MERRA-2 M2T1NXSLV: Single-Level Diagnostics V5.12.4

Page Summary

• The dataset covers a wide range of meteorological diagnostics at various vertical levels, including temperature, wind, and pressure.

• Data is available hourly from 1980 to 2025 and is provided by NASA/MERRA.

• This dataset is part of the MERRA-2 global atmospheric reanalysis product.

• The data is intended for research, education, and non-profit use through the Earth Engine platform.

Dataset Availability

1980-01-01T00:00:00Z–2026-02-01T23:00:00Z

Dataset Producer

NASA/MERRA

Earth Engine Snippet

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

Cadence

1 Hour

Tags

atmosphere climate humidity merra nasa pressure temperature vapor water water-vapor wind

condensation

omega

slv

Description

M2T1NXSLV (or tavg1_2d_slv_Nx) is an hourly time-averaged 2-dimensional data collection in Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). This collection consists of meteorology diagnostics at popularly used vertical levels, such as air temperature at 2-meter (or at 10-meter, 850hPa, 500 hPa, 250hPa), wind components at 50-meter (or at 2-meter, 10-meter, 850 hPa, 500hPa, 250 hPa), sea level pressure, surface pressure, and total precipitable water vapor (or ice water, liquid water). 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

Bands

Pixel size: 69375x55000 meters (all bands)

Name	Units	Pixel Size	Description
CLDPRS	Pa	69375x55000 meters	Cloud top pressure
CLDTMP	K	69375x55000 meters	Cloud top temperature
DISPH	m	69375x55000 meters	Zero plane displacement height
H1000	m	69375x55000 meters	Height at 1000 mb
H250	m	69375x55000 meters	Height at 250 hPa
H500	m	69375x55000 meters	Height at 500 hPa
H850	m	69375x55000 meters	Height at 850 hPa
OMEGA500	Pa/s	69375x55000 meters	Omega at 500 hPa
PBLTOP	Pa	69375x55000 meters	Pbltop pressure
PS	Pa	69375x55000 meters	Surface pressure
Q250	Mass fraction	69375x55000 meters	Specific humidity at 250 hPa
Q500	Mass fraction	69375x55000 meters	Specific humidity at 500 hPa
Q850	Mass fraction	69375x55000 meters	Specific humidity at 850 hPa
QV10M	Mass fraction	69375x55000 meters	10-meter specific humidity
QV2M	Mass fraction	69375x55000 meters	2-meter specific humidity
SLP	Pa	69375x55000 meters	Sea level pressure
T10M	K	69375x55000 meters	10-meter air temperature
T250	K	69375x55000 meters	Air temperature at 250 hPa
T2MDEW	K	69375x55000 meters	Dew point temperature at 2 m
T2MWET	K	69375x55000 meters	Wet bulb temperature at 2 m
T2M	K	69375x55000 meters	2-meter air temperature
T500	K	69375x55000 meters	Air temperature at 500 hPa
T850	K	69375x55000 meters	Air temperature at 850 hPa
TO3	Dobson	69375x55000 meters	Total column ozone
TOX	kg/m^2	69375x55000 meters	Total column odd oxygen
TQI	kg/m^2	69375x55000 meters	Total precipitable ice water
TQL	kg/m^2	69375x55000 meters	Total precipitable liquid water
TQV	kg/m^2	69375x55000 meters	Total precipitable water vapor
TROPPB	Pa	69375x55000 meters	Tropopause pressure (TROPP) based on blended estimate
TROPPT	Pa	69375x55000 meters	Tropopause pressure based on thermal estimate
TROPPV	Pa	69375x55000 meters	Tropopause pressure based on epv estimate
TROPQ	Mass fraction	69375x55000 meters	Tropopause specific humidity using blended tropp (TROPPB) estimate
TROPT	K	69375x55000 meters	Tropopause temperature using blended tropp estimate
TS	K	69375x55000 meters	Surface skin temperature
U10M	m/s	69375x55000 meters	10-meter eastward wind
U250	m/s	69375x55000 meters	Eastward wind at 250 hPa
U2M	m/s	69375x55000 meters	2-meter eastward wind
U500	m/s	69375x55000 meters	Eastward wind at 500 hPa
U50M	m/s	69375x55000 meters	Eastward wind at 50 meters
U850	m/s	69375x55000 meters	Eastward wind at 850 hPa
V10M	m/s	69375x55000 meters	10-meter northward wind
V250	m/s	69375x55000 meters	Northward wind at 250 hPa
V2M	m/s	69375x55000 meters	2-meter northward wind
V500	m/s	69375x55000 meters	Northward wind at 500 hPa
V50M	m/s	69375x55000 meters	Northward wind at 50 meters
V850	m/s	69375x55000 meters	Northward wind at 850 hPa
ZLCL	m	69375x55000 meters	Lifting condensation level

Terms of Use

Terms of Use

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Explore with Earth Engine

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Code Editor (JavaScript)

var dataset = ee.ImageCollection('NASA/GSFC/MERRA/slv/2')
                  .filter(ee.Filter.date('2022-02-01', '2022-02-02'));
var surface_pressure = dataset.select('PS');
var surface_pressure_vis = {
  min: 81100,
  max: 117000,
  palette: ['001137', '01abab', 'e7eb05', '620500']
};
Map.setCenter(-95.62, 39.91, 2);
Map.addLayer(surface_pressure, surface_pressure_vis);

Open in Code Editor

MERRA-2 M2T1NXSLV: Single-Level Diagnostics V5.12.4

M2T1NXSLV (or tavg1_2d_slv_Nx) is an hourly time-averaged 2-dimensional data collection in Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). This collection consists of meteorology diagnostics at popularly used vertical levels, such as air temperature at 2-meter (or at 10-meter, 850hPa, 500 hPa, 250hPa), wind components at 50-meter (or …

NASA/GSFC/MERRA/slv/2, atmosphere,climate,humidity,merra,nasa,pressure,temperature,vapor,water,water-vapor,wind

1980-01-01T00:00:00Z/2026-02-01T23:00:00Z

-90 -180 90 180

Google Earth Engine

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