MERRA-2 M2T1NXLND: Land Surface Diagnostics V5.12.4

Dataset Availability

1980-01-01T00:00:00Z–2025-07-01T23:00:00Z

Dataset Provider

NASA/MERRA

Earth Engine Snippet

ee.ImageCollection("NASA/GSFC/MERRA/lnd/2")

Cadence

1 Hour

Tags

climate cryosphere evaporation ice merra precipitation soil temperature water-vapor

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

Pixel Size
69375 meters

Y Pixel Size
55000 meters

Bands

Name	Units	Min	Max	Pixel Size	Description
BASEFLOW	kg/m^2/s	0*	0.000129*	meters	Baseflow flux
ECHANGE	W/m^2	-2930.42*	689.084*	meters	Rate of change of total land energy
EVLAND	kg/m^2/s	-0.00011*	0.000682*	meters	Evaporation land
EVPINTR	W/m^2	-55.2571*	582.82*	meters	Interception loss energy flux
EVPSBLN	W/m^2	-310.134*	729.17*	meters	Snow ice evaporation energy flux
EVPSOIL	W/m^2	-0.588216*	1217.36*	meters	Baresoil evaporation energy flux
EVPTRNS	W/m^2	-0.882528*	1635.84*	meters	Transpiration energy flux
FRSAT		0*	0.983076*	meters	Fractional area of saturated zone
FRSNO		0*	1*	meters	Fractional area of land snowcover
FRUNST		0*	0.999996*	meters	Fractional area of unsaturated zone
FRWLT		0*	1*	meters	Fractional area of wilting zone
GHLAND	W/m^2	-245.165*	304.675*	meters	Ground heating land
GRN		0*	0.990087*	meters	Greeness fraction
GWETPROF		0.086402*	0.99997*	meters	Average prof soil moisture
GWETROOT		0.085486*	1*	meters	Root zone soil wetness
GWETTOP		0.010069*	1*	meters	Surface soil wetness
LAI		0*	8.07408*	meters	Leaf area index
LHLAND	W/m^2	-308.962*	1682.57*	meters	Latent heat flux land
LWLAND	W/m^2	-318.505*	47.5398*	meters	Net longwave land
PARDFLAND	W/m^2	0*	277.006*	meters	Surface downwelling photosynthetic active radiation diffuse flux
PARDRLAND	W/m^2	0*	441.662*	meters	Surface downwelling par beam flux
PRECSNOLAND	kg/m^2/s	0*	0.008119*	meters	Snowfall land
PRECTOTLAND	kg/m^2/s	0*	0.110576*	meters	Total precipitation land
PRMC	Volume fraction	0.032228*	0.476084*	meters	Water profile
QINFIL	kg/m^2/s	0*	0.012518*	meters	Soil water infiltration rate
RUNOFF	kg/m^2/s	0*	0.104504*	meters	Overland runoff including throughflow
RZMC	Volume fraction	0.031886*	0.478268*	meters	Water root zone
SFMC	Volume fraction	0.003945*	0.478*	meters	Water surface layer
SHLAND	W/m^2	-1189.34*	768.706*	meters	Sensible heat flux land
SMLAND	kg/m^2/s	0*	0.007922*	meters	Snowmelt flux land
SNODP	m	0*	9.30012*	meters	Snow depth
SNOMAS	kg/m^2	0*	3964.6*	meters	Total snow storage land
SPLAND	W/m^2	-71.822*	754.467*	meters	Rate of spurious land energy source
SPSNOW	W/m^2	-1287.32*	127.015*	meters	Rate of spurious snow energy
SPWATR	kg/m^2/s	-0.000305*	2e-06*	meters	Rate of spurious land water source
SWLAND	W/m^2	0*	1076.59*	meters	Net shortwave land
TELAND	J/m^2	-2.06745e+09*	1.09445e+09*	meters	Total energy storage land
TPSNOW	K	207.984*	273.16*	meters	Surface temperature of snow
TSAT	K	231.971*	319.16*	meters	Surface temperature of saturated zone
TSOIL1	K	235.694*	326.169*	meters	Soil temperatures layer 1
TSOIL2	K	236.821*	317.313*	meters	Soil temperatures layer 2
TSOIL3	K	238.6*	314.921*	meters	Soil temperatures layer 3
TSOIL4	K	241.158*	313.186*	meters	Soil temperatures layer 4
TSOIL5	K	244.4*	311.295*	meters	Soil temperatures layer 5
TSOIL6	K	249.436*	309.734*	meters	Soil temperatures layer 6
TSURF	K	207.984*	341.939*	meters	Surface temperature of land incl snow
TUNST	K	231.303*	341.938*	meters	Surface temperature of unsaturated zone
TWLAND	kg/m^2	42.9657*	4430.25*	meters	Available water storage land
TWLT	K	231.303*	341.939*	meters	Surface temperature of wilted zone
WCHANGE	kg/m^2/s	-0.001769*	0.012293*	meters	Rate of change of total land water

* estimated min or max value

Terms of Use

Terms of Use

NASA promotes the full and open sharing of all data with research and applications communities, private industry, academia, and the general public.

Explore with Earth Engine

Important: Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please register for Earth Engine access.

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

MERRA-2 M2T1NXLND: Land Surface Diagnostics V5.12.4

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, climate,cryosphere,evaporation,ice,merra,precipitation,soil,temperature,water-vapor

1980-01-01T00:00:00Z/2025-07-01T23:00:00Z

-90 -180 90 180

Google Earth Engine

https://developers.google.com/earth-engine/datasets