محصول MYD11A1 V6.1 دمای روزانه سطح زمین (LST) و مقادیر انتشار را در یک شبکه 1200×1200 کیلومتری ارائه می کند. مقدار دما از محصول swath MYD11_L2 مشتق شده است. در بالای 30 درجه عرض جغرافیایی، برخی از پیکسل ها ممکن است مشاهدات متعددی داشته باشند که در آن معیارهای آسمان صاف رعایت می شود. هنگامی که این اتفاق می افتد، مقدار پیکسل میانگین تمام مشاهدات واجد شرایط است. همراه با هر دو باند دمای سطح روز و شب و لایه های نشانگر کیفیت آنها، نوارهای MODIS 31 و 32 و شش لایه مشاهده ارائه شده است.
محصول MYD11A1 V6.1 دمای روزانه سطح زمین (LST) و مقادیر انتشار را در یک شبکه 1200×1200 کیلومتری ارائه می کند. مقدار دما از محصول swath MYD11_L2 مشتق شده است. در بالای 30 درجه عرض جغرافیایی، برخی از پیکسل ها ممکن است مشاهدات متعددی داشته باشند که در آن معیارهای آسمان صاف رعایت می شود. وقتی این اتفاق می افتد،…
MODIS/061/MYD11A1، آب، آب و هوا، روزانه، انتشار، جهانی، lst، modis، nasa، دمای سطح، usgs
[null,null,[],[[["\u003cp\u003eMYD11A1 V6.1 provides daily land surface temperature (LST) and emissivity values at a 1km resolution.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers the globe from 2002-07-04 to 2024-12-10 and is derived from the MODIS instrument on the Aqua satellite.\u003c/p\u003e\n"],["\u003cp\u003eIt includes daytime and nighttime LST, quality indicators, observation times, view angles, and emissivity bands.\u003c/p\u003e\n"],["\u003cp\u003eUsers can access the data through Google Earth Engine and NASA's LP DAAC.\u003c/p\u003e\n"],["\u003cp\u003eThe data is freely available for use, sale, and redistribution.\u003c/p\u003e\n"]]],["The MYD11A1 V6.1 dataset from NASA LP DAAC offers daily land surface temperature (LST) and emissivity data globally, from July 4, 2002, to February 18, 2025. Data is available in a 1200x1200 km grid at 1km pixel size, including daytime and nighttime temperatures with quality indicators. It includes derived values from MODIS bands 31 and 32 and six observation layers. Users can access and visualize this data through Google Earth Engine.\n"],null,["# MYD11A1.061 Aqua Land Surface Temperature and Emissivity Daily Global 1km\n\nDataset Availability\n: 2002-07-04T00:00:00Z--2025-08-17T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/MODIS/MOD11A1.061)\n\nCadence\n: 1 Day\n\nTags\n:\n [aqua](/earth-engine/datasets/tags/aqua) [climate](/earth-engine/datasets/tags/climate) [daily](/earth-engine/datasets/tags/daily) [emissivity](/earth-engine/datasets/tags/emissivity) [global](/earth-engine/datasets/tags/global) [lst](/earth-engine/datasets/tags/lst) [modis](/earth-engine/datasets/tags/modis) [nasa](/earth-engine/datasets/tags/nasa) [surface-temperature](/earth-engine/datasets/tags/surface-temperature) [usgs](/earth-engine/datasets/tags/usgs) \nmyd11a1 \n\n#### Description\n\nThe MYD11A1 V6.1 product provides daily land surface temperature\n(LST) and emissivity values in a 1200 x 1200 kilometer grid. The\ntemperature value is derived from the MYD11_L2 swath product. Above\n30 degrees latitude, some pixels may have multiple observations\nwhere the criteria for clear-sky are met. When this occurs, the\npixel value is the average of all qualifying observations. Provided\nalong with both the day-time and night-time surface temperature\nbands and their quality indicator layers are MODIS bands 31 and\n32 and six observation layers.\n\nDocumentation:\n\n- [User's Guide](https://lpdaac.usgs.gov/documents/118/MOD11_User_Guide_V6.pdf)\n\n- [Algorithm Theoretical Basis Document (ATBD)](https://lpdaac.usgs.gov/documents/119/MOD11_ATBD.pdf)\n\n- [General Documentation](https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/61/MYD11A1)\n\n### Bands\n\n\n**Pixel Size**\n\n1000 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Scale | Offset | Pixel Size | Description |\n|--------------------|-------|------|-------|--------|--------|------------|----------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `LST_Day_1km` | K | 7500 | 65535 | 0.02 | | meters | Daytime Land Surface Temperature |\n| `QC_Day` | | | | | | meters | Daytime LST Quality Indicators |\n| Bitmask for QC_Day - Bits 0-1: Mandatory QA flags - 0: LST produced, good quality, not necessary to examine more detailed QA - 1: LST produced, other quality, recommend examination of more detailed QA - 2: LST not produced due to cloud effects - 3: LST not produced primarily due to reasons other