 79.910800 * East-bound Longitude: 161.341430

Date/Time Start: 1994-01-01T00:00:00 * Date/Time End: 2022-01-01T00:00:00

Minimum ELEVATION: 0.2 m a.s.l. * Maximum ELEVATION: 3249.0 m a.s.l.

Event(s):

Arctic_SEB_CA-SCB * Latitude: 61.308900 * Longitude: -121.298400 * Date/Time Start: 2014-01-01T00:00:00 * Date/Time End: 2017-12-31T00:00:00 * Elevation: 269.7 m * Method/Device: Field observation

Arctic_SEB_CP1 * Latitude: 69.879750 * Longitude: -46.986670 * Date/Time Start: 1998-01-01T00:00:00 * Date/Time End: 2017-12-31T00:00:00 * Elevation: 2002.9 m * Method/Device: Field observation

Arctic_SEB_Dye-2 * Latitude: 66.480010 * Longitude: -46.278890 * Date/Time Start: 1998-01-01T00:00:00 * Date/Time End: 2017-12-31T00:00:00 * Elevation: 2160.4 m * Method/Device: Field observation

Comment:

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Oehri, Jacqueline
2	Type of study	Study type		Oehri, Jacqueline
3	LATITUDE	Latitude		Oehri, Jacqueline		Geocode
4	LONGITUDE	Longitude		Oehri, Jacqueline		Geocode
5	Date/Time of event	Date/Time		Oehri, Jacqueline
6	ELEVATION	Elevation	m a.s.l.	Oehri, Jacqueline		Geocode – at Location ID; from ArcticDEM
7	Location ID	Loc ID		Oehri, Jacqueline		network-specific site identifier
8	Data source	Data source		Oehri, Jacqueline		network/repository
9	Vegetation type	Vegetation type		Oehri, Jacqueline		from in-situ site descriptions
10	Vegetation type	Vegetation type		Oehri, Jacqueline		from in-situ site descriptions; with number code
11	Vegetation type	Vegetation type		Oehri, Jacqueline		dominant vegetation type within 500m radius; from CAVM raster
12	Vegetation type	Vegetation type		Oehri, Jacqueline		dominant vegetation type within 500m radius with number code; from CAVM raster
13	Vegetation type	Vegetation type		Oehri, Jacqueline		weight of dominant CAVM vegetation type within 500m radius (range: 0-1; 1=full occupation).
14	Vegetation type	Vegetation type		Oehri, Jacqueline		vegetation type for specific study location; from CAVM raster (with no regard of dominant CAVM type)
15	Land cover type	LC type		Oehri, Jacqueline		described by data repository []
16	Land cover classes	LCC		Oehri, Jacqueline		land-cover type classification scheme; IGBP=International Geosphere-Biosphere Programme
17	Species present	Spec present		Oehri, Jacqueline		plant species present at specific sites; from in situ descriptions
18	Vegetation type	Vegetation type		Oehri, Jacqueline		vegetation types present within 500m radius; from CAVM raster
19	Number of vegetation types	N veg types	#	Oehri, Jacqueline		within 500m radius; from CAVM raster
20	Shannon Diversity Index	H'		Oehri, Jacqueline		from CAVM raster
21	Shannon Diversity Index, maximum	H' max		Oehri, Jacqueline		from CAVM raster []
22	Zone	Zone		Oehri, Jacqueline		A=coldest, E=warmest
23	Permafrost, type	Permafrost type		Oehri, Jacqueline		permafrost-ground ice-landform type
24	Permafrost, type	Permafrost type		Oehri, Jacqueline		aggregated in main types
25	Permafrost extent	Permafrost ext		Oehri, Jacqueline		aggregated in main types
26	Permafrost ice content, description	Permafrost ice cont descr		Oehri, Jacqueline
27	Precipitation	Precip	mm/day	Oehri, Jacqueline	Daily mean
28	Precipitation, daily, maximum	Precip day max	mm/day	Oehri, Jacqueline	Daily maximum	Average for each Location ID
