N: 90 S: -60 E: 180 W: -180
Description
NASA Global Land Data Assimilation System Version 2 (GLDAS-2) has three components: GLDAS-2.0, GLDAS-2.1, and GLDAS-2.2. GLDAS-2.0 is forced entirely with the Princeton meteorological forcing input data and provides a temporally consistent series from 1948 through 2014. GLDAS-2.1 is forced with a combination of model and observation data from 2000 to present. GLDAS-2.2 product suites use data assimilation (DA), whereas the GLDAS-2.0 and GLDAS-2.1 products are "open-loop" (i.e., no data assimilation). The choice of forcing data, as well as DA observation source, variable, and scheme, vary for different GLDAS-2.2 products.
GLDAS-2.1 data products are now available in two production streams: one stream is forced with combined forcing data including GPCP version 1.3 (the main production stream), and the other stream is processed without this forcing data (the early production stream). Since the GPCP Version 1.3 data have a 3-4 month latency, the GLDAS-2.1 data products are first created without it, and are designated as Early Products (EPs), with about 1.5 month latency. Once the GPCP Version 1.3 data become available, the GLDAS-2.1 data products are processed in the main production stream and are removed from the Early Products archive.
This data product is for GLDAS-2.1 VIC monthly 1.0 degree data from the main production stream. It was generated through temporal averaging of GLDAS-2.1 3-hourly data simulated with the VIC 4.1.2 Land Surface Model in Land Information System (LIS) Version 7. The data product contains 34 land surface fields from January 2000 to present. The GLDAS-2.1 data are archived and distributed in NetCDF format. The GLDAS-2.1 products supersede their corresponding GLDAS-1 products.
The GLDAS-2.1 simulation started on January 1, 2000 using the conditions from the GLDAS-2.0 simulation. This simulation was forced with National Oceanic and Atmospheric Administration (NOAA)/Global Data Assimilation System (GDAS) atmospheric analysis fields (Derber et al., 1991), the disaggregated Global Precipitation Climatology Project (GPCP) V1.3 Daily Analysis precipitation fields (Adler et al., 2003; Huffman et al., 2001), and the Air Force Weather Agency's AGRicultural METeorological modeling system (AGRMET) radiation fields. The simulation used with GDAS and GPCP only from 2000 to February 2001, followed by addition of AGRMET for March 1, 2001 onwards.
In October 2020, all 3-hourly and monthly GLDAS-2 data were post-processed with the MOD44W MODIS land mask. Previously, some grid boxes over inland water were considered as over land and, thus, had non-missing values. The post-processing corrected this issue and masked out all model output data over inland water; the post-processing did not affect the meteorological forcing variables. More information can be found in the GLDAS-2 README. The MOD44W MODIS land mask is available on the GLDAS Project site.
If you had downloaded the GLDAS data prior to November 2020, please download the data again to receive the post-processed data.
Version Description
Product Summary
Citation
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Documents
READ-ME
GENERAL DOCUMENTATION
IMPORTANT NOTICE
Publications Citing This Dataset
| Title | Year Sort ascending | Author | Topic |
|---|---|---|---|