than cloud - Bits 2-3: Data quality flag - 0: Good data quality - 1: Other quality data - 2: TBD - 3: TBD - Bits 4-5: Emissivity error flag - 0: Average emissivity error \\\u003c= 0.01 - 1: Average emissivity error \\\u003c= 0.02 - 2: Average emissivity error \\\u003c= 0.04 - 3: Average emissivity error \\\u003e 0.04 - Bits 6-7: LST error flag - 0: Average LST error \\\u003c= 1K - 1: Average LST error \\\u003c= 2K - 2: Average LST error \\\u003c= 3K - 3: Average LST error \\\u003e 3K ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `Day_view_time` | h | 0 | 240 | 0.1 | | meters | Local time of day observation |\n| `Day_view_angle` | deg | 0 | 130 | | -65 | meters | View zenith angle of day observation |\n| `LST_Night_1km` | K | 7500 | 65535 | 0.02 | | meters | Nighttime Land Surface Temperature |\n| `QC_Night` | | | | | | meters | Nighttime LST Quality indicators |\n| Bitmask for QC_Night - Bits 0-1: Mandatory QA flags - 0: LST produced, good quality, not necessary to examine more detailed QA - 1: LST produced, other quality, recommend examination of more detailed QA - 2: LST not produced due to cloud effects - 3: LST not produced primarily due to reasons other than cloud - Bits 2-3: Data quality flag - 0: Good data quality - 1: Other quality data - 2: TBD - 3: TBD - Bits 4-5: Emissivity error flag - 0: Average emissivity error \\\u003c= 0.01 - 1: Average emissivity error \\\u003c= 0.02 - 2: Average emissivity error \\\u003c= 0.04 - 3: Average emissivity error \\\u003e 0.04 - Bits 6-7: LST error flag - 0: Average LST error \\\u003c= 1K - 1: Average LST error \\\u003c= 2K - 2: Average LST error \\\u003c= 3K - 3: Average LST error \\\u003e 3K ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `Night_view_time` | h | 0 | 240 | 0.1 | | meters | Local time of night observation |\n| `Night_view_angle` | deg | 0 | 130 | | -65 | meters | View zenith angle of night observation |\n| `Emis_31` | | 1 | 255 | 0.002 | 0.49 | meters | Band 31 emissivity |\n| `Emis_32` | | 1 | 255 | 0.002 | 0.49 | meters | Band 32 emissivity |\n| `Clear_day_cov` | | 1 | 65535 | 0.0005 | | meters | Day clear-sky coverage |\n| `Clear_night_cov` | | 1 | 65535 | 0.0005 | | meters | Night clear-sky coverage |\n\n### Terms of Use\n\n**Terms of Use**\n\nMODIS data and products acquired through the LP DAAC\nhave no restrictions on subsequent use, sale, or redistribution.\n\n### Citations\n\nCitations:\n\n- Please visit [LP DAAC 'Citing Our Data' page](https://lpdaac.usgs.gov/citing_our_data)\n for information on citing LP DAAC datasets.\n\n### DOIs\n\n- \u003chttps://doi.org/10.5067/MODIS/MYD11A1.061\u003e\n\n### Explore with Earth Engine\n\n| **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.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('MODIS/061/MYD11A1')\n .filter(ee.Filter.date('2018-01-01', '2018-05-01'));\nvar landSurfaceTemperature = dataset.select('LST_Day_1km');\nvar landSurfaceTemperatureVis = {\n min: 13000.0,\n max: 16500.0,\n palette: [\n '040274', '040281', '0502a3', '0502b8', '0502ce', '0502e6',\n '0602ff', '235cb1', '307ef3', '269db1', '30c8e2', '32d3ef',\n '3be285', '3ff38f', '86e26f', '3ae237', 'b5e22e', 'd6e21f',\n 'fff705', 'ffd611', 'ffb613', 'ff8b13', 'ff6e08', 'ff500d',\n 'ff0000', 'de0101', 'c21301', 'a71001', '911003'\n ],\n};\nMap.setCenter(6.746, 46.529, 2);\nMap.addLayer(\n landSurfaceTemperature, landSurfaceTemperatureVis,\n 'Land Surface Temperature');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/MODIS/MODIS_061_MYD11A1) \n[MYD11A1.061 Aqua Land Surface Temperature and Emissivity Daily Global 1km](/earth-engine/datasets/catalog/MODIS_061_MYD11A1) \nThe MYD11A1 V6.1 product provides daily land surface temperature (LST) and emissivity values in a 1200 x 1200 kilometer grid. The temperature value is derived from the MYD11_L2 swath product. Above 30 degrees latitude, some pixels may have multiple observations where the criteria for clear-sky are met. When this occurs, ... \nMODIS/061/MYD11A1, aqua,climate,daily,emissivity,global,lst,modis,nasa,surface-temperature,usgs \n2002-07-04T00:00:00Z/2025-08-17T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/MODIS/MYD11A1.061](https://doi.org/https://doi.org/10.5067/MODIS/MOD11A1.061)\n- [https://doi.org/10.5067/MODIS/MYD11A1.061](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MYD11A1)"]]
