MERRA-2 M2T1NXLND: Land Surface Diagnostics V5.12.4

NASA/GSFC/MERRA/lnd/2
Dataset Availability
1980-01-01T00:00:00Z–2024-10-01T23:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NASA/GSFC/MERRA/lnd/2")
Tags
evaporation ice merra temperature

Description

M2T1NXLND (or tavg1_2d_lnd_Nx) is an hourly time-averaged data collection in Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). This collection consists of land surface diagnostics, such a baseflow flux, runoff, surface soil wetness, root zone soil wetness, water at surface layer, water at root zone layer, and soil temperature at six layers. The data field is time-stamped with the central time of an hour starting from 00:30 UTC, e.g.: 00:30, 01:30, ... , 23:30 UTC.

MERRA-2 is the latest version of global atmospheric reanalysis for the satellite era produced by NASA Global Modeling and Assimilation Office (GMAO) using the Goddard Earth Observing System Model (GEOS) version 5.12.4. The dataset covers the period of 1980-present with the latency of ~3 weeks after the end of a month.

Bands

Resolution
69375 meters

Y Resolution
55000 meters

Bands

Name Units Min Max Description
BASEFLOW kg/m^2/s 0* 0.000129*

Baseflow flux
ECHANGE W/m^2 -2930.42* 689.084*

Rate of change of total land energy
EVLAND kg/m^2/s -0.00011* 0.000682*

Evaporation land
EVPINTR W/m^2 -55.2571* 582.82*

Interception loss energy flux
EVPSBLN W/m^2 -310.134* 729.17*

Snow ice evaporation energy flux
EVPSOIL W/m^2 -0.588216* 1217.36*

Baresoil evaporation energy flux
EVPTRNS W/m^2 -0.882528* 1635.84*

Transpiration energy flux
FRSAT 0* 0.983076*

Fractional area of saturated zone
FRSNO 0* 1*

Fractional area of land snowcover
FRUNST 0* 0.999996*

Fractional area of unsaturated zone
FRWLT 0* 1*

Fractional area of wilting zone
GHLAND W/m^2 -245.165* 304.675*

Ground heating land
GRN 0* 0.990087*

Greeness fraction
GWETPROF 0.086402* 0.99997*

Average prof soil moisture
GWETROOT 0.085486* 1*

Root zone soil wetness
GWETTOP 0.010069* 1*

Surface soil wetness
LAI 0* 8.07408*

Leaf area index
LHLAND W/m^2 -308.962* 1682.57*

Latent heat flux land
LWLAND W/m^2 -318.505* 47.5398*

Net longwave land
PARDFLAND W/m^2 0* 277.006*

Surface downwelling photosynthetic active radiation diffuse flux
PARDRLAND W/m^2 0* 441.662*

Surface downwelling par beam flux
PRECSNOLAND kg/m^2/s 0* 0.008119*

Snowfall land
PRECTOTLAND kg/m^2/s 0* 0.110576*

Total precipitation land
PRMC Volume fraction 0.032228* 0.476084*

Water profile
QINFIL kg/m^2/s 0* 0.012518*

Soil water infiltration rate
RUNOFF kg/m^2/s 0* 0.104504*

Overland runoff including throughflow
RZMC Volume fraction 0.031886* 0.478268*

Water root zone
SFMC Volume fraction 0.003945* 0.478*

Water surface layer
SHLAND W/m^2 -1189.34* 768.706*

Sensible heat flux land
SMLAND kg/m^2/s 0* 0.007922*

Snowmelt flux land
SNODP m 0* 9.30012*

Snow depth
SNOMAS kg/m^2 0* 3964.6*

Total snow storage land
SPLAND W/m^2 -71.822* 754.467*

Rate of spurious land energy source
SPSNOW W/m^2 -1287.32* 127.015*

Rate of spurious snow energy
SPWATR kg/m^2/s -0.000305* 2e-06*

Rate of spurious land water source
SWLAND W/m^2 0* 1076.59*

Net shortwave land
TELAND J/m^2 -2.06745e+09* 1.09445e+09*

Total energy storage land
TPSNOW K 207.984* 273.16*

Surface temperature of snow
TSAT K 231.971* 319.16*

Surface temperature of saturated zone
TSOIL1 K 235.694* 326.169*

Soil temperatures layer 1
TSOIL2 K 236.821* 317.313*

Soil temperatures layer 2
TSOIL3 K 238.6* 314.921*

Soil temperatures layer 3
TSOIL4 K 241.158* 313.186*

Soil temperatures layer 4
TSOIL5 K 244.4* 311.295*

Soil temperatures layer 5
TSOIL6 K 249.436* 309.734*

Soil temperatures layer 6
TSURF K 207.984* 341.939*

Surface temperature of land incl snow
TUNST K 231.303* 341.938*

Surface temperature of unsaturated zone
TWLAND kg/m^2 42.9657* 4430.25*

Available water storage land
TWLT K 231.303* 341.939*

Surface temperature of wilted zone
WCHANGE kg/m^2/s -0.001769* 0.012293*

Rate of change of total land water
* estimated min or max value

Terms of Use

Terms of Use

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Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('NASA/GSFC/MERRA/lnd/2')
                  .filter(ee.Filter.date('2022-02-01', '2022-02-02'));
var baseflow_flux = dataset.select('BASEFLOW');
var bfVis = {
  min: -0.00000913,
  max:  0.00001076,
  palette: ['001137', '01abab', 'e7eb05', '620500']
};
Map.setCenter(-95, 39, 2);
Map.addLayer(baseflow_flux, bfVis, 'Baseflow flux');
Open in Code Editor
M2T1NXLND (or tavg1_2d_lnd_Nx) is an hourly time-averaged data collection in Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). This collection consists of land surface diagnostics, such a baseflow flux, runoff, surface soil wetness, root zone soil wetness, water at surface layer, water at root zone layer, and soil …
NASA/GSFC/MERRA/lnd/2, evaporation,ice,merra,temperature
1980-01-01T00:00:00Z/2024-10-01T23:00:00Z
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