| The Effects of Planting Structure on Groundwater Depletion and | Jia, Chengru, Sun, Shikun, Liang, Yongshan, Shen, Ruihua, Zhao, Jinfeng, Yin, Yali, Wang, Yubao, Zhao, Xining | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Intensive irrigation buffers groundwater declines in key European breadbasket | Carlson, Grace, Massari, Christian, Rotiroti, Marco, Bonomi, Tullia, Preziosi, Elisabetta, Wilder, Andrew, Whitaker, Destinee, Girotto, Manuela | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Investigating the role of ENSO in groundwater temporal variability across Abu Dhabi Emirate, United Arab Emirates using machine learning algorithms | Alghafli, Khaled, Shi, Xiaogang, Sloan, William, Ali, Awad M. | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Groundwater depletion intensified by irrigation and afforestation in the | Guo, Shuitao, Yao, Yingying, Ji, Qiang, Jin, Huijun, Wang, Taihua, Lancia, Michele, Meng, Xianhong, Zheng, Chunmiao, Yang, Dawen | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff, Terrestrial Water Storage, Ground Water, Glacier Mass Balance/Ice Sheet Mass Balance | |
| Plausibility Criteria for GRACE-Derived Groundwater Storage Changes From | Arifin, A., Shamsudduha, M., Ramdhan, A. M., Rateb, A., Scanlon, B. R., Setiawan, T., Iman, M. I., Husna, A., Taylor, R. G. | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff, Terrestrial Water Storage, Ground Water, Glacier Mass Balance/Ice Sheet Mass Balance | |
| Is groundwater running out in the Western Cape, South Africa? Evaluating | Nenweli, Ritshidze, Watson, Andrew, Brookfield, Andrea, Munch, Zahn, Chow, Reynold | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Understanding the shift in drivers of terrestrial water storage decline | Zhang, Xiao, Wu, Xiong, Mu, Wenping, Zhao, Rong, Ye, Baoying, Bai, Zhongke | Total Surface Precipitation Rate, Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Water budget-based evapotranspiration product captures natural and | Goswami, Shubham, Rajendra Ternikar, Chirag, Kandala, Rajsekhar, Pillai, Netra S, Kumar Yadav, Vivek, Abhishek, Joseph, Jisha, Ghosh, Subimal, Dutt Vishwakarma, Bramha | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff, Vegetation Index, Vegetation Index, Vegetation Cover, Plant Characteristics, Leaf Characteristics, Canopy Characteristics, Albedo, Albedo, Reflectance, Topographic Effects, Digital Elevation/Terrain Model (DEM), Terrain Elevation, Rivers/Streams | |
| Modified flood potential index (MFPI) for flood monitoring in terrestrial water storage depletion basin using GRACE estimates | Jiang, Wei, Ji, Xuan, Li, Yungang, Luo, Xian, Yang, Luyi, Ming, Wenting, Liu, Chang, Yan, Siyi, Yang, Chuanjian, Sun, Cezong | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff, Precipitation, Precipitation Amount, Gravity Anomalies, Gravity | |
| Deriving the Terrestrial Water Storage Anomaly From GRACE Spherical | Zhang, Qingquan, Pan, Yun, Zhang, Chong, Gong, Huili | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff, Ground Water | |
| Contribution of climate change and vegetation restoration to interannual variability of evapotranspiration in the agro-pastoral ecotone in northern China | Li, Xuliang, Xu, Xuefeng, Tian, Wei, Tian, Jie, He, Chansheng | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Continuing Severe Water Shortage in the WaterReceiving Area of the SouthToNorth Water Diversion Eastern Route Project From 2002 to 2020 | Xu, Yuyue, Gun, Zhao, Zhao, Jianwei, Chen, Jianli, Liu, Qing, Cheng, Xing, Sutanudjaja, Edwin H., Wang, Jida, Liu, Hehua, Zhan, Wenfeng | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Quantifying Multi-Source Uncertainties in GRACE-Based Estimates of | Li, Quanzhou, Pan, Yun, Zhang, Chong, Gong, Huili | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Hydrological Droughts of 20172018 Explained by the Bayesian Reconstruction of GRACE (FO) Fields | Mo, Shaoxing, Zhong, Yulong, Forootan, Ehsan, Shi, Xiaoqing, Feng, Wei, Yin, Xin, Wu, Jichun | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Air