For the measurement/estimation of which of the following are satellite images/remote sensing data used? 1. Chlorophyll content in the vegetation of a specific location 2. Greenhouse gas emissions from rice paddies of a specific location 3. Land surface temperatures of a specific location Select the correct answer using the code given below.

1. Satellite images and remote sensing data are widely used for various environmental monitoring tasks. 2. Statement 1 is correct: Chlorophyll content in vegetation strongly influences its reflectance properties, particularly in the red and near-infrared parts of the spectrum. Remote sensing instruments on satellites capture this spectral information, allowing for the estimation of chlorophyll content and overall vegetation health (e.g., using indices like NDVI). 3. Statement 2 is correct: While direct measurement of Greenhouse gas emissions (like methane) from specific rice paddies using satellites is challenging, satellite data is used in the estimation process. Satellites can map the extent, water logging status, and growth stages of rice paddies, which are crucial inputs for models that estimate methane emissions. Some satellites also monitor atmospheric methane concentrations, contributing to larger-scale estimation. 4. Statement 3 is correct: Satellites equipped with thermal infrared sensors can directly measure the thermal radiation emitted from the Earth's surface. This data is routinely processed to estimate Land surface temperatures (LST) across large areas. 5. Therefore, satellite images/remote sensing data are used for the measurement/estimation of all three parameters.