## 4 Conclusions  
The analysis of the temporal variability of daily temperature, precipitation, and CO\({}_{2}\) flux anomalies, as well as their relationships, highlighted the large diversity of CO\({}_{2}\) flux responses to the fluctuations of temperature and precipitation in tropical ecosystems. The heavy precipitation mainly led to a strong intensification of CO\({}_{2}\) release into the atmosphere due to increased soil moisture and intensified microbial activity, enhanced the decomposition and mineralization of soil organic matter (\"Birch effect\"), and increased autotrophic plant respiration. These types of relationships have been observed at almost all stations in all types of study biomes. Within a few days after heavy rainfall, CO\({}_{2}\) emission gradually declined with time after rewetting, and the ecosystems began to serve as a CO\({}_{2}\) sink from the atmosphere, mainly due to the intensification of plant photosynthesis under optimal soil moisture conditions. The precipitation deficit contributed to the negative anomalies (higher uptake) of CO\({}_{2}\) fluxes (with, however, almost half weaker relationship than for heavy precipitation) due to reduced ER and high GPP rates under sufficient soil moisture supply. The influence of temperature fluctuations on CO\({}_{2}\) fluxes was more pronounced during the dryer period, associated with a lack of precipitation. In evergreen forests, seasonal or dry forests, wetlands, and some savannas, the low temperatures coincided with higher CO\({}_{2}\) emissions. During the rainy season, the temperature effect was closely related to changes in precipitation: the abundant precipitation was accompanied by a strong cloudiness and, therefore, a lower temperature. At the same time, extreme precipitations implied an increase in CO\({}_{2}\) emissions. In some savannas, Australian evergreen forests, and seasonal or dry forests, high temperatures contributed to higher CO\({}_{2}\) emissions, whereas low temperatures assisted in higher CO\({}_{2}\) uptake. Higher temperatures usually led to higher ER rates if there was a lack of the limiting influence of other external factors such as soil moisture availability. This type of relationship was likely typical of the dry season, when the influence of precipitation was negligible. The extreme high temperatures stressed the photosynthesis, reduced GPP rate, and led to a higher release of CO\({}_{2}\) into the atmosphere. A comparison of the relationship between daily CO\({}_{2}\) flux, precipitation, and temperature anomalies showed that the sensitivity of CO\({}_{2}\) fluxes to precipitation anomalies was stronger than that of the temperature change. This may have been explained by relatively small temperature fluctuations in the tropics in comparison with the precipitation. In the geographical regions with strong seasonal variations in precipitation conditions, the stronger dependence of CO\({}_{2}\) fluxes on precipitation than on temperature may have been due to the overall soil moisture deficiencies in these ecosystems during dry periods. The strongest combined effect of temperature and precipitation on the daily CO\({}_{2}\) fluxes was detected under cold/wet weather conditions, resulting in higher CO\({}_{2}\) emissions almost in all considered tropical ecosystems. It may be interpreted as the effect of reduced GPP due to low temperature and reduced incoming solar radiation, as well as more intensive soil respiration due to abundant precipitation. The opposite weather conditions (hot/dry) were mostly associated with increased CO\({}_{2}\) uptake. That was also not an evident result, as a lack of precipitation and extremely hot temperatures often led to the suppression of GPP and positive CO\({}_{2}\) flux anomalies. In the tropical forests, however, the prevailing sufficient soil moisture conditions made precipitation not a limiting factor for GPP, whereas high temperatures associated with high solar radiation may cause the intensification of photosynthesis.