Temperature, Specific Humidity, Evapotranspiration, Wind Speed, Rain, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Cover, Snow Depth, Snow Water Equivalent, Runoff, Surface Temperature, Humidity, Surface Winds, Precipitation Rate, Soil Heat Budget, Soil Heat Budget, Soil Temperature, Soil Infiltration, Soil Infiltration, Surface Soil Moisture, Root Zone Soil Moisture, Soil Moisture/Water Content, Evaporation, Surface Water, Runoff Rate, Average Flow, Average Flow, Precipitation, Snow/Ice, Snow Melt, Snow/Ice Temperature, Leaf Area Index (LAI), Leaf Area Index (LAI), Canopy Characteristics, Leaf Characteristics, Vegetation Cover, Albedo | |
| Global evaluation of the dry gets drier, and wet gets wetter paradigm from a terrestrial water storage change perspective | Xiong, Jinghua, Guo, Shenglian, Chen, Jie, Yin, Jiabo | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Influence of intensive agriculture and geological heterogeneity on the recharge of an arid aquifer system (SaqRam, Arabian Peninsula) inferred from GRACE ... | Seraphin, Pierre, Goncalves, Julio, Hamelin, Bruno, Stieglitz, Thomas, Deschamps, Pierre | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Calibration of a hydrologic model in data-scarce Alaska using satellite and other gridded products | Schneider, Katie E., Hogue, Terri S. | Longwave Radiation, Shortwave Radiation, Soil Heat Budget, Soil Heat Budget, Soil Temperature, Soil Temperature, Soil Infiltration, Soil Infiltration, Soil Moisture/Water Content, Surface Soil Moisture, Root Zone Soil Moisture, Soil Moisture/Water Content, Evaporation, Surface Water, Runoff Rate, Average Flow, Average Flow, Precipitation, Snow/Ice, Snow Depth, Snow Melt, Snow/Ice Temperature, Leaf Area Index (LAI), Leaf Area Index (LAI), Surface Pressure, Heat Flux, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Solid water melt dominates the increase of total groundwater storage in the Tibetan Plateau | Zou, Yiguang, Kuang, Xingxing, Feng, Yuqing, Jiao, Jiu Jimmy, Liu, Junguo, Wang, Can, Fan, Linfeng, Wang, Qingjing, Chen, Jianxin, Ji, Fang, Yao, Yingying, Zheng, Chunmiao | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff, Ground Water, Precipitation, Precipitation Amount, Soil Heat Budget, Soil Heat Budget, Soil Temperature, Soil Infiltration, Soil Infiltration, Surface Soil Moisture, Root Zone Soil Moisture, Soil Moisture/Water Content, Evaporation, Surface Water, Total Runoff, Average Flow, Average Flow, Snow/Ice, Snow Depth, Snow Melt, Snow/Ice Temperature, Leaf Area Index (LAI), Leaf Area Index (LAI) | |
| Integrating InSAR and deep-learning for modeling and predicting subsidence over the adjacent area of Lake Urmia, Iran | Radman, Ali, Akhoondzadeh, Mehdi, Hosseiny, Benyamin | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff, Total Surface Precipitation Rate, Reflectance | |
| GRACE-based estimates of groundwater variations over North America from 2002 to 2017 | Wang, Hansheng, Xiang, Longwei, Steffen, Holger, Wu, Patrick, Jiang, Liming, Shen, Qiang, Li, Zhen, Hayashi, Masaki | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff, Gravity | |
| Calibration-Free Complementary Relationship Estimates Terrestrial | Ma, Ning, Szilagyi, Jozsef, Zhang, Yongqiang | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| Understanding uncertainty of model-reanalysis soil moisture within Greater Horn of Africa (19822014) | Agutu, N.O., Ndehedehe, C.E., Awange, J.L., Kirimi, F., Mwaniki, M. | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff, Air Temperature, Specific Humidity, Wind Speed, Snow Cover, Snow Depth, Soil Heat Budget, Soil Heat Budget, Soil Temperature, Soil Infiltration, Soil Infiltration, Surface Soil Moisture, Root Zone Soil Moisture, Soil Moisture/Water Content, Evaporation, Surface Water, Runoff Rate, Average Flow, Average Flow, Precipitation, Snow/Ice, Snow Melt, Snow/Ice Temperature, Leaf Area Index (LAI), Leaf Area Index (LAI) | |