29	Humidity, relative	RH	%	Oehri, Jacqueline	Daily mean	Average for each Location ID
30	Wind speed	ff	m/s	Oehri, Jacqueline	Daily mean
31	Vapour pressure deficit	VPD	hPa	Oehri, Jacqueline	Daily mean	Average for each Location ID
32	Pressure, atmospheric	PPPP	hPa	Oehri, Jacqueline	Daily mean	Average for each Location ID
33	Soil water content, volumetric	vol SWC	%	Oehri, Jacqueline	Daily mean	Average for each Location ID
34	Slope	Slope	deg	Oehri, Jacqueline		at Location ID; from ArcticDEM
35	Aspect	Aspect	arbitrary units	Oehri, Jacqueline		Northness; 1=north-exposed, -1=south-exposed; at Location ID; from ArcticDEM
36	Aspect	Aspect	arbitrary units	Oehri, Jacqueline		Eastness; 1=east-exposed, -1=west-exposed; at Location ID; from ArcticDEM
37	ELEVATION	Elevation	m a.s.l.	Oehri, Jacqueline	Mean values	Geocode – mean; within 500m radius; from ArcticDEM
38	ELEVATION	Elevation	m a.s.l.	Oehri, Jacqueline	Median values	Geocode – median; within 500m radius; from ArcticDEM
39	Elevation, standard deviation	Elev std dev	±	Oehri, Jacqueline		within 500m radius; from ArcticDEM
40	Slope	Slope	deg	Oehri, Jacqueline	Calculated average/mean values	within 500m radius; from ArcticDEM
41	Slope, coefficient of variation	Slope CV		Oehri, Jacqueline		within 500m radius; from ArcticDEM
42	Aspect	Aspect	arbitrary units	Oehri, Jacqueline		Northness; 1=north-exposed, -1=south-exposed; within 500m radius; from ArcticDEM
43	Aspect, coefficient of variation	Aspect CV		Oehri, Jacqueline		Northness; within 500m radius; from ArcticDEM
44	Aspect	Aspect	arbitrary units	Oehri, Jacqueline		Eastness; 1=east-exposed, -1=west-exposed; within 500m radius; from ArcticDEM
45	Aspect, coefficient of variation	Aspect CV		Oehri, Jacqueline		Eastness; within 500m radius; from ArcticDEM
46	Precipitation, sum	Precip sum	mm	Oehri, Jacqueline		annual sum; averaged from 1979-2018
47	Precipitation, coefficient of variation	Precip CV		Oehri, Jacqueline		of annual sum; from 1979-2018
48	Slope, mathematical	Slope math		Oehri, Jacqueline		change of precipitation (mm/year) estimated from linear model; from 1979-2018
49	Precipitation, snow	Snow	mm	Oehri, Jacqueline		annual sum; averaged from 1979-2018
50	Snowfall, coefficient of variation	Snowfall CV		Oehri, Jacqueline		of annual sum; from 1979-2018
51	Slope, mathematical	Slope math		Oehri, Jacqueline		change of snowfall (mm/year) estimated from linear model; from 1979-2018
52	Temperature, air, annual mean	MAAT	°C	Oehri, Jacqueline		averaged from 1979-2018
53	Temperature, air, coefficient of variation	T air CV		Oehri, Jacqueline		of annual sum; from 1979-2018
54	Slope, mathematical	Slope math		Oehri, Jacqueline		change of air temperature (°C/year) estimated from linear model; from 1979-2018
55	Summer warmth index	SWI	°C	Oehri, Jacqueline		annual sum of monthly mean temperatures above 0°C; averaged from 1979-2018
56	Conrad's continentality index	Conrad cont index		Oehri, Jacqueline		derived from Summer warmth index; averaged from 1979-2018
57	Temperature, annual mean range	MART	°C	Oehri, Jacqueline		averaged from 1979-2018
58	Cloud cover	Cloud cov	%	Oehri, Jacqueline		averaged from 1984-2016
59	Cloud cover, standard deviation	Cloud cov std dev	±	Oehri, Jacqueline		averaged from 1984-2016
60	Slope, mathematical	Slope math		Oehri, Jacqueline		change of cloud cover (%/year) estimated from linear model; from 1984-2016
61	Cloud cover	Cloud cov	%	Oehri, Jacqueline		deteced by infrared; averaged from 1984-2016
62	Cloud cover, standard deviation	Cloud cov std dev	±	Oehri, Jacqueline		deteced by infrared; averaged from 1984-2016
63	Slope, mathematical	Slope math		Oehri, Jacqueline		change of cloud cover (%/year) estimated from linear model; deteced by infrared; averaged from 1984-2016
64	Cloud top pressure	Cloud top press	hPa	Oehri, Jacqueline		averaged from 1984-2016
65	Cloud top pressure, standard deviation	Cloud top press std dev	±	Oehri, Jacqueline		averaged from 1984-2016
66	Slope, mathematical	Slope math		Oehri, Jacqueline		change of cloud top pressure (hPa/year) estimated from linear model; averaged from 1984-2016
67	Cloud top pressure	Cloud top press	hPa	Oehri, Jacqueline		deteced by infrared; averaged from 1984-2016
68	Cloud top pressure, standard deviation	Cloud top press std dev	±	Oehri, Jacqueline		deteced by infrared; averaged from 1984-2016
69	Slope, mathematical	Slope math		Oehri, Jacqueline		change of cloud top pressure (hPa/year) estimated from linear model; deteced by infrared; averaged from 1984-2016
70	Cloud top temperature	Cloud top T	°C	Oehri, Jacqueline		averaged from 1984-2016
71	Cloud top temperature, standard deviation	Cloud top T std dev	±	Oehri, Jacqueline		averaged from 1984-2016
72	Slope, mathematical	Slope math		Oehri, Jacqueline		change of cloud top temperature (°C/year) estimated from linear model; averaged from 1984-2016
73	Cloud top temperature	Cloud top T	°C	Oehri, Jacqueline		deteced by infrared; averaged from 1984-2016
74	Cloud top temperature, standard deviation	Cloud top T std dev	±	Oehri, Jacqueline		deteced by infrared; averaged from 1984-2016
75	Slope, mathematical	Slope math		Oehri, Jacqueline		change of cloud top temperature(°C/year) estimated from linear model; deteced by infrared; averaged from 1984-2016
76	Snow type	Snow		Oehri, Jacqueline
77	Snow cover, number of days	Snow cov num days	days	Oehri, Jacqueline	Median values	from 2000-2020
78	Slope, mathematical	Slope math		Oehri, Jacqueline		change of snow cover (days/year) estimated from linear model; from 2000-2020
79	p-value	p-value		Oehri, Jacqueline		for slope of snow cover; from 2000-2020
80	Snow-free days	Snow-free days	days	Oehri, Jacqueline	Median values	from 2000-2020
81	Slope, mathematical	Slope math		Oehri, Jacqueline		change of snow-free days (days/year) estimated from linear model; from 2000-2020
82	p-value	p-value		Oehri, Jacqueline		for slope of snow-free days; from 2000-2020
83	Snow, onset, day of the year	Snow onset day of year	day	Oehri, Jacqueline	Median values	from 2000-2020
84	Slope, mathematical	Slope math		Oehri, Jacqueline		change of snow onset (day of year/year) estimated from linear model; from 2000-2020
85	p-value	p-value		Oehri, Jacqueline		for slope of snow onset; from 2000-2020
86	Site	Site		Oehri, Jacqueline		study-site ID
87	Uniform resource locator/link to reference	URL ref		Oehri, Jacqueline		#1 information about the specific study site
88	Reference/source	Reference		Oehri, Jacqueline		#2 more information about the specific study site
89	Land cover classes	LCC		Oehri, Jacqueline		from CERES Surface Type IDs

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

4705 data points

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