| Groundwater Storage Changes Derived from GRACE and GLDAS on Smaller River BasinsA Case Study in Poland | Rzepecka, Zofia, Birylo, Monika | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff | |
| The 2018 Long Rainy Season in Kenya: Hydrological Changes and Correlated | Rateb, Ashraf, Hermas, ElSayed | Surface Pressure, Heat Flux, Longwave Radiation, Shortwave Radiation, Surface Temperature, Humidity, Evapotranspiration, Surface Winds, Rain, Precipitation Rate, Snow, Soil Moisture/Water Content, Soil Temperature, Land Surface Temperature, Snow Water Equivalent, Runoff |
Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor | Offset |
|---|---|---|---|---|---|---|---|
| ACond_tavg | ACond_tavg | m s-1 | float32 | -9999 | N/A | 1 | 0 |
| Albedo_inst | Albedo_inst | 1 | float32 | -9999 | N/A | 1 | 0 |
| AvgSurfT_inst | AvgSurfT_inst | K | float32 | -9999 | N/A | 1 | 0 |
| CanopInt_inst | CanopInt_inst | kg m-2 | float32 | -9999 | N/A | 1 | 0 |
| ECanop_tavg | ECanop_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| ESoil_tavg | ESoil_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| Evap_tavg | Evap_tavg | kg m-2 s-1 | float32 | -9999 | N/A | 1 | 0 |
| lat | lat | degrees_north | float32 | -9999 | N/A | 1 | 0 |
| lon | lon | degrees_east | float32 | -9999 | N/A | 1 | 0 |
| LWdown_f_tavg | LWdown_f_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| Lwnet_tavg | Lwnet_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| Psurf_f_inst | Psurf_f_inst | Pa | float32 | -9999 | N/A | 1 | 0 |
| Qair_f_inst | Qair_f_inst | kg kg-1 | float32 | -9999 | N/A | 1 | 0 |
| Qg_tavg | Qg_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| Qh_tavg | Qh_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| Qle_tavg | Qle_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| Qsb_acc | Qsb_acc | kg m-2 | float32 | -9999 | N/A | 1 | 0 |
| Qsm_acc | Qsm_acc | kg m-2 | float32 | -9999 | N/A | 1 | 0 |
| Qs_acc | Qs_acc | kg m-2 | float32 | -9999 | N/A | 1 | 0 |
| Rainf_f_tavg | Rainf_f_tavg | kg m-2 s-1 | float32 | -9999 | N/A | 1 | 0 |
| Rainf_tavg | Rainf_tavg | kg m-2 s-1 | float32 | -9999 | N/A | 1 | 0 |
| RootMoist_inst | RootMoist_inst | kg m-2 | float32 | -9999 | N/A | 1 | 0 |
| SnowDepth_inst | SnowDepth_inst | m | float32 | -9999 | N/A | 1 | 0 |
| Snowf_tavg | Snowf_tavg | kg m-2 s-1 | float32 | -9999 | N/A | 1 | 0 |
| SoilMoi0_30cm_inst | SoilMoi0_30cm_inst | kg m-2 | float32 | -9999 | N/A | 1 | 0 |
| SoilMoi_depth2_inst | SoilMoi_depth2_inst | kg m-2 | float32 | -9999 | N/A | 1 | 0 |
| SoilMoi_depth3_inst | SoilMoi_depth3_inst | kg m-2 | float32 | -9999 | N/A | 1 | 0 |
| SoilTMP0_30cm_inst | SoilTMP0_30cm_inst | K | float32 | -9999 | N/A | 1 | 0 |
| SoilTMP_depth2_inst | SoilTMP_depth2_inst | K | float32 | -9999 | N/A | 1 | 0 |
| SoilTMP_depth3_inst | SoilTMP_depth3_inst | K | float32 | -9999 | N/A | 1 | 0 |
| SWdown_f_tavg | SWdown_f_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| SWE_inst | SWE_inst | kg m-2 | float32 | -9999 | N/A | 1 | 0 |
| Swnet_tavg | Swnet_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| Tair_f_inst | Tair_f_inst | K | float32 | -9999 | N/A | 1 | 0 |
| time | time | days since 2000-01-01 00:00:00 | float64 | N/A | N/A | N/A | N/A |
| time_bnds | time_bnds | N/A | float64 | N/A | N/A | N/A | N/A |
| TVeg_tavg | TVeg_tavg | W m-2 | float32 | -9999 | N/A | 1 | 0 |
| Wind_f_inst | Wind_f_inst | m s-1 | float32 | -9999 | N/A | 1 | 